solana/clap-v3-utils/src/keypair.rs

1470 lines
52 KiB
Rust

//! Loading signers and keypairs from the command line.
//!
//! This module contains utilities for loading [Signer]s and [Keypair]s from
//! standard signing sources, from the command line, as in the Solana CLI.
//!
//! The key function here is [`signer_from_path`], which loads a `Signer` from
//! one of several possible sources by interpreting a "path" command line
//! argument. Its documentation includes a description of all possible signing
//! sources supported by the Solana CLI. Many other functions here are
//! variations on, or delegate to, `signer_from_path`.
use {
crate::{
input_parsers::{pubkeys_sigs_of, STDOUT_OUTFILE_TOKEN},
offline::{SIGNER_ARG, SIGN_ONLY_ARG},
ArgConstant,
},
bip39::{Language, Mnemonic, Seed},
clap::ArgMatches,
rpassword::prompt_password,
solana_remote_wallet::{
locator::{Locator as RemoteWalletLocator, LocatorError as RemoteWalletLocatorError},
remote_keypair::generate_remote_keypair,
remote_wallet::{maybe_wallet_manager, RemoteWalletError, RemoteWalletManager},
},
solana_sdk::{
derivation_path::{DerivationPath, DerivationPathError},
hash::Hash,
message::Message,
pubkey::Pubkey,
signature::{
generate_seed_from_seed_phrase_and_passphrase, read_keypair, read_keypair_file,
EncodableKey, EncodableKeypair, Keypair, NullSigner, Presigner, SeedDerivable,
Signature, Signer,
},
},
solana_zk_token_sdk::encryption::{auth_encryption::AeKey, elgamal::ElGamalKeypair},
std::{
cell::RefCell,
convert::TryFrom,
error,
io::{stdin, stdout, Write},
ops::Deref,
process::exit,
str::FromStr,
sync::Arc,
},
thiserror::Error,
};
pub struct SignOnly {
pub blockhash: Hash,
pub message: Option<String>,
pub present_signers: Vec<(Pubkey, Signature)>,
pub absent_signers: Vec<Pubkey>,
pub bad_signers: Vec<Pubkey>,
}
impl SignOnly {
pub fn has_all_signers(&self) -> bool {
self.absent_signers.is_empty() && self.bad_signers.is_empty()
}
pub fn presigner_of(&self, pubkey: &Pubkey) -> Option<Presigner> {
presigner_from_pubkey_sigs(pubkey, &self.present_signers)
}
}
pub type CliSigners = Vec<Box<dyn Signer>>;
pub type SignerIndex = usize;
pub struct CliSignerInfo {
pub signers: CliSigners,
}
impl CliSignerInfo {
pub fn index_of(&self, pubkey: Option<Pubkey>) -> Option<usize> {
if let Some(pubkey) = pubkey {
self.signers
.iter()
.position(|signer| signer.pubkey() == pubkey)
} else {
Some(0)
}
}
pub fn index_of_or_none(&self, pubkey: Option<Pubkey>) -> Option<usize> {
if let Some(pubkey) = pubkey {
self.signers
.iter()
.position(|signer| signer.pubkey() == pubkey)
} else {
None
}
}
pub fn signers_for_message(&self, message: &Message) -> Vec<&dyn Signer> {
self.signers
.iter()
.filter_map(|k| {
if message.signer_keys().contains(&&k.pubkey()) {
Some(k.as_ref())
} else {
None
}
})
.collect()
}
}
/// A command line argument that loads a default signer in absence of other signers.
///
/// This type manages a default signing source which may be overridden by other
/// signing sources via its [`generate_unique_signers`] method.
///
/// [`generate_unique_signers`]: DefaultSigner::generate_unique_signers
///
/// `path` is a signing source as documented by [`signer_from_path`], and
/// `arg_name` is the name of its [clap] command line argument, which is passed
/// to `signer_from_path` as its `keypair_name` argument.
#[derive(Debug, Default)]
pub struct DefaultSigner {
/// The name of the signers command line argument.
pub arg_name: String,
/// The signing source.
pub path: String,
is_path_checked: RefCell<bool>,
}
impl DefaultSigner {
/// Create a new `DefaultSigner`.
///
/// `path` is a signing source as documented by [`signer_from_path`], and
/// `arg_name` is the name of its [clap] command line argument, which is
/// passed to `signer_from_path` as its `keypair_name` argument.
///
/// [clap]: https://docs.rs/clap
///
/// # Examples
///
/// ```no_run
/// use clap::{Arg, Command};
/// use solana_clap_v3_utils::keypair::DefaultSigner;
/// use solana_clap_v3_utils::offline::OfflineArgs;
///
/// let clap_app = Command::new("my-program")
/// // The argument we'll parse as a signer "path"
/// .arg(Arg::new("keypair")
/// .required(true)
/// .help("The default signer"))
/// .offline_args();
///
/// let clap_matches = clap_app.get_matches();
/// let keypair_str: String = clap_matches.value_of_t_or_exit("keypair");
///
/// let default_signer = DefaultSigner::new("keypair", &keypair_str);
/// # assert!(default_signer.arg_name.len() > 0);
/// assert_eq!(default_signer.path, keypair_str);
/// # Ok::<(), Box<dyn std::error::Error>>(())
/// ```
pub fn new<AN: AsRef<str>, P: AsRef<str>>(arg_name: AN, path: P) -> Self {
let arg_name = arg_name.as_ref().to_string();
let path = path.as_ref().to_string();
Self {
arg_name,
path,
..Self::default()
}
}
fn path(&self) -> Result<&str, Box<dyn std::error::Error>> {
if !self.is_path_checked.borrow().deref() {
parse_signer_source(&self.path)
.and_then(|s| {
if let SignerSourceKind::Filepath(path) = &s.kind {
std::fs::metadata(path).map(|_| ()).map_err(|e| e.into())
} else {
Ok(())
}
})
.map_err(|_| {
std::io::Error::new(
std::io::ErrorKind::Other,
format!(
"No default signer found, run \"solana-keygen new -o {}\" to create a new one",
self.path
),
)
})?;
*self.is_path_checked.borrow_mut() = true;
}
Ok(&self.path)
}
/// Generate a unique set of signers, possibly excluding this default signer.
///
/// This function allows a command line application to have a default
/// signer, perhaps representing a default wallet, but to override that
/// signer and instead sign with one or more other signers.
