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#![cfg(feature = "std")]
use super::{
FeeBumpTransaction, FeeBumpTransactionEnvelope, FeeBumpTransactionInnerTx, Hash, Limits,
Transaction, TransactionEnvelope, TransactionSignaturePayload,
TransactionSignaturePayloadTaggedTransaction, TransactionV0, TransactionV0Envelope,
TransactionV1Envelope, WriteXdr,
};
use sha2::{Digest, Sha256};
impl TransactionEnvelope {
/// Computes the hash of the transaction envelope.
///
/// # Arguments
///
/// * `network_id` - The network ID to include in the hash computation.
///
/// # Returns
///
/// The transaction hash.
///
/// # Errors
///
/// If there is any issue serializing to XDR.
pub fn hash(&self, network_id: [u8; 32]) -> Result<[u8; 32], super::Error> {
match self {
TransactionEnvelope::TxV0(e) => e.hash(network_id),
TransactionEnvelope::Tx(e) => e.hash(network_id),
TransactionEnvelope::TxFeeBump(e) => e.hash(network_id),
}
}
}
impl TransactionV0Envelope {
/// Computes the hash of the V0 transaction envelope.
///
/// # Arguments
///
/// * `network_id` - The network ID to include in the hash computation.
///
/// # Returns
///
/// The transaction hash.
///
/// # Errors
///
/// If there is any issue serializing to XDR.
pub fn hash(&self, network_id: [u8; 32]) -> Result<[u8; 32], super::Error> {
self.tx.hash(network_id)
}
}
impl TransactionV1Envelope {
/// Computes the hash of the V1 transaction envelope.
///
/// # Arguments
///
/// * `network_id` - The network ID to include in the hash computation.
///
/// # Returns
///
/// The transaction hash.
///
/// # Errors
///
/// If there is any issue serializing to XDR.
pub fn hash(&self, network_id: [u8; 32]) -> Result<[u8; 32], super::Error> {
self.tx.hash(network_id)
}
}
impl TransactionV0 {
/// Computes the hash of the V0 transaction.
///
/// # Arguments
///
/// * `network_id` - The network ID to include in the hash computation.
///
/// # Returns
///
/// The transaction hash.
///
/// # Errors
///
/// If there is any issue serializing to XDR.
pub fn hash(&self, network_id: [u8; 32]) -> Result<[u8; 32], super::Error> {
<_ as Into<Transaction>>::into(self).hash(network_id)
}
}
impl FeeBumpTransactionEnvelope {
/// Computes the hash of the fee bump transaction envelope.
///
/// # Arguments
///
/// * `network_id` - The network ID to include in the hash computation.
///
/// # Returns
///
/// The transaction hash.
///
/// # Errors
///
/// If there is any issue serializing to XDR.
pub fn hash(&self, network_id: [u8; 32]) -> Result<[u8; 32], super::Error> {
self.tx.hash(network_id)
}
}
impl FeeBumpTransactionInnerTx {
/// Computes the hash of the fee bump transaction inner tx.
///
/// # Arguments
///
/// * `network_id` - The network ID to include in the hash computation.
///
/// # Returns
///
/// The transaction hash.
///
/// # Errors
///
/// If there is any issue serializing to XDR.
pub fn hash(&self, network_id: [u8; 32]) -> Result<[u8; 32], super::Error> {
match self {
Self::Tx(inner_tx) => inner_tx.hash(network_id),
}
}
}
impl Transaction {
/// Computes the hash of the transaction.
///
/// # Arguments
///
/// * `network_id` - The network ID to include in the hash computation.
///
/// # Returns
///
/// The transaction hash.
///
/// # Errors
///
/// If there is any issue serializing to XDR.
pub fn hash(&self, network_id: [u8; 32]) -> Result<[u8; 32], super::Error> {
let payload = TransactionSignaturePayload {
network_id: Hash(network_id),
// TODO: Add support for borrowing the self here instead of cloning it.
tagged_transaction: TransactionSignaturePayloadTaggedTransaction::Tx(self.clone()),
};
let payload = payload.to_xdr(Limits::none())?;
let hash = Sha256::digest(payload);
Ok(hash.into())
}
}
impl FeeBumpTransaction {
/// Computes the hash of the fee bump transaction.
///
/// # Arguments
///
/// * `network_id` - The network ID to include in the hash computation.
///
/// # Returns
///
/// The transaction hash.
///
/// # Errors
///
/// If there is any issue serializing to XDR.
pub fn hash(&self, network_id: [u8; 32]) -> Result<[u8; 32], super::Error> {
let payload = TransactionSignaturePayload {
network_id: Hash(network_id),
tagged_transaction: TransactionSignaturePayloadTaggedTransaction::TxFeeBump(
self.clone(),
),
};
let payload = payload.to_xdr(Limits::none())?;
let hash = Sha256::digest(payload);
Ok(hash.into())
}
}