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eth.rs
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/******************************************************************************
* Copyright © 2023 Pampex LTD and TillyHK LTD *
* *
* See the CONTRIBUTOR-LICENSE-AGREEMENT, COPYING, LICENSE-COPYRIGHT-NOTICE *
* and DEVELOPER-CERTIFICATE-OF-ORIGIN files in the LEGAL directory in *
* the top-level directory of this distribution for the individual copyright *
* holder information and the developer policies on copyright and licensing. *
* *
* Unless otherwise agreed in a custom licensing agreement, no part of the *
* Komodo DeFi Framework software, including this file may be copied, modified, propagated *
* or distributed except according to the terms contained in the *
* LICENSE-COPYRIGHT-NOTICE file. *
* *
* Removal or modification of this copyright notice is prohibited. *
* *
******************************************************************************/
//
// eth.rs
// marketmaker
//
// Copyright © 2023 Pampex LTD and TillyHK LTD. All rights reserved.
//
use super::eth::Action::{Call, Create};
use crate::lp_price::get_base_price_in_rel;
use crate::nft::nft_structs::{ContractType, ConvertChain, TransactionNftDetails, WithdrawErc1155, WithdrawErc721};
use crate::{DexFee, ValidateWatcherSpendInput, WatcherSpendType};
use async_trait::async_trait;
use bitcrypto::{dhash160, keccak256, ripemd160, sha256};
use common::custom_futures::repeatable::{Ready, Retry, RetryOnError};
use common::custom_futures::timeout::FutureTimerExt;
use common::executor::{abortable_queue::AbortableQueue, AbortableSystem, AbortedError, Timer};
use common::log::{debug, error, info, warn};
use common::number_type_casting::SafeTypeCastingNumbers;
use common::{get_utc_timestamp, now_sec, small_rng, DEX_FEE_ADDR_RAW_PUBKEY};
#[cfg(target_arch = "wasm32")]
use common::{now_ms, wait_until_ms};
use crypto::privkey::key_pair_from_secret;
use crypto::{CryptoCtx, CryptoCtxError, GlobalHDAccountArc, KeyPairPolicy, StandardHDCoinAddress};
use derive_more::Display;
use enum_from::EnumFromStringify;
use ethabi::{Contract, Function, Token};
pub use ethcore_transaction::SignedTransaction as SignedEthTx;
use ethcore_transaction::{Action, Transaction as UnSignedEthTx, UnverifiedTransaction};
use ethereum_types::{Address, H160, H256, U256};
use ethkey::{public_to_address, KeyPair, Public, Signature};
use ethkey::{sign, verify_address};
use futures::compat::Future01CompatExt;
use futures::future::{join_all, select_ok, try_join_all, Either, FutureExt, TryFutureExt};
use futures01::Future;
use http::StatusCode;
use mm2_core::mm_ctx::{MmArc, MmWeak};
use mm2_err_handle::prelude::*;
use mm2_event_stream::behaviour::{EventBehaviour, EventInitStatus};
use mm2_net::transport::{slurp_url, GuiAuthValidation, GuiAuthValidationGenerator, SlurpError};
use mm2_number::bigdecimal_custom::CheckedDivision;
use mm2_number::{BigDecimal, MmNumber};
use mm2_rpc::data::legacy::GasStationPricePolicy;
#[cfg(test)] use mocktopus::macros::*;
use rand::seq::SliceRandom;
use rpc::v1::types::Bytes as BytesJson;
use secp256k1::PublicKey;
use serde_json::{self as json, Value as Json};
use serialization::{CompactInteger, Serializable, Stream};
use sha3::{Digest, Keccak256};
use std::collections::HashMap;
use std::convert::{TryFrom, TryInto};
use std::ops::Deref;
#[cfg(not(target_arch = "wasm32"))] use std::path::PathBuf;
use std::str::FromStr;
use std::sync::atomic::{AtomicU64, Ordering as AtomicOrdering};
use std::sync::{Arc, Mutex};
use web3::types::{Action as TraceAction, BlockId, BlockNumber, Bytes, CallRequest, FilterBuilder, Log, Trace,
TraceFilterBuilder, Transaction as Web3Transaction, TransactionId, U64};
use web3::{self, Web3};
use web3_transport::{http_transport::HttpTransportNode, EthFeeHistoryNamespace, Web3Transport};
cfg_wasm32! {
use crypto::MetamaskArc;
use ethereum_types::{H264, H520};
use mm2_metamask::MetamaskError;