///
/// `bulk_signers` is a vector of signers, all of which are optional. If any
/// of those signers is `None`, then the default signer will be loaded; if
/// all of those signers are `Some`, then the default signer will not be
/// loaded.
///
/// The returned value includes all of the `bulk_signers` that were not
/// `None`, and maybe the default signer, if it was loaded.
///
/// # Examples
///
/// ```no_run
/// use clap::{Arg, Command};
/// use solana_clap_v3_utils::keypair::{DefaultSigner, signer_from_path};
/// use solana_clap_v3_utils::offline::OfflineArgs;
/// use solana_sdk::signer::Signer;
///
/// let clap_app = Command::new("my-program")
/// // The argument we'll parse as a signer "path"
/// .arg(Arg::new("keypair")
/// .required(true)
/// .help("The default signer"))
/// .arg(Arg::new("payer")
/// .long("payer")
/// .help("The account paying for the transaction"))
/// .offline_args();
///
/// let mut wallet_manager = None;
///
/// let clap_matches = clap_app.get_matches();
/// let keypair_str: String = clap_matches.value_of_t_or_exit("keypair");
/// let maybe_payer = clap_matches.value_of("payer");
///
/// let default_signer = DefaultSigner::new("keypair", &keypair_str);
/// let maybe_payer_signer = maybe_payer.map(|payer| {
/// signer_from_path(&clap_matches, payer, "payer", &mut wallet_manager)
/// }).transpose()?;
/// let bulk_signers = vec![maybe_payer_signer];
///
/// let unique_signers = default_signer.generate_unique_signers(
/// bulk_signers,
/// &clap_matches,
/// &mut wallet_manager,
/// )?;
/// # Ok::<(), Box<dyn std::error::Error>>(())
/// ```
pub fn generate_unique_signers(
&self,
bulk_signers: Vec<Option<Box<dyn Signer>>>,
matches: &ArgMatches,
wallet_manager: &mut Option<Arc<RemoteWalletManager>>,
) -> Result<CliSignerInfo, Box<dyn error::Error>> {
let mut unique_signers = vec![];
// Determine if the default signer is needed
if bulk_signers.iter().any(|signer| signer.is_none()) {
let default_signer = self.signer_from_path(matches, wallet_manager)?;
unique_signers.push(default_signer);
}
for signer in bulk_signers.into_iter().flatten() {
if !unique_signers.iter().any(|s| s == &signer) {
unique_signers.push(signer);
}
}
Ok(CliSignerInfo {
signers: unique_signers,
})
}
/// Loads the default [Signer] from one of several possible sources.
///
/// The `path` is not strictly a file system path, but is interpreted as
/// various types of _signing source_, depending on its format, one of which
/// is a path to a keypair file. Some sources may require user interaction
/// in the course of calling this function.
///
/// This simply delegates to the [`signer_from_path`] free function, passing
/// it the `DefaultSigner`s `path` and `arg_name` fields as the `path` and
/// `keypair_name` arguments.
///
/// See the [`signer_from_path`] free function for full documentation of how
/// this function interprets its arguments.
///
/// # Examples
///
/// ```no_run
/// use clap::{Arg, Command};
/// use solana_clap_v3_utils::keypair::DefaultSigner;
/// use solana_clap_v3_utils::offline::OfflineArgs;
///
/// let clap_app = Command::new("my-program")
/// // The argument we'll parse as a signer "path"
/// .arg(Arg::new("keypair")
/// .required(true)
/// .help("The default signer"))
/// .offline_args();
///
/// let clap_matches = clap_app.get_matches();
/// let keypair_str: String = clap_matches.value_of_t_or_exit("keypair");
/// let default_signer = DefaultSigner::new("keypair", &keypair_str);
/// let mut wallet_manager = None;
///
/// let signer = default_signer.signer_from_path(
/// &clap_matches,
/// &mut wallet_manager,
/// )?;
/// # Ok::<(), Box<dyn std::error::Error>>(())
/// ```
pub fn signer_from_path(
&self,
matches: &ArgMatches,
wallet_manager: &mut Option<Arc<RemoteWalletManager>>,
) -> Result<Box<dyn Signer>, Box<dyn std::error::Error>> {
signer_from_path(matches, self.path()?, &self.arg_name, wallet_manager)
}
/// Loads the default [Signer] from one of several possible sources.
///
/// The `path` is not strictly a file system path, but is interpreted as
/// various types of _signing source_, depending on its format, one of which
/// is a path to a keypair file. Some sources may require user interaction
/// in the course of calling this function.
///
/// This simply delegates to the [`signer_from_path_with_config`] free
/// function, passing it the `DefaultSigner`s `path` and `arg_name` fields
/// as the `path` and `keypair_name` arguments.
///
/// See the [`signer_from_path`] free function for full documentation of how
/// this function interprets its arguments.
