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use std::borrow::Cow;
use solana_extra_wasm::program::spl_token_2022::{
generic_token_account::GenericTokenAccount, state::Account,
};
use solana_sdk::{
account::{AccountSharedData, ReadableAccount},
pubkey::Pubkey,
};
use thiserror::Error;
#[derive(Debug, Clone, PartialEq, Eq, Hash, Serialize, Deserialize)]
#[serde(rename_all = "camelCase", untagged)]
pub enum MemcmpEncodedBytes {
#[deprecated(
since = "1.8.1",
note = "Please use MemcmpEncodedBytes::Base58 instead"
)]
Binary(String),
Base58(String),
Base64(String),
Bytes(Vec<u8>),
}
#[derive(Debug, Clone, PartialEq, Eq, Hash, Serialize, Deserialize)]
#[serde(rename_all = "camelCase")]
pub enum MemcmpEncoding {
Binary,
}
#[derive(Debug, Clone, PartialEq, Eq, Hash, Serialize, Deserialize)]
pub struct Memcmp {
pub offset: usize,
pub bytes: MemcmpEncodedBytes,
pub encoding: Option<MemcmpEncoding>,
}
impl Memcmp {
pub fn bytes(&self) -> Option<Cow<Vec<u8>>> {
use MemcmpEncodedBytes::*;
match &self.bytes {
Binary(bytes) | Base58(bytes) => bs58::decode(bytes).into_vec().ok().map(Cow::Owned),
Base64(bytes) => base64::decode(bytes).ok().map(Cow::Owned),
Bytes(bytes) => Some(Cow::Borrowed(bytes)),
}
}
pub fn bytes_match(&self, data: &[u8]) -> bool {
match self.bytes() {
Some(bytes) => {
if self.offset > data.len() {
return false;
}
if data[self.offset..].len() < bytes.len() {
return false;
}
data[self.offset..self.offset + bytes.len()] == bytes[..]
}
None => false,
}
}
}
const MAX_DATA_SIZE: usize = 128;
const MAX_DATA_BASE58_SIZE: usize = 175;
const MAX_DATA_BASE64_SIZE: usize = 172;
#[derive(Debug, Clone, PartialEq, Eq, Hash, Serialize, Deserialize)]
#[serde(rename_all = "camelCase")]
pub enum RpcFilterType {
DataSize(u64),
Memcmp(Memcmp),
TokenAccountState,
}
impl RpcFilterType {
pub fn verify(&self) -> Result<(), RpcFilterError> {
match self {
RpcFilterType::DataSize(_) => Ok(()),
RpcFilterType::Memcmp(compare) => {
let encoding = compare.encoding.as_ref().unwrap_or(&MemcmpEncoding::Binary);
match encoding {
MemcmpEncoding::Binary => {
use MemcmpEncodedBytes::*;
match &compare.bytes {
Binary(bytes) => {
if bytes.len() > MAX_DATA_BASE58_SIZE {
return Err(RpcFilterError::Base58DataTooLarge);
}
let bytes = bs58::decode(&bytes)
.into_vec()
.map_err(RpcFilterError::DecodeError)?;
if bytes.len() > MAX_DATA_SIZE {
Err(RpcFilterError::Base58DataTooLarge)
} else {
Ok(())
}
}
Base58(bytes) => {
if bytes.len() > MAX_DATA_BASE58_SIZE {
return Err(RpcFilterError::DataTooLarge);
}
let bytes = bs58::decode(&bytes).into_vec()?;
if bytes.len() > MAX_DATA_SIZE {
Err(RpcFilterError::DataTooLarge)
} else {
Ok(())
}
}
Base64(bytes) => {
if bytes.len() > MAX_DATA_BASE64_SIZE {
return Err(RpcFilterError::DataTooLarge);
}
let bytes = base64::decode(&bytes)?;
if bytes.len() > MAX_DATA_SIZE {
Err(RpcFilterError::DataTooLarge)
} else {
Ok(())
}
}
Bytes(bytes) => {
if bytes.len() > MAX_DATA_SIZE {
return Err(RpcFilterError::DataTooLarge);
}
Ok(())
}
}
}
}
}
RpcFilterType::TokenAccountState => Ok(()),
}
}
pub fn allows(&self, account: &AccountSharedData) -> bool {
match self {
RpcFilterType::DataSize(size) => account.data().len() as u64 == *size,
RpcFilterType::Memcmp(compare) => compare.bytes_match(account.data()),
RpcFilterType::TokenAccountState => Account::valid_account_data(account.data()),
}
}
}
#[derive(Error, PartialEq, Eq, Debug)]
pub enum RpcFilterError {
#[error("encoded binary data should be less than 129 bytes")]
DataTooLarge,
#[deprecated(
since = "1.8.1",
note = "Error for MemcmpEncodedBytes::Binary which is deprecated"
)]
#[error("encoded binary (base 58) data should be less than 129 bytes")]
Base58DataTooLarge,
#[deprecated(
since = "1.8.1",
note = "Error for MemcmpEncodedBytes::Binary which is deprecated"
)]
#[error("bs58 decode error")]
DecodeError(bs58::decode::Error),
#[error("base58 decode error")]
Base58DecodeError(#[from] bs58::decode::Error),
#[error("base64 decode error")]
Base64DecodeError(#[from] base64::DecodeError),
}
#[derive(Serialize, Deserialize)]
pub enum TokenAccountsFilter {
Mint(Pubkey),
ProgramId(Pubkey),
}