use web3::types::TransactionRequest;
}
use super::watcher_common::{validate_watcher_reward, REWARD_GAS_AMOUNT};
use super::{coin_conf, lp_coinfind_or_err, AsyncMutex, BalanceError, BalanceFut, CheckIfMyPaymentSentArgs,
CoinBalance, CoinFutSpawner, CoinProtocol, CoinTransportMetrics, CoinsContext, ConfirmPaymentInput,
EthValidateFeeArgs, FeeApproxStage, FoundSwapTxSpend, HistorySyncState, IguanaPrivKey, MakerSwapTakerCoin,
MarketCoinOps, MmCoin, MmCoinEnum, MyAddressError, MyWalletAddress, NegotiateSwapContractAddrErr,
NumConversError, NumConversResult, PaymentInstructionArgs, PaymentInstructions, PaymentInstructionsErr,
PrivKeyBuildPolicy, PrivKeyPolicyNotAllowed, RawTransactionError, RawTransactionFut,
RawTransactionRequest, RawTransactionRes, RawTransactionResult, RefundError, RefundPaymentArgs,
RefundResult, RewardTarget, RpcClientType, RpcTransportEventHandler, RpcTransportEventHandlerShared,
SearchForSwapTxSpendInput, SendMakerPaymentSpendPreimageInput, SendPaymentArgs, SignEthTransactionParams,
SignRawTransactionEnum, SignRawTransactionRequest, SignatureError, SignatureResult, SpendPaymentArgs,
SwapOps, TakerSwapMakerCoin, TradeFee, TradePreimageError, TradePreimageFut, TradePreimageResult,
TradePreimageValue, Transaction, TransactionDetails, TransactionEnum, TransactionErr, TransactionFut,
TransactionType, TxMarshalingErr, UnexpectedDerivationMethod, ValidateAddressResult, ValidateFeeArgs,
ValidateInstructionsErr, ValidateOtherPubKeyErr, ValidatePaymentError, ValidatePaymentFut,
ValidatePaymentInput, VerificationError, VerificationResult, WaitForHTLCTxSpendArgs, WatcherOps,
WatcherReward, WatcherRewardError, WatcherSearchForSwapTxSpendInput, WatcherValidatePaymentInput,
WatcherValidateTakerFeeInput, WithdrawError, WithdrawFee, WithdrawFut, WithdrawRequest, WithdrawResult,
EARLY_CONFIRMATION_ERR_LOG, INVALID_CONTRACT_ADDRESS_ERR_LOG, INVALID_PAYMENT_STATE_ERR_LOG,
INVALID_RECEIVER_ERR_LOG, INVALID_SENDER_ERR_LOG, INVALID_SWAP_ID_ERR_LOG};
pub use rlp;
mod eth_balance_events;
#[cfg(test)] mod eth_tests;
#[cfg(target_arch = "wasm32")] mod eth_wasm_tests;
mod web3_transport;
#[path = "eth/v2_activation.rs"] pub mod v2_activation;
use crate::nft::{find_wallet_nft_amount, WithdrawNftResult};
use v2_activation::{build_address_and_priv_key_policy, EthActivationV2Error};
mod nonce;
use crate::{PrivKeyPolicy, TransactionResult, WithdrawFrom};
use nonce::ParityNonce;
/// https://github.com/artemii235/etomic-swap/blob/master/contracts/EtomicSwap.sol
/// Dev chain (195.201.137.5:8565) contract address: 0x83965C539899cC0F918552e5A26915de40ee8852
/// Ropsten: https://ropsten.etherscan.io/address/0x7bc1bbdd6a0a722fc9bffc49c921b685ecb84b94
/// ETH mainnet: https://etherscan.io/address/0x8500AFc0bc5214728082163326C2FF0C73f4a871
const SWAP_CONTRACT_ABI: &str = include_str!("eth/swap_contract_abi.json");
/// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20.md
const ERC20_ABI: &str = include_str!("eth/erc20_abi.json");
/// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-721.md
const ERC721_ABI: &str = include_str!("eth/erc721_abi.json");
/// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-1155.md
const ERC1155_ABI: &str = include_str!("eth/erc1155_abi.json");
/// Payment states from etomic swap smart contract: https://github.com/artemii235/etomic-swap/blob/master/contracts/EtomicSwap.sol#L5
pub enum PaymentState {
Uninitialized,
Sent,
Spent,
Refunded,
}
// Ethgasstation API returns response in 10^8 wei units. So 10 from their API mean 1 gwei
const ETH_GAS_STATION_DECIMALS: u8 = 8;
const GAS_PRICE_PERCENT: u64 = 10;
/// It can change 12.5% max each block according to https://www.blocknative.com/blog/eip-1559-fees
const BASE_BLOCK_FEE_DIFF_PCT: u64 = 13;
const DEFAULT_LOGS_BLOCK_RANGE: u64 = 1000;
const DEFAULT_REQUIRED_CONFIRMATIONS: u8 = 1;
const ETH_DECIMALS: u8 = 18;
/// Take into account that the dynamic fee may increase by 3% during the swap.