///
/// # Examples
///
/// ```no_run
/// use clap::{Arg, Command};
/// use solana_clap_v3_utils::keypair::{SignerFromPathConfig, DefaultSigner};
/// use solana_clap_v3_utils::offline::OfflineArgs;
///
/// let clap_app = Command::new("my-program")
/// // The argument we'll parse as a signer "path"
/// .arg(Arg::new("keypair")
/// .required(true)
/// .help("The default signer"))
/// .offline_args();
///
/// let clap_matches = clap_app.get_matches();
/// let keypair_str: String = clap_matches.value_of_t_or_exit("keypair");
/// let default_signer = DefaultSigner::new("keypair", &keypair_str);
/// let mut wallet_manager = None;
///
/// // Allow pubkey signers without accompanying signatures
/// let config = SignerFromPathConfig {
/// allow_null_signer: true,
/// };
///
/// let signer = default_signer.signer_from_path_with_config(
/// &clap_matches,
/// &mut wallet_manager,
/// &config,
/// )?;
/// # Ok::<(), Box<dyn std::error::Error>>(())
/// ```
pub fn signer_from_path_with_config(
&self,
matches: &ArgMatches,
wallet_manager: &mut Option<Arc<RemoteWalletManager>>,
config: &SignerFromPathConfig,
) -> Result<Box<dyn Signer>, Box<dyn std::error::Error>> {
signer_from_path_with_config(
matches,
self.path()?,
&self.arg_name,
wallet_manager,
config,
)
}
}
pub(crate) struct SignerSource {
pub kind: SignerSourceKind,
pub derivation_path: Option<DerivationPath>,
pub legacy: bool,
}
impl SignerSource {
fn new(kind: SignerSourceKind) -> Self {
Self {
kind,
derivation_path: None,
legacy: false,
}
}
fn new_legacy(kind: SignerSourceKind) -> Self {
Self {
kind,
derivation_path: None,
legacy: true,
}
}
}
const SIGNER_SOURCE_PROMPT: &str = "prompt";
const SIGNER_SOURCE_FILEPATH: &str = "file";
const SIGNER_SOURCE_USB: &str = "usb";
const SIGNER_SOURCE_STDIN: &str = "stdin";
const SIGNER_SOURCE_PUBKEY: &str = "pubkey";
pub(crate) enum SignerSourceKind {
Prompt,
Filepath(String),
Usb(RemoteWalletLocator),
Stdin,
Pubkey(Pubkey),
}
impl AsRef<str> for SignerSourceKind {
fn as_ref(&self) -> &str {
match self {
Self::Prompt => SIGNER_SOURCE_PROMPT,
Self::Filepath(_) => SIGNER_SOURCE_FILEPATH,
Self::Usb(_) => SIGNER_SOURCE_USB,
Self::Stdin => SIGNER_SOURCE_STDIN,
Self::Pubkey(_) => SIGNER_SOURCE_PUBKEY,
}
}
}
impl std::fmt::Debug for SignerSourceKind {
fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
let s: &str = self.as_ref();
write!(f, "{s}")
}
}
#[derive(Debug, Error)]
pub(crate) enum SignerSourceError {
#[error("unrecognized signer source")]
UnrecognizedSource,
#[error(transparent)]
RemoteWalletLocatorError(#[from] RemoteWalletLocatorError),
#[error(transparent)]
DerivationPathError(#[from] DerivationPathError),
#[error(transparent)]
IoError(#[from] std::io::Error),
}
pub(crate) fn parse_signer_source<S: AsRef<str>>(
source: S,
) -> Result<SignerSource, SignerSourceError> {
let source = source.as_ref();
let source = {
#[cfg(target_family = "windows")]
{
// trim matched single-quotes since cmd.exe won't
let mut source = source;
while let Some(trimmed) = source.strip_prefix('\'') {
source = if let Some(trimmed) = trimmed.strip_suffix('\'') {
trimmed
} else {
break;
}
}
source.replace('\\', "/")
}
#[cfg(not(target_family = "windows"))]
{
source.to_string()
}
};
match uriparse::URIReference::try_from(source.as_str()) {
Err(_) => Err(SignerSourceError::UnrecognizedSource),
Ok(uri) => {
if let Some(scheme) = uri.scheme() {
let scheme = scheme.as_str().to_ascii_lowercase();
match scheme.as_str() {
SIGNER_SOURCE_PROMPT => Ok(SignerSource {
kind: SignerSourceKind::Prompt,
derivation_path: DerivationPath::from_uri_any_query(&uri)?,
legacy: false,
}),
SIGNER_SOURCE_FILEPATH => Ok(SignerSource::new(SignerSourceKind::Filepath(
uri.path().to_string(),
))),
SIGNER_SOURCE_USB => Ok(SignerSource {
kind: SignerSourceKind::Usb(RemoteWalletLocator::new_from_uri(&uri)?),
derivation_path: DerivationPath::from_uri_key_query(&uri)?,
legacy: false,
}),
SIGNER_SOURCE_STDIN => Ok(SignerSource::new(SignerSourceKind::Stdin)),
_ => {
#[cfg(target_family = "windows")]
// On Windows, an absolute path's drive letter will be parsed as the URI
// scheme. Assume a filepath source in case of a single character shceme.
if scheme.len() == 1 {
return Ok(SignerSource::new(SignerSourceKind::Filepath(source)));
}
Err(SignerSourceError::UnrecognizedSource)
}
}
} else {
match source.as_str() {
STDOUT_OUTFILE_TOKEN => Ok(SignerSource::new(SignerSourceKind::Stdin)),
ASK_KEYWORD => Ok(SignerSource::new_legacy(SignerSourceKind::Prompt)),
_ => match Pubkey::from_str(source.as_str()) {
Ok(pubkey) => Ok(SignerSource::new(SignerSourceKind::Pubkey(pubkey))),
Err(_) => std::fs::metadata(source.as_str())
.map(|_| SignerSource::new(SignerSourceKind::Filepath(source)))
.map_err(|err| err.into()),
},
}
}
}
}
}
pub fn presigner_from_pubkey_sigs(
pubkey: &Pubkey,
signers: &[(Pubkey, Signature)],
) -> Option<Presigner> {
signers.iter().find_map(|(signer, sig)| {
if *signer == *pubkey {
Some(Presigner::new(signer, sig))
} else {
None
}
})
}
#[derive(Debug, Default)]
pub struct SignerFromPathConfig {
pub allow_null_signer: bool,
}
/// Loads a [Signer] from one of several possible sources.
///
/// The `path` is not strictly a file system path, but is interpreted as various
/// types of _signing source_, depending on its format, one of which is a path
/// to a keypair file. Some sources may require user interaction in the course
/// of calling this function.
///
/// The result of this function is a boxed object of the [Signer] trait. To load
/// a concrete [Keypair], use the [keypair_from_path] function, though note that
/// it does not support all signer sources.
///
/// The `matches` argument is the same set of parsed [clap] matches from which
/// `path` was parsed. It is used to parse various additional command line
/// arguments, depending on which signing source is requested, as described
/// below in "Signing sources".
///
/// [clap]: https//docs.rs/clap
///
/// The `keypair_name` argument is the "name" of the signer, and is typically
/// the name of the clap argument from which the `path` argument was parsed,
/// like "keypair", "from", or "fee-payer". It is used solely for interactively
/// prompting the user, either when entering seed phrases or selecting from
/// multiple hardware wallets.
///
/// The `wallet_manager` is used for establishing connections to a hardware
/// device such as Ledger. If `wallet_manager` is a reference to `None`, and a
/// hardware signer is requested, then this function will attempt to create a
/// wallet manager, assigning it to the mutable `wallet_manager` reference. This
/// argument is typically a reference to `None`.
