2021-05-06 23:51:52 -07:00
|
|
|
#![cfg(feature = "full")]
|
|
|
|
|
|
|
|
use {
|
|
|
|
crate::{
|
|
|
|
pubkey::Pubkey,
|
|
|
|
signature::{PresignerError, Signature},
|
|
|
|
transaction::TransactionError,
|
|
|
|
},
|
|
|
|
itertools::Itertools,
|
|
|
|
thiserror::Error,
|
|
|
|
};
|
|
|
|
|
|
|
|
pub mod keypair;
|
2021-05-07 01:00:06 -07:00
|
|
|
pub mod presigner;
|
2021-05-06 23:51:52 -07:00
|
|
|
|
|
|
|
#[derive(Debug, Error, PartialEq)]
|
|
|
|
pub enum SignerError {
|
|
|
|
#[error("keypair-pubkey mismatch")]
|
|
|
|
KeypairPubkeyMismatch,
|
|
|
|
|
|
|
|
#[error("not enough signers")]
|
|
|
|
NotEnoughSigners,
|
|
|
|
|
|
|
|
#[error("transaction error")]
|
|
|
|
TransactionError(#[from] TransactionError),
|
|
|
|
|
|
|
|
#[error("custom error: {0}")]
|
|
|
|
Custom(String),
|
|
|
|
|
|
|
|
// Presigner-specific Errors
|
|
|
|
#[error("presigner error")]
|
|
|
|
PresignerError(#[from] PresignerError),
|
|
|
|
|
|
|
|
// Remote Keypair-specific Errors
|
|
|
|
#[error("connection error: {0}")]
|
|
|
|
Connection(String),
|
|
|
|
|
|
|
|
#[error("invalid input: {0}")]
|
|
|
|
InvalidInput(String),
|
|
|
|
|
|
|
|
#[error("no device found")]
|
|
|
|
NoDeviceFound,
|
|
|
|
|
|
|
|
#[error("{0}")]
|
|
|
|
Protocol(String),
|
|
|
|
|
|
|
|
#[error("{0}")]
|
|
|
|
UserCancel(String),
|
|
|
|
}
|
|
|
|
|
|
|
|
/// The `Signer` trait declares operations that all digital signature providers
|
|
|
|
/// must support. It is the primary interface by which signers are specified in
|
|
|
|
/// `Transaction` signing interfaces
|
|
|
|
pub trait Signer {
|
|
|
|
/// Infallibly gets the implementor's public key. Returns the all-zeros
|
|
|
|
/// `Pubkey` if the implementor has none.
|
|
|
|
fn pubkey(&self) -> Pubkey {
|
|
|
|
self.try_pubkey().unwrap_or_default()
|
|
|
|
}
|
|
|
|
/// Fallibly gets the implementor's public key
|
|
|
|
fn try_pubkey(&self) -> Result<Pubkey, SignerError>;
|
|
|
|
/// Invallibly produces an Ed25519 signature over the provided `message`
|
|
|
|
/// bytes. Returns the all-zeros `Signature` if signing is not possible.
|
|
|
|
fn sign_message(&self, message: &[u8]) -> Signature {
|
|
|
|
self.try_sign_message(message).unwrap_or_default()
|
|
|
|
}
|
|
|
|
/// Fallibly produces an Ed25519 signature over the provided `message` bytes.
|
|
|
|
fn try_sign_message(&self, message: &[u8]) -> Result<Signature, SignerError>;
|
|
|
|
}
|
|
|
|
|
|
|
|
impl<T> From<T> for Box<dyn Signer>
|
|
|
|
where
|
|
|
|
T: Signer + 'static,
|
|
|
|
{
|
|
|
|
fn from(signer: T) -> Self {
|
|
|
|
Box::new(signer)
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
impl PartialEq for dyn Signer {
|
|
|
|
fn eq(&self, other: &dyn Signer) -> bool {
|
|
|
|
self.pubkey() == other.pubkey()
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
impl std::fmt::Debug for dyn Signer {
|
|
|
|
fn fmt(&self, fmt: &mut std::fmt::Formatter) -> std::fmt::Result {
|
|
|
|
write!(fmt, "Signer: {:?}", self.pubkey())
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/// Removes duplicate signers while preserving order. O(n²)
|
|
|
|
pub fn unique_signers(signers: Vec<&dyn Signer>) -> Vec<&dyn Signer> {
|
|
|
|
signers.into_iter().unique_by(|s| s.pubkey()).collect()
|
|
|
|
}
|
|
|
|
|
|
|
|
#[cfg(test)]
|
|
|
|
mod tests {
|
|
|
|
use super::*;
|
|
|
|
use crate::signer::keypair::Keypair;
|
|
|
|
|
|
|
|
fn pubkeys(signers: &[&dyn Signer]) -> Vec<Pubkey> {
|
|
|
|
signers.iter().map(|x| x.pubkey()).collect()
|
|
|
|
}
|
|
|
|
|
|
|
|
#[test]
|
|
|
|
fn test_unique_signers() {
|
|
|
|
let alice = Keypair::new();
|
|
|
|
let bob = Keypair::new();
|
|
|
|
assert_eq!(
|
|
|
|
pubkeys(&unique_signers(vec![&alice, &bob, &alice])),
|
|
|
|
pubkeys(&[&alice, &bob])
|
|
|
|
);
|
|
|
|
}
|
|
|
|
}
|