const GAS_PRICE_APPROXIMATION_PERCENT_ON_START_SWAP: u64 = 3;
/// Take into account that the dynamic fee may increase until the locktime is expired
const GAS_PRICE_APPROXIMATION_PERCENT_ON_WATCHER_PREIMAGE: u64 = 3;
/// Take into account that the dynamic fee may increase at each of the following stages:
/// - it may increase by 2% until a swap is started;
/// - it may increase by 3% during the swap.
const GAS_PRICE_APPROXIMATION_PERCENT_ON_ORDER_ISSUE: u64 = 5;
/// Take into account that the dynamic fee may increase at each of the following stages:
/// - it may increase by 2% until an order is issued;
/// - it may increase by 2% until a swap is started;
/// - it may increase by 3% during the swap.
const GAS_PRICE_APPROXIMATION_PERCENT_ON_TRADE_PREIMAGE: u64 = 7;
const ETH_GAS: u64 = 150_000;
/// Lifetime of generated signed message for gui-auth requests
const GUI_AUTH_SIGNED_MESSAGE_LIFETIME_SEC: i64 = 90;
lazy_static! {
pub static ref SWAP_CONTRACT: Contract = Contract::load(SWAP_CONTRACT_ABI.as_bytes()).unwrap();
pub static ref ERC20_CONTRACT: Contract = Contract::load(ERC20_ABI.as_bytes()).unwrap();
pub static ref ERC721_CONTRACT: Contract = Contract::load(ERC721_ABI.as_bytes()).unwrap();
pub static ref ERC1155_CONTRACT: Contract = Contract::load(ERC1155_ABI.as_bytes()).unwrap();
}
pub type Web3RpcFut<T> = Box<dyn Future<Item = T, Error = MmError<Web3RpcError>> + Send>;
pub type Web3RpcResult<T> = Result<T, MmError<Web3RpcError>>;
pub type GasStationResult = Result<GasStationData, MmError<GasStationReqErr>>;
type EthPrivKeyPolicy = PrivKeyPolicy<KeyPair>;
type GasDetails = (U256, U256);
#[derive(Debug, Display)]
pub enum GasStationReqErr {
#[display(fmt = "Transport '{}' error: {}", uri, error)]
Transport {
uri: String,
error: String,
},
#[display(fmt = "Invalid response: {}", _0)]
InvalidResponse(String),
Internal(String),
}
impl From<serde_json::Error> for GasStationReqErr {
fn from(e: serde_json::Error) -> Self { GasStationReqErr::InvalidResponse(e.to_string()) }
}
impl From<SlurpError> for GasStationReqErr {
fn from(e: SlurpError) -> Self {
let error = e.to_string();
match e {
SlurpError::ErrorDeserializing { .. } => GasStationReqErr::InvalidResponse(error),
SlurpError::Transport { uri, .. } | SlurpError::Timeout { uri, .. } => {
GasStationReqErr::Transport { uri, error }
},
SlurpError::Internal(_) | SlurpError::InvalidRequest(_) => GasStationReqErr::Internal(error),
}
}
}
#[derive(Debug, Display)]
pub enum Web3RpcError {
#[display(fmt = "Transport: {}", _0)]
Transport(String),
#[display(fmt = "Invalid response: {}", _0)]
InvalidResponse(String),
#[display(fmt = "Timeout: {}", _0)]
Timeout(String),
#[display(fmt = "Internal: {}", _0)]
Internal(String),
}
impl From<GasStationReqErr> for Web3RpcError {
fn from(err: GasStationReqErr) -> Self {
match err {
GasStationReqErr::Transport { .. } => Web3RpcError::Transport(err.to_string()),
GasStationReqErr::InvalidResponse(err) => Web3RpcError::InvalidResponse(err),
GasStationReqErr::Internal(err) => Web3RpcError::Internal(err),
}
}
}
impl From<serde_json::Error> for Web3RpcError {
fn from(e: serde_json::Error) -> Self { Web3RpcError::InvalidResponse(e.to_string()) }
}
impl From<web3::Error> for Web3RpcError {
fn from(e: web3::Error) -> Self {
let error_str = e.to_string();
match e {
web3::Error::InvalidResponse(_) | web3::Error::Decoder(_) | web3::Error::Rpc(_) => {
Web3RpcError::InvalidResponse(error_str)
},
web3::Error::Unreachable | web3::Error::Transport(_) | web3::Error::Io(_) => {
Web3RpcError::Transport(error_str)
},
_ => Web3RpcError::Internal(error_str),
}
}
}
impl From<web3::Error> for RawTransactionError {
fn from(e: web3::Error) -> Self { RawTransactionError::Transport(e.to_string()) }
}
impl From<Web3RpcError> for RawTransactionError {
fn from(e: Web3RpcError) -> Self {
match e {
Web3RpcError::Transport(tr) | Web3RpcError::InvalidResponse(tr) => RawTransactionError::Transport(tr),
Web3RpcError::Internal(internal) | Web3RpcError::Timeout(internal) => {
RawTransactionError::InternalError(internal)
},
}
}
}
impl From<ethabi::Error> for Web3RpcError {
fn from(e: ethabi::Error) -> Web3RpcError {
// Currently, we use the `ethabi` crate to work with a smart contract ABI known at compile time.