///
/// # Signing sources
///
/// The `path` argument can simply be a path to a keypair file, but it may also
/// be interpreted in several other ways, in the following order.
///
/// Firstly, the `path` argument may be interpreted as a [URI], with the URI
/// scheme indicating where to load the signer from. If it parses as a URI, then
/// the following schemes are supported:
///
/// - `file:` &mdash; Read the keypair from a JSON keypair file. The path portion
/// of the URI is the file path.
///
/// - `stdin:` &mdash; Read the keypair from stdin, in the JSON format used by
/// the keypair file.
///
/// Non-scheme parts of the URI are ignored.
///
/// - `prompt:` &mdash; The user will be prompted at the command line
/// for their seed phrase and passphrase.
///
/// In this URI the [query string][qs] may contain zero or one of the
/// following key/value pairs that determine the [BIP44 derivation path][dp]
/// of the private key from the seed:
///
/// - `key` &mdash; In this case the value is either one or two numerical
/// indexes separated by a slash, which represent the "account", and
/// "change" components of the BIP44 derivation path. Example: `key=0/0`.
///
/// - `full-path` &mdash; In this case the value is a full derivation path,
/// and the user is responsible for ensuring it is correct. Example:
/// `full-path=m/44/501/0/0/0`.
///
/// If neither is provided, then the default derivation path is used.
///
/// Note that when specifying derivation paths, this routine will convert all
/// indexes into ["hardened"] indexes, even if written as "normal" indexes.
///
/// Other components of the URI besides the scheme and query string are ignored.
///
/// If the "skip_seed_phrase_validation" argument, as defined in
/// [SKIP_SEED_PHRASE_VALIDATION_ARG] is found in `matches`, then the keypair
/// seed will be generated directly from the seed phrase, without parsing or
/// validating it as a BIP39 seed phrase. This allows the use of non-BIP39 seed
/// phrases.
///
/// - `usb:` &mdash; Use a USB hardware device as the signer. In this case, the
/// URI host indicates the device type, and is required. The only currently valid host
/// value is "ledger".
///
/// Optionally, the first segment of the URI path indicates the base-58
/// encoded pubkey of the wallet, and the "account" and "change" indices of
/// the derivation path can be specified with the `key=` query parameter, as
/// with the `prompt:` URI.
///
/// Examples:
///
/// - `usb://ledger`
/// - `usb://ledger?key=0/0`
/// - `usb://ledger/9rPVSygg3brqghvdZ6wsL2i5YNQTGhXGdJzF65YxaCQd`
/// - `usb://ledger/9rPVSygg3brqghvdZ6wsL2i5YNQTGhXGdJzF65YxaCQd?key=0/0`
///
/// Next the `path` argument may be one of the following strings:
///
/// - `-` &mdash; Read the keypair from stdin. This is the same as the `stdin:`
/// URI scheme.
///
/// - `ASK` &mdash; The user will be prompted at the command line for their seed
/// phrase and passphrase. _This uses a legacy key derivation method and should
/// usually be avoided in favor of `prompt:`._
///
/// Next, if the `path` argument parses as a base-58 public key, then the signer
/// is created without a private key, but with presigned signatures, each parsed
/// from the additional command line arguments, provided by the `matches`
/// argument.
///
/// In this case, the remaining command line arguments are searched for clap
/// arguments named "signer", as defined by [SIGNER_ARG], and each is parsed as
/// a key-value pair of the form "pubkey=signature", where `pubkey` is the same
/// base-58 public key, and `signature` is a serialized signature produced by
/// the corresponding keypair. One of the "signer" signatures must be for the
/// pubkey specified in `path` or this function will return an error; unless the
/// "sign_only" clap argument, as defined by [SIGN_ONLY_ARG], is present in
/// `matches`, in which case the signer will be created with no associated
/// signatures.
///
/// Finally, if `path`, interpreted as a file path, represents a file on disk,
/// then the signer is created by reading that file as a JSON-serialized
/// keypair. This is the same as the `file:` URI scheme.
///
/// [qs]: https://en.wikipedia.org/wiki/Query_string
/// [dp]: https://github.com/bitcoin/bips/blob/master/bip-0044.mediawiki
/// [URI]: https://en.wikipedia.org/wiki/Uniform_Resource_Identifier
/// ["hardened"]: https://wiki.trezor.io/Hardened_and_non-hardened_derivation
///
/// # Examples
///
/// This shows a reasonable way to set up clap to parse all possible signer
/// sources. Note the use of the [`OfflineArgs::offline_args`] method to add
/// correct clap definitions of the `--signer` and `--sign-only` arguments, as
/// required by the base-58 pubkey offline signing method.
///
/// [`OfflineArgs::offline_args`]: crate::offline::OfflineArgs::offline_args
///
/// ```no_run
/// use clap::{Arg, Command};
/// use solana_clap_v3_utils::keypair::signer_from_path;
/// use solana_clap_v3_utils::offline::OfflineArgs;
///
/// let clap_app = Command::new("my-program")
/// // The argument we'll parse as a signer "path"
/// .arg(Arg::new("keypair")
/// .required(true)
/// .help("The default signer"))
/// .offline_args();
///
/// let clap_matches = clap_app.get_matches();
/// let keypair_str: String = clap_matches.value_of_t_or_exit("keypair");
/// let mut wallet_manager = None;
/// let signer = signer_from_path(
/// &clap_matches,
/// &keypair_str,
/// "keypair",
/// &mut wallet_manager,
/// )?;
/// # Ok::<(), Box<dyn std::error::Error>>(())
/// ```
pub fn signer_from_path(
matches: &ArgMatches,
path: &str,
keypair_name: &str,
wallet_manager: &mut Option<Arc<RemoteWalletManager>>,
) -> Result<Box<dyn Signer>, Box<dyn error::Error>> {
let config = SignerFromPathConfig::default();
signer_from_path_with_config(matches, path, keypair_name, wallet_manager, &config)
}
/// Loads a [Signer] from one of several possible sources.
///
/// The `path` is not strictly a file system path, but is interpreted as various
/// types of _signing source_, depending on its format, one of which is a path
/// to a keypair file. Some sources may require user interaction in the course
/// of calling this function.
///
/// This is the same as [`signer_from_path`] except that it additionaolly
/// accepts a [`SignerFromPathConfig`] argument.
///
/// If the `allow_null_signer` field of `config` is `true`, then pubkey signers
/// are allowed to have zero associated signatures via additional "signer"
/// command line arguments. It the same effect as if the "sign_only" clap
/// argument is present.
///
/// See [`signer_from_path`] for full documentation of how this function
/// interprets its arguments.
///
/// # Examples
///
/// This shows a reasonable way to set up clap to parse all possible signer
/// sources. Note the use of the [`OfflineArgs::offline_args`] method to add
/// correct clap definitions of the `--signer` and `--sign-only` arguments, as
/// required by the base-58 pubkey offline signing method.
///
/// [`OfflineArgs::offline_args`]: crate::offline::OfflineArgs::offline_args
///
/// ```no_run
/// use clap::{Arg, Command};
/// use solana_clap_v3_utils::keypair::{signer_from_path_with_config, SignerFromPathConfig};
/// use solana_clap_v3_utils::offline::OfflineArgs;
///
/// let clap_app = Command::new("my-program")
/// // The argument we'll parse as a signer "path"
/// .arg(Arg::new("keypair")
/// .required(true)
/// .help("The default signer"))
/// .offline_args();
///
/// let clap_matches = clap_app.get_matches();
/// let keypair_str: String = clap_matches.value_of_t_or_exit("keypair");
/// let mut wallet_manager = None;
///
/// // Allow pubkey signers without accompanying signatures
/// let config = SignerFromPathConfig {
/// allow_null_signer: true,
/// };
///
/// let signer = signer_from_path_with_config(
/// &clap_matches,
/// &keypair_str,
/// "keypair",
/// &mut wallet_manager,
/// &config,
/// )?;
/// # Ok::<(), Box<dyn std::error::Error>>(())
/// ```
pub fn signer_from_path_with_config(
matches: &ArgMatches,
path: &str,
keypair_name: &str,
wallet_manager: &mut Option<Arc<RemoteWalletManager>>,
config: &SignerFromPathConfig,
) -> Result<Box<dyn Signer>, Box<dyn error::Error>> {
let SignerSource {
kind,
derivation_path,
legacy,
} = parse_signer_source(path)?;
match kind {
SignerSourceKind::Prompt => {
let skip_validation = matches.is_present(SKIP_SEED_PHRASE_VALIDATION_ARG.name);
Ok(Box::new(keypair_from_seed_phrase(
keypair_name,
skip_validation,
false,
derivation_path,
legacy,
)?))
}
SignerSourceKind::Filepath(path) => match read_keypair_file(&path) {
Err(e) => Err(std::io::Error::new(
std::io::ErrorKind::Other,
format!("could not read keypair file \"{path}\". Run \"solana-keygen new\" to create a keypair file: {e}"),
)
.into()),
Ok(file) => Ok(Box::new(file)),
},
SignerSourceKind::Stdin => {
let mut stdin = std::io::stdin();
Ok(Box::new(read_keypair(&mut stdin)?))
}
SignerSourceKind::Usb(locator) => {
if wallet_manager.is_none() {
*wallet_manager = maybe_wallet_manager()?;
}
if let Some(wallet_manager) = wallet_manager {
let confirm_key = matches.try_contains_id("confirm_key").unwrap_or(false);
Ok(Box::new(generate_remote_keypair(
locator,
derivation_path.unwrap_or_default(),
wallet_manager,
confirm_key,
keypair_name,
)?))
} else {
Err(RemoteWalletError::NoDeviceFound.into())
}
}
SignerSourceKind::Pubkey(pubkey) => {
let presigner = pubkeys_sigs_of(matches, SIGNER_ARG.name)
.as_ref()
.and_then(|presigners| presigner_from_pubkey_sigs(&pubkey, presigners));
if let Some(presigner) = presigner {
Ok(Box::new(presigner))
} else if config.allow_null_signer || matches.is_present(SIGN_ONLY_ARG.name) {
Ok(Box::new(NullSigner::new(&pubkey)))
} else {
Err(std::io::Error::new(
std::io::ErrorKind::Other,
format!("missing signature for supplied pubkey: {pubkey}"),
)
.into())
}
}
}
}
/// Loads the pubkey of a [Signer] from one of several possible sources.
///
/// The `path` is not strictly a file system path, but is interpreted as various
/// types of _signing source_, depending on its format, one of which is a path
/// to a keypair file. Some sources may require user interaction in the course
/// of calling this function.
///
/// The only difference between this function and [`signer_from_path`] is in the
/// case of a "pubkey" path: this function does not require that accompanying
/// command line arguments contain an offline signature.
///
/// See [`signer_from_path`] for full documentation of how this function
/// interprets its arguments.