// It's an internal error if there are any issues during working with a smart contract ABI.
Web3RpcError::Internal(e.to_string())
}
}
#[cfg(target_arch = "wasm32")]
impl From<MetamaskError> for Web3RpcError {
fn from(e: MetamaskError) -> Self {
match e {
MetamaskError::Internal(internal) => Web3RpcError::Internal(internal),
other => Web3RpcError::Transport(other.to_string()),
}
}
}
impl From<ethabi::Error> for WithdrawError {
fn from(e: ethabi::Error) -> Self {
// Currently, we use the `ethabi` crate to work with a smart contract ABI known at compile time.
// It's an internal error if there are any issues during working with a smart contract ABI.
WithdrawError::InternalError(e.to_string())
}
}
impl From<web3::Error> for WithdrawError {
fn from(e: web3::Error) -> Self { WithdrawError::Transport(e.to_string()) }
}
impl From<Web3RpcError> for WithdrawError {
fn from(e: Web3RpcError) -> Self {
match e {
Web3RpcError::Transport(err) | Web3RpcError::InvalidResponse(err) => WithdrawError::Transport(err),
Web3RpcError::Internal(internal) | Web3RpcError::Timeout(internal) => {
WithdrawError::InternalError(internal)
},
}
}
}
impl From<web3::Error> for TradePreimageError {
fn from(e: web3::Error) -> Self { TradePreimageError::Transport(e.to_string()) }
}
impl From<Web3RpcError> for TradePreimageError {
fn from(e: Web3RpcError) -> Self {
match e {
Web3RpcError::Transport(err) | Web3RpcError::InvalidResponse(err) => TradePreimageError::Transport(err),
Web3RpcError::Internal(internal) | Web3RpcError::Timeout(internal) => {
TradePreimageError::InternalError(internal)
},
}
}
}
impl From<ethabi::Error> for TradePreimageError {
fn from(e: ethabi::Error) -> Self {
// Currently, we use the `ethabi` crate to work with a smart contract ABI known at compile time.
// It's an internal error if there are any issues during working with a smart contract ABI.
TradePreimageError::InternalError(e.to_string())
}
}
impl From<ethabi::Error> for BalanceError {
fn from(e: ethabi::Error) -> Self {
// Currently, we use the `ethabi` crate to work with a smart contract ABI known at compile time.
// It's an internal error if there are any issues during working with a smart contract ABI.
BalanceError::Internal(e.to_string())
}
}
impl From<web3::Error> for BalanceError {
fn from(e: web3::Error) -> Self { BalanceError::from(Web3RpcError::from(e)) }
}
impl From<Web3RpcError> for BalanceError {
fn from(e: Web3RpcError) -> Self {
match e {
Web3RpcError::Transport(tr) | Web3RpcError::InvalidResponse(tr) => BalanceError::Transport(tr),
Web3RpcError::Internal(internal) | Web3RpcError::Timeout(internal) => BalanceError::Internal(internal),
}
}
}
#[derive(Debug, Deserialize, Serialize)]
struct SavedTraces {
/// ETH traces for my_address
traces: Vec<Trace>,
/// Earliest processed block
earliest_block: U64,
/// Latest processed block
latest_block: U64,
}
#[derive(Debug, Deserialize, Serialize)]
struct SavedErc20Events {
/// ERC20 events for my_address
events: Vec<Log>,
/// Earliest processed block
earliest_block: U64,
/// Latest processed block
latest_block: U64,
}
#[derive(Debug, PartialEq, Eq)]
pub enum EthCoinType {
/// Ethereum itself or it's forks: ETC/others
Eth,
/// ERC20 token with smart contract address
/// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20.md
Erc20 { platform: String, token_addr: Address },
}
/// An alternative to `crate::PrivKeyBuildPolicy`, typical only for ETH coin.