///
/// # Examples
///
/// ```no_run
/// use clap::{Arg, Command};
/// use solana_clap_v3_utils::keypair::pubkey_from_path;
///
/// let clap_app = Command::new("my-program")
/// // The argument we'll parse as a signer "path"
/// .arg(Arg::new("keypair")
/// .required(true)
/// .help("The default signer"));
///
/// let clap_matches = clap_app.get_matches();
/// let keypair_str: String = clap_matches.value_of_t_or_exit("keypair");
/// let mut wallet_manager = None;
/// let pubkey = pubkey_from_path(
/// &clap_matches,
/// &keypair_str,
/// "keypair",
/// &mut wallet_manager,
/// )?;
/// # Ok::<(), Box<dyn std::error::Error>>(())
/// ```
pub fn pubkey_from_path(
matches: &ArgMatches,
path: &str,
keypair_name: &str,
wallet_manager: &mut Option<Arc<RemoteWalletManager>>,
) -> Result<Pubkey, Box<dyn error::Error>> {
let SignerSource { kind, .. } = parse_signer_source(path)?;
match kind {
SignerSourceKind::Pubkey(pubkey) => Ok(pubkey),
_ => Ok(signer_from_path(matches, path, keypair_name, wallet_manager)?.pubkey()),
}
}
pub fn resolve_signer_from_path(
matches: &ArgMatches,
path: &str,
keypair_name: &str,
wallet_manager: &mut Option<Arc<RemoteWalletManager>>,
) -> Result<Option<String>, Box<dyn error::Error>> {
let SignerSource {
kind,
derivation_path,
legacy,
} = parse_signer_source(path)?;
match kind {
SignerSourceKind::Prompt => {
let skip_validation = matches.is_present(SKIP_SEED_PHRASE_VALIDATION_ARG.name);
// This method validates the seed phrase, but returns `None` because there is no path
// on disk or to a device
keypair_from_seed_phrase(
keypair_name,
skip_validation,
false,
derivation_path,
legacy,
)
.map(|_| None)
}
SignerSourceKind::Filepath(path) => match read_keypair_file(&path) {
Err(e) => Err(std::io::Error::new(
std::io::ErrorKind::Other,
format!(
"could not read keypair file \"{path}\". \
Run \"solana-keygen new\" to create a keypair file: {e}"
),
)
.into()),
Ok(_) => Ok(Some(path.to_string())),
},
SignerSourceKind::Stdin => {
let mut stdin = std::io::stdin();
// This method validates the keypair from stdin, but returns `None` because there is no
// path on disk or to a device
read_keypair(&mut stdin).map(|_| None)
}
SignerSourceKind::Usb(locator) => {
if wallet_manager.is_none() {
*wallet_manager = maybe_wallet_manager()?;
}
if let Some(wallet_manager) = wallet_manager {
let confirm_key = matches.try_contains_id("confirm_key").unwrap_or(false);
let path = generate_remote_keypair(
locator,
derivation_path.unwrap_or_default(),
wallet_manager,
confirm_key,
keypair_name,
)
.map(|keypair| keypair.path)?;
Ok(Some(path))
} else {
Err(RemoteWalletError::NoDeviceFound.into())
}
}
_ => Ok(Some(path.to_string())),
}
}
// Keyword used to indicate that the user should be prompted for a keypair seed phrase
pub const ASK_KEYWORD: &str = "ASK";
pub const SKIP_SEED_PHRASE_VALIDATION_ARG: ArgConstant<'static> = ArgConstant {
long: "skip-seed-phrase-validation",
name: "skip_seed_phrase_validation",
help: "Skip validation of seed phrases. Use this if your phrase does not use the BIP39 official English word list",
};
/// Prompts user for a passphrase and then asks for confirmirmation to check for mistakes
pub fn prompt_passphrase(prompt: &str) -> Result<String, Box<dyn error::Error>> {
let passphrase = prompt_password(prompt)?;
if !passphrase.is_empty() {
let confirmed = rpassword::prompt_password("Enter same passphrase again: ")?;
if confirmed != passphrase {
return Err("Passphrases did not match".into());
}
}
Ok(passphrase)
}
/// Loads a [Keypair] from one of several possible sources.
///
/// The `path` is not strictly a file system path, but is interpreted as various
/// types of _signing source_, depending on its format, one of which is a path
/// to a keypair file. Some sources may require user interaction in the course
/// of calling this function.
///
/// This is the same as [`signer_from_path`] except that it only supports
/// signing sources that can result in a [Keypair]: prompt for seed phrase,
/// keypair file, and stdin.
///
/// If `confirm_pubkey` is `true` then after deriving the pubkey, the user will
/// be prompted to confirm that the pubkey is as expected.
///
/// See [`signer_from_path`] for full documentation of how this function
/// interprets its arguments.
///
/// # Examples
///
/// ```no_run
/// use clap::{Arg, Command};
/// use solana_clap_v3_utils::keypair::keypair_from_path;
///
/// let clap_app = Command::new("my-program")
/// // The argument we'll parse as a signer "path"
/// .arg(Arg::new("keypair")
/// .required(true)
/// .help("The default signer"));
///
/// let clap_matches = clap_app.get_matches();
/// let keypair_str: String = clap_matches.value_of_t_or_exit("keypair");
///
/// let signer = keypair_from_path(
/// &clap_matches,
/// &keypair_str,
/// "keypair",
/// false,
/// )?;
/// # Ok::<(), Box<dyn std::error::Error>>(())
/// ```
pub fn keypair_from_path(
matches: &ArgMatches,
path: &str,
keypair_name: &str,
confirm_pubkey: bool,
) -> Result<Keypair, Box<dyn error::Error>> {
let keypair = encodable_key_from_path(matches, path, keypair_name)?;
if confirm_pubkey {
confirm_encodable_keypair_pubkey(&keypair, "pubkey");
}
Ok(keypair)
}
/// Loads an [ElGamalKeypair] from one of several possible sources.
///
/// If `confirm_pubkey` is `true` then after deriving the keypair, the user will
/// be prompted to confirm that the ElGamal pubkey is as expected.
///
/// The way this function interprets its arguments is analogous to that of
/// [`signer_from_path`].
///
/// The bip32 hierarchical derivation of an ElGamal keypair is not currently
/// supported.
///
/// # Examples
///
/// ```no_run`
/// use clap::{Arg, Command};
/// use solana_clap_v3_utils::keypair::elgamal_keypair_from_path;
///
/// let clap_app = Command::new("my-program")
/// // The argument we'll parse as a signer "path"
/// .arg(Arg::new("elgamal-keypair")
/// .required(true)
/// .help("The default signer"));
///
/// let clap_matches = clap_app.get_matches();
/// let elgamal_keypair_str: String = clap_matches.value_of_t_or_exit("elgamal-keypair");
///
/// let elgamal_keypair = elgamal_keypair_from_path(
/// &clap_matches,
/// &elgamal_keypair_str,
/// "elgamal-keypair",
/// false,
/// )?;
/// # Ok::<(), Box<dyn std::error::Error>>(())
/// ```
pub fn elgamal_keypair_from_path(
matches: &ArgMatches,
path: &str,
elgamal_keypair_name: &str,
confirm_pubkey: bool,
) -> Result<ElGamalKeypair, Box<dyn error::Error>> {
let elgamal_keypair = encodable_key_from_path(matches, path, elgamal_keypair_name)?;
if confirm_pubkey {
confirm_encodable_keypair_pubkey(&elgamal_keypair, "ElGamal pubkey");
}
Ok(elgamal_keypair)
}
fn confirm_encodable_keypair_pubkey<K: EncodableKeypair>(keypair: &K, pubkey_label: &str) {
let pubkey = keypair.encodable_pubkey().to_string();
println!("Recovered {pubkey_label} `{pubkey:?}`. Continue? (y/n): ");
let _ignored = stdout().flush();
let mut input = String::new();
stdin().read_line(&mut input).expect("Unexpected input");
if input.to_lowercase().trim() != "y" {
println!("Exiting");
exit(1);
}
}
/// Loads an [AeKey] from one of several possible sources.