pub enum EthPrivKeyBuildPolicy {
IguanaPrivKey(IguanaPrivKey),
GlobalHDAccount(GlobalHDAccountArc),
#[cfg(target_arch = "wasm32")]
Metamask(MetamaskArc),
}
impl EthPrivKeyBuildPolicy {
/// Detects the `EthPrivKeyBuildPolicy` with which the given `MmArc` is initialized.
pub fn detect_priv_key_policy(ctx: &MmArc) -> MmResult<EthPrivKeyBuildPolicy, CryptoCtxError> {
let crypto_ctx = CryptoCtx::from_ctx(ctx)?;
match crypto_ctx.key_pair_policy() {
KeyPairPolicy::Iguana => {
// Use an internal private key as the coin secret.
let priv_key = crypto_ctx.mm2_internal_privkey_secret();
Ok(EthPrivKeyBuildPolicy::IguanaPrivKey(priv_key))
},
KeyPairPolicy::GlobalHDAccount(global_hd) => Ok(EthPrivKeyBuildPolicy::GlobalHDAccount(global_hd.clone())),
}
}
}
impl TryFrom<PrivKeyBuildPolicy> for EthPrivKeyBuildPolicy {
type Error = PrivKeyPolicyNotAllowed;
/// Converts `PrivKeyBuildPolicy` to `EthPrivKeyBuildPolicy`
/// taking into account that ETH doesn't support `Trezor` yet.
fn try_from(policy: PrivKeyBuildPolicy) -> Result<Self, Self::Error> {
match policy {
PrivKeyBuildPolicy::IguanaPrivKey(iguana) => Ok(EthPrivKeyBuildPolicy::IguanaPrivKey(iguana)),
PrivKeyBuildPolicy::GlobalHDAccount(global_hd) => Ok(EthPrivKeyBuildPolicy::GlobalHDAccount(global_hd)),
PrivKeyBuildPolicy::Trezor => Err(PrivKeyPolicyNotAllowed::HardwareWalletNotSupported),
}
}
}
/// pImpl idiom.
pub struct EthCoinImpl {
ticker: String,
pub coin_type: EthCoinType,
priv_key_policy: EthPrivKeyPolicy,
my_address: Address,
sign_message_prefix: Option<String>,
swap_contract_address: Address,
fallback_swap_contract: Option<Address>,
contract_supports_watchers: bool,
pub(crate) web3: Web3<Web3Transport>,
/// The separate web3 instances kept to get nonce, will replace the web3 completely soon
web3_instances: Vec<Web3Instance>,
decimals: u8,
gas_station_url: Option<String>,
gas_station_decimals: u8,
gas_station_policy: GasStationPricePolicy,
history_sync_state: Mutex<HistorySyncState>,
required_confirmations: AtomicU64,
/// Coin needs access to the context in order to reuse the logging and shutdown facilities.
/// Using a weak reference by default in order to avoid circular references and leaks.
pub ctx: MmWeak,
chain_id: Option<u64>,
/// the block range used for eth_getLogs
logs_block_range: u64,
nonce_lock: Arc<AsyncMutex<()>>,
erc20_tokens_infos: Arc<Mutex<HashMap<String, Erc20TokenInfo>>>,
/// This spawner is used to spawn coin's related futures that should be aborted on coin deactivation
/// and on [`MmArc::stop`].
pub abortable_system: AbortableQueue,
}
#[derive(Clone, Debug)]
pub struct Web3Instance {
web3: Web3<Web3Transport>,
is_parity: bool,
}
#[derive(Clone, Debug)]
pub struct Erc20TokenInfo {
pub token_address: Address,
pub decimals: u8,
}
#[derive(Deserialize, Serialize)]
#[serde(tag = "format")]
pub enum EthAddressFormat {
/// Single-case address (lowercase)
#[serde(rename = "singlecase")]
SingleCase,
/// Mixed-case address.