///
/// The way this function interprets its arguments is analogous to that of
/// [`signer_from_path`].
///
/// The bip32 hierarchical derivation of an authenticated encryption key is not
/// currently supported.
///
/// # Examples
///
/// ```no_run`
/// use clap::{Arg, Command};
/// use solana_clap_v3_utils::keypair::ae_key_from_path;
///
/// let clap_app = Command::new("my-program")
/// // The argument we'll parse as a signer "path"
/// .arg(Arg::new("ae-key")
/// .required(true)
/// .help("The default signer"));
///
/// let clap_matches = clap_app.get_matches();
/// let ae_key_str: String = clap_matches.value_of_t_or_exit("ae-key");
///
/// let ae_key = ae_key_from_path(
/// &clap_matches,
/// &ae_key_str,
/// "ae-key",
/// )?;
/// # Ok::<(), Box<dyn std::error::Error>>(())
/// ```
pub fn ae_key_from_path(
matches: &ArgMatches,
path: &str,
key_name: &str,
) -> Result<AeKey, Box<dyn error::Error>> {
encodable_key_from_path(matches, path, key_name)
}
fn encodable_key_from_path<K: EncodableKey + SeedDerivable>(
matches: &ArgMatches,
path: &str,
keypair_name: &str,
) -> Result<K, Box<dyn error::Error>> {
let SignerSource {
kind,
derivation_path,
legacy,
} = parse_signer_source(path)?;
match kind {
SignerSourceKind::Prompt => {
let skip_validation = matches.is_present(SKIP_SEED_PHRASE_VALIDATION_ARG.name);
Ok(encodable_key_from_seed_phrase(
keypair_name,
skip_validation,
derivation_path,
legacy,
)?)
}
SignerSourceKind::Filepath(path) => match K::read_from_file(&path) {
Err(e) => Err(std::io::Error::new(
std::io::ErrorKind::Other,
format!(
"could not read keypair file \"{path}\". \
Run \"solana-keygen new\" to create a keypair file: {e}"
),
)
.into()),
Ok(file) => Ok(file),
},
SignerSourceKind::Stdin => {
let mut stdin = std::io::stdin();
Ok(K::read(&mut stdin)?)
}
_ => Err(std::io::Error::new(
std::io::ErrorKind::Other,
format!("signer of type `{kind:?}` does not support Keypair output"),
)
.into()),
}
}
/// Reads user input from stdin to retrieve a seed phrase and passphrase for keypair derivation.
///
/// Optionally skips validation of seed phrase. Optionally confirms recovered
/// public key.
pub fn keypair_from_seed_phrase(
keypair_name: &str,
skip_validation: bool,
confirm_pubkey: bool,
derivation_path: Option<DerivationPath>,
legacy: bool,
) -> Result<Keypair, Box<dyn error::Error>> {
let keypair: Keypair =
encodable_key_from_seed_phrase(keypair_name, skip_validation, derivation_path, legacy)?;
if confirm_pubkey {
confirm_encodable_keypair_pubkey(&keypair, "pubkey");
}
Ok(keypair)
}
/// Reads user input from stdin to retrieve a seed phrase and passphrase for ElGamal keypair
/// derivation.
///
/// Optionally skips validation of seed phrase. Optionally confirms recovered public key.
pub fn elgamal_keypair_from_seed_phrase(
elgamal_keypair_name: &str,
skip_validation: bool,
confirm_pubkey: bool,
derivation_path: Option<DerivationPath>,
legacy: bool,
) -> Result<ElGamalKeypair, Box<dyn error::Error>> {
let elgamal_keypair: ElGamalKeypair = encodable_key_from_seed_phrase(
elgamal_keypair_name,
skip_validation,
derivation_path,
legacy,
)?;
if confirm_pubkey {
confirm_encodable_keypair_pubkey(&elgamal_keypair, "ElGamal pubkey");
}
Ok(elgamal_keypair)
}
/// Reads user input from stdin to retrieve a seed phrase and passphrase for an authenticated
/// encryption keypair derivation.
pub fn ae_key_from_seed_phrase(
keypair_name: &str,
skip_validation: bool,
derivation_path: Option<DerivationPath>,
legacy: bool,
) -> Result<AeKey, Box<dyn error::Error>> {
encodable_key_from_seed_phrase(keypair_name, skip_validation, derivation_path, legacy)
}
fn encodable_key_from_seed_phrase<K: EncodableKey + SeedDerivable>(
key_name: &str,
skip_validation: bool,
derivation_path: Option<DerivationPath>,
legacy: bool,
) -> Result<K, Box<dyn error::Error>> {
let seed_phrase = prompt_password(format!("[{key_name}] seed phrase: "))?;
let seed_phrase = seed_phrase.trim();
let passphrase_prompt = format!(
"[{key_name}] If this seed phrase has an associated passphrase, enter it now. Otherwise, press ENTER to continue: ",
);
let key = if skip_validation {
let passphrase = prompt_passphrase(&passphrase_prompt)?;
if legacy {
K::from_seed_phrase_and_passphrase(seed_phrase, &passphrase)?
} else {
let seed = generate_seed_from_seed_phrase_and_passphrase(seed_phrase, &passphrase);
K::from_seed_and_derivation_path(&seed, derivation_path)?
}
} else {
let sanitized = sanitize_seed_phrase(seed_phrase);
let parse_language_fn = || {
for language in &[
Language::English,
Language::ChineseSimplified,
Language::ChineseTraditional,
Language::Japanese,
Language::Spanish,
Language::Korean,
Language::French,
Language::Italian,
] {
if let Ok(mnemonic) = Mnemonic::from_phrase(&sanitized, *language) {
return Ok(mnemonic);
}
}
Err("Can't get mnemonic from seed phrases")
};
let mnemonic = parse_language_fn()?;
let passphrase = prompt_passphrase(&passphrase_prompt)?;
let seed = Seed::new(&mnemonic, &passphrase);
if legacy {
K::from_seed(seed.as_bytes())?
} else {
K::from_seed_and_derivation_path(seed.as_bytes(), derivation_path)?