/// https://eips.ethereum.org/EIPS/eip-55
#[serde(rename = "mixedcase")]
MixedCase,
}
#[cfg_attr(test, mockable)]
async fn make_gas_station_request(url: &str) -> GasStationResult {
let resp = slurp_url(url).await?;
if resp.0 != StatusCode::OK {
let error = format!("Gas price request failed with status code {}", resp.0);
return MmError::err(GasStationReqErr::Transport {
uri: url.to_owned(),
error,
});
}
let result: GasStationData = json::from_slice(&resp.2)?;
Ok(result)
}
impl EthCoinImpl {
/// Gets Transfer events from ERC20 smart contract `addr` between `from_block` and `to_block`
fn erc20_transfer_events(
&self,
contract: Address,
from_addr: Option<Address>,
to_addr: Option<Address>,
from_block: BlockNumber,
to_block: BlockNumber,
limit: Option<usize>,
) -> Box<dyn Future<Item = Vec<Log>, Error = String> + Send> {
let contract_event = try_fus!(ERC20_CONTRACT.event("Transfer"));
let topic0 = Some(vec![contract_event.signature()]);
let topic1 = from_addr.map(|addr| vec![addr.into()]);
let topic2 = to_addr.map(|addr| vec![addr.into()]);
let mut filter = FilterBuilder::default()
.topics(topic0, topic1, topic2, None)
.from_block(from_block)
.to_block(to_block)
.address(vec![contract]);
if let Some(l) = limit {
filter = filter.limit(l);
}
Box::new(
self.web3
.eth()
.logs(filter.build())
.compat()
.map_err(|e| ERRL!("{}", e)),
)
}
/// Gets ETH traces from ETH node between addresses in `from_block` and `to_block`
fn eth_traces(
&self,
from_addr: Vec<Address>,
to_addr: Vec<Address>,
from_block: BlockNumber,
to_block: BlockNumber,
limit: Option<usize>,
) -> Box<dyn Future<Item = Vec<Trace>, Error = String> + Send> {
let mut filter = TraceFilterBuilder::default()
.from_address(from_addr)
.to_address(to_addr)
.from_block(from_block)
.to_block(to_block);
if let Some(l) = limit {
filter = filter.count(l);
}
Box::new(
self.web3
.trace()
.filter(filter.build())
.compat()
.map_err(|e| ERRL!("{}", e)),
)
}
#[cfg(not(target_arch = "wasm32"))]
fn eth_traces_path(&self, ctx: &MmArc) -> PathBuf {
ctx.dbdir()
.join("TRANSACTIONS")
.join(format!("{}_{:#02x}_trace.json", self.ticker, self.my_address))
}
/// Load saved ETH traces from local DB
#[cfg(not(target_arch = "wasm32"))]
fn load_saved_traces(&self, ctx: &MmArc) -> Option<SavedTraces> {
let content = gstuff::slurp(&self.eth_traces_path(ctx));
if content.is_empty() {
None
} else {
match json::from_slice(&content) {
Ok(t) => Some(t),
Err(_) => None,
}
}
}
/// Load saved ETH traces from local DB
#[cfg(target_arch = "wasm32")]
fn load_saved_traces(&self, _ctx: &MmArc) -> Option<SavedTraces> {
common::panic_w("'load_saved_traces' is not implemented in WASM");
unreachable!()
}
/// Store ETH traces to local DB
#[cfg(not(target_arch = "wasm32"))]
fn store_eth_traces(&self, ctx: &MmArc, traces: &SavedTraces) {
let content = json::to_vec(traces).unwrap();
let tmp_file = format!("{}.tmp", self.eth_traces_path(ctx).display());
std::fs::write(&tmp_file, content).unwrap();
std::fs::rename(tmp_file, self.eth_traces_path(ctx)).unwrap();
}
/// Store ETH traces to local DB
#[cfg(target_arch = "wasm32")]
fn store_eth_traces(&self, _ctx: &MmArc, _traces: &SavedTraces) {
common::panic_w("'store_eth_traces' is not implemented in WASM");
unreachable!()
}
#[cfg(not(target_arch = "wasm32"))]
fn erc20_events_path(&self, ctx: &MmArc) -> PathBuf {
ctx.dbdir()
.join("TRANSACTIONS")
.join(format!("{}_{:#02x}_events.json", self.ticker, self.my_address))
}
/// Store ERC20 events to local DB
#[cfg(not(target_arch = "wasm32"))]
fn store_erc20_events(&self, ctx: &MmArc, events: &SavedErc20Events) {
let content = json::to_vec(events).unwrap();
let tmp_file = format!("{}.tmp", self.erc20_events_path(ctx).display());
std::fs::write(&tmp_file, content).unwrap();
std::fs::rename(tmp_file, self.erc20_events_path(ctx)).unwrap();
}
/// Store ERC20 events to local DB
#[cfg(target_arch = "wasm32")]
fn store_erc20_events(&self, _ctx: &MmArc, _events: &SavedErc20Events) {