}
};
Ok(key)
}
fn sanitize_seed_phrase(seed_phrase: &str) -> String {
seed_phrase
.split_whitespace()
.collect::<Vec<&str>>()
.join(" ")
}
#[cfg(test)]
mod tests {
use {
super::*,
crate::offline::OfflineArgs,
clap::{Arg, Command},
solana_remote_wallet::{locator::Manufacturer, remote_wallet::initialize_wallet_manager},
solana_sdk::{signer::keypair::write_keypair_file, system_instruction},
tempfile::{NamedTempFile, TempDir},
};
#[test]
fn test_sanitize_seed_phrase() {
let seed_phrase = " Mary had\ta\u{2009}little \n\t lamb";
assert_eq!(
"Mary had a little lamb".to_owned(),
sanitize_seed_phrase(seed_phrase)
);
}
#[test]
fn test_signer_info_signers_for_message() {
let source = Keypair::new();
let fee_payer = Keypair::new();
let nonsigner1 = Keypair::new();
let nonsigner2 = Keypair::new();
let recipient = Pubkey::new_unique();
let message = Message::new(
&[system_instruction::transfer(
&source.pubkey(),
&recipient,
42,
)],
Some(&fee_payer.pubkey()),
);
let signers = vec![
Box::new(fee_payer) as Box<dyn Signer>,
Box::new(source) as Box<dyn Signer>,
Box::new(nonsigner1) as Box<dyn Signer>,
Box::new(nonsigner2) as Box<dyn Signer>,
];
let signer_info = CliSignerInfo { signers };
let msg_signers = signer_info.signers_for_message(&message);
let signer_pubkeys = msg_signers.iter().map(|s| s.pubkey()).collect::<Vec<_>>();
let expect = vec![
signer_info.signers[0].pubkey(),
signer_info.signers[1].pubkey(),
];
assert_eq!(signer_pubkeys, expect);
}
#[test]
fn test_parse_signer_source() {
assert!(matches!(
parse_signer_source(STDOUT_OUTFILE_TOKEN).unwrap(),
SignerSource {
kind: SignerSourceKind::Stdin,
derivation_path: None,
legacy: false,
}
));
let stdin = "stdin:".to_string();
assert!(matches!(
parse_signer_source(stdin).unwrap(),
SignerSource {
kind: SignerSourceKind::Stdin,
derivation_path: None,
legacy: false,
}
));
assert!(matches!(
parse_signer_source(ASK_KEYWORD).unwrap(),
SignerSource {
kind: SignerSourceKind::Prompt,
derivation_path: None,
legacy: true,
}
));
let pubkey = Pubkey::new_unique();
assert!(
matches!(parse_signer_source(pubkey.to_string()).unwrap(), SignerSource {
kind: SignerSourceKind::Pubkey(p),
derivation_path: None,
legacy: false,
}
if p == pubkey)
);
// Set up absolute and relative path strs
let file0 = NamedTempFile::new().unwrap();
let path = file0.path();
assert!(path.is_absolute());
let absolute_path_str = path.to_str().unwrap();
let file1 = NamedTempFile::new_in(std::env::current_dir().unwrap()).unwrap();
let path = file1.path().file_name().unwrap().to_str().unwrap();
let path = std::path::Path::new(path);
assert!(path.is_relative());
let relative_path_str = path.to_str().unwrap();
assert!(
matches!(parse_signer_source(absolute_path_str).unwrap(), SignerSource {
kind: SignerSourceKind::Filepath(p),
derivation_path: None,
legacy: false,
} if p == absolute_path_str)
);
assert!(
matches!(parse_signer_source(relative_path_str).unwrap(), SignerSource {
kind: SignerSourceKind::Filepath(p),
derivation_path: None,
legacy: false,
} if p == relative_path_str)
);
let usb = "usb://ledger".to_string();
let expected_locator = RemoteWalletLocator {
manufacturer: Manufacturer::Ledger,
pubkey: None,
};
assert!(matches!(parse_signer_source(usb).unwrap(), SignerSource {
kind: SignerSourceKind::Usb(u),
derivation_path: None,
legacy: false,
} if u == expected_locator));
let usb = "usb://ledger?key=0/0".to_string();
let expected_locator = RemoteWalletLocator {
manufacturer: Manufacturer::Ledger,
pubkey: None,
};
let expected_derivation_path = Some(DerivationPath::new_bip44(Some(0), Some(0)));
assert!(matches!(parse_signer_source(usb).unwrap(), SignerSource {
kind: SignerSourceKind::Usb(u),
derivation_path: d,
legacy: false,
} if u == expected_locator && d == expected_derivation_path));
// Catchall into SignerSource::Filepath fails
let junk = "sometextthatisnotapubkeyorfile".to_string();
assert!(Pubkey::from_str(&junk).is_err());
assert!(matches!(
parse_signer_source(&junk),
Err(SignerSourceError::IoError(_))
));
let prompt = "prompt:".to_string();
assert!(matches!(
parse_signer_source(prompt).unwrap(),
SignerSource {
kind: SignerSourceKind::Prompt,
derivation_path: None,
legacy: false,
}
));
assert!(
matches!(parse_signer_source(format!("file:{absolute_path_str}")).unwrap(), SignerSource {
kind: SignerSourceKind::Filepath(p),
derivation_path: None,
legacy: false,
} if p == absolute_path_str)
);
assert!(
matches!(parse_signer_source(format!("file:{relative_path_str}")).unwrap(), SignerSource {
kind: SignerSourceKind::Filepath(p),
derivation_path: None,
legacy: false,
} if p == relative_path_str)
);
}
#[test]
fn signer_from_path_with_file() -> Result<(), Box<dyn std::error::Error>> {
let dir = TempDir::new()?;
let dir = dir.path();
let keypair_path = dir.join("id.json");
let keypair_path_str = keypair_path.to_str().expect("utf-8");
let keypair = Keypair::new();
write_keypair_file(&keypair, &keypair_path)?;
let args = vec!["program", keypair_path_str];
let clap_app = Command::new("my-program")
.arg(
Arg::new("keypair")
.required(true)
.help("The signing keypair"),
)
.offline_args();
let clap_matches = clap_app.get_matches_from(args);
let keypair_str: String = clap_matches.value_of_t_or_exit("keypair");
let wallet_manager = initialize_wallet_manager()?;
let signer = signer_from_path(
&clap_matches,
&keypair_str,
"signer",
&mut Some(wallet_manager),
)?;
assert_eq!(keypair.pubkey(), signer.pubkey());
Ok(())
}
}