common::panic_w("'store_erc20_events' is not implemented in WASM");
unreachable!()
}
/// Load saved ERC20 events from local DB
#[cfg(not(target_arch = "wasm32"))]
fn load_saved_erc20_events(&self, ctx: &MmArc) -> Option<SavedErc20Events> {
let content = gstuff::slurp(&self.erc20_events_path(ctx));
if content.is_empty() {
None
} else {
match json::from_slice(&content) {
Ok(t) => Some(t),
Err(_) => None,
}
}
}
/// Load saved ERC20 events from local DB
#[cfg(target_arch = "wasm32")]
fn load_saved_erc20_events(&self, _ctx: &MmArc) -> Option<SavedErc20Events> {
common::panic_w("'load_saved_erc20_events' is not implemented in WASM");
unreachable!()
}
/// The id used to differentiate payments on Etomic swap smart contract
fn etomic_swap_id(&self, time_lock: u32, secret_hash: &[u8]) -> Vec<u8> {
let mut input = vec![];
input.extend_from_slice(&time_lock.to_le_bytes());
input.extend_from_slice(secret_hash);
sha256(&input).to_vec()
}
/// Gets `SenderRefunded` events from etomic swap smart contract since `from_block`
fn refund_events(
&self,
swap_contract_address: Address,
from_block: u64,
to_block: u64,
) -> Box<dyn Future<Item = Vec<Log>, Error = String> + Send> {
let contract_event = try_fus!(SWAP_CONTRACT.event("SenderRefunded"));
let filter = FilterBuilder::default()
.topics(Some(vec![contract_event.signature()]), None, None, None)
.from_block(BlockNumber::Number(from_block.into()))
.to_block(BlockNumber::Number(to_block.into()))
.address(vec![swap_contract_address])
.build();
Box::new(self.web3.eth().logs(filter).compat().map_err(|e| ERRL!("{}", e)))
}
/// Try to parse address from string.
pub fn address_from_str(&self, address: &str) -> Result<Address, String> {
Ok(try_s!(valid_addr_from_str(address)))
}
pub fn erc20_token_address(&self) -> Option<Address> {
match self.coin_type {
EthCoinType::Erc20 { token_addr, .. } => Some(token_addr),
EthCoinType::Eth => None,
}
}
pub fn add_erc_token_info(&self, ticker: String, info: Erc20TokenInfo) {
self.erc20_tokens_infos.lock().unwrap().insert(ticker, info);
}
/// # Warning
/// Be very careful using this function since it returns dereferenced clone
/// of value behind the MutexGuard and makes it non-thread-safe.
pub fn get_erc_tokens_infos(&self) -> HashMap<String, Erc20TokenInfo> {
let guard = self.erc20_tokens_infos.lock().unwrap();
(*guard).clone()
}
}
async fn get_raw_transaction_impl(coin: EthCoin, req: RawTransactionRequest) -> RawTransactionResult {
let tx = match req.tx_hash.strip_prefix("0x") {
Some(tx) => tx,
None => &req.tx_hash,
};
let hash = H256::from_str(tx).map_to_mm(|e| RawTransactionError::InvalidHashError(e.to_string()))?;
get_tx_hex_by_hash_impl(coin, hash).await
}
async fn get_tx_hex_by_hash_impl(coin: EthCoin, tx_hash: H256) -> RawTransactionResult {
let web3_tx = coin
.web3
.eth()
.transaction(TransactionId::Hash(tx_hash))
.await?
.or_mm_err(|| RawTransactionError::HashNotExist(tx_hash.to_string()))?;
let raw = signed_tx_from_web3_tx(web3_tx).map_to_mm(RawTransactionError::InternalError)?;
Ok(RawTransactionRes {
tx_hex: BytesJson(rlp::encode(&raw).to_vec()),
})
}
async fn withdraw_impl(coin: EthCoin, req: WithdrawRequest) -> WithdrawResult {
let to_addr = coin
.address_from_str(&req.to)
.map_to_mm(WithdrawError::InvalidAddress)?;
let (my_balance, my_address, key_pair) = match req.from {
Some(WithdrawFrom::HDWalletAddress(ref path_to_address)) => {
let raw_priv_key = coin
.priv_key_policy
.hd_wallet_derived_priv_key_or_err(path_to_address)?;
let key_pair = KeyPair::from_secret_slice(raw_priv_key.as_slice())
.map_to_mm(|e| WithdrawError::InternalError(e.to_string()))?;
let address = key_pair.address();
let balance = coin.address_balance(address).compat().await?;
(balance, address, key_pair)
},
Some(WithdrawFrom::AddressId(_)) | Some(WithdrawFrom::DerivationPath { .. }) => {
return MmError::err(WithdrawError::UnexpectedFromAddress(
"Withdraw from 'AddressId' or 'DerivationPath' is not supported yet for EVM!".to_string(),
))
},
None => (
coin.my_balance().compat().await?,
coin.my_address,
coin.priv_key_policy.activated_key_or_err()?.clone(),
),
};
let my_balance_dec = u256_to_big_decimal(my_balance, coin.decimals)?;
let (mut wei_amount, dec_amount) = if req.max {
(my_balance, my_balance_dec.clone())
} else {
let wei_amount = wei_from_big_decimal(&req.amount, coin.decimals)?;
(wei_amount, req.amount.clone())
};
if wei_amount > my_balance {
return MmError::err(WithdrawError::NotSufficientBalance {
coin: coin.ticker.clone(),
available: my_balance_dec.clone(),
required: dec_amount,
});
};
let (mut eth_value, data, call_addr, fee_coin) = match &coin.coin_type {
EthCoinType::Eth => (wei_amount, vec![], to_addr, coin.ticker()),
EthCoinType::Erc20 { platform, token_addr } => {
let function = ERC20_CONTRACT.function("transfer")?;
let data = function.encode_input(&[Token::Address(to_addr), Token::Uint(wei_amount)])?;
(0.into(), data, *token_addr, platform.as_str())
},
};
let eth_value_dec = u256_to_big_decimal(eth_value, coin.decimals)?;
let (gas, gas_price) =
get_eth_gas_details(&coin, req.fee, eth_value, data.clone().into(), call_addr, req.max).await?;
let total_fee = gas * gas_price;
let total_fee_dec = u256_to_big_decimal(total_fee, coin.decimals)?;
if req.max && coin.coin_type == EthCoinType::Eth {
if eth_value < total_fee || wei_amount < total_fee {
return MmError::err(WithdrawError::AmountTooLow {
amount: eth_value_dec,
threshold: total_fee_dec,
});
}
eth_value -= total_fee;
wei_amount -= total_fee;
};
let (tx_hash, tx_hex) = match coin.priv_key_policy {
EthPrivKeyPolicy::Iguana(_) | EthPrivKeyPolicy::HDWallet { .. } => {
// Todo: nonce_lock is still global for all addresses but this needs to be per address
let _nonce_lock = coin.nonce_lock.lock().await;
let (nonce, _) = get_addr_nonce(my_address, coin.web3_instances.clone())
.compat()
.timeout_secs(30.)
.await?
.map_to_mm(WithdrawError::Transport)?;
let tx = UnSignedEthTx {
nonce,
value: eth_value,
action: Action::Call(call_addr),
data,
gas,
gas_price,
};
let signed = tx.sign(key_pair.secret(), coin.chain_id);
let bytes = rlp::encode(&signed);
(signed.hash, BytesJson::from(bytes.to_vec()))
},
EthPrivKeyPolicy::Trezor => {
return MmError::err(WithdrawError::UnsupportedError(
"Trezor is not supported for EVM yet!".to_string(),
))
},
#[cfg(target_arch = "wasm32")]
EthPrivKeyPolicy::Metamask(_) => {
if !req.broadcast {
let error = "Set 'broadcast' to generate, sign and broadcast a transaction with MetaMask".to_string();
return MmError::err(WithdrawError::BroadcastExpected(error));
}
let tx_to_send = TransactionRequest {
from: coin.my_address,
to: Some(to_addr),
gas: Some(gas),
gas_price: Some(gas_price),
value: Some(eth_value),
data: Some(data.clone().into()),
nonce: None,
..TransactionRequest::default()
};
// Wait for 10 seconds for the transaction to appear on the RPC node.
let wait_rpc_timeout = 10_000;
let check_every = 1.;
// Please note that this method may take a long time
// due to `wallet_switchEthereumChain` and `eth_sendTransaction` requests.
let tx_hash = coin.web3.eth().send_transaction(tx_to_send).await?;
let signed_tx = coin
.wait_for_tx_appears_on_rpc(tx_hash, wait_rpc_timeout, check_every)
.await?;
let tx_hex = signed_tx
.map(|tx| BytesJson::from(rlp::encode(&tx).to_vec()))
// Return an empty `tx_hex` if the transaction is still not appeared on the RPC node.
.unwrap_or_default();
(tx_hash, tx_hex)
},
};
let tx_hash_bytes = BytesJson::from(tx_hash.0.to_vec());
let tx_hash_str = format!("{:02x}", tx_hash_bytes);
let amount_decimal = u256_to_big_decimal(wei_amount, coin.decimals)?;
let mut spent_by_me = amount_decimal.clone();
let received_by_me = if to_addr == my_address {
amount_decimal.clone()
} else {
0.into()
};
let fee_details = EthTxFeeDetails::new(gas, gas_price, fee_coin)?;
if coin.coin_type == EthCoinType::Eth {
spent_by_me += &fee_details.total_fee;
}
Ok(TransactionDetails {
to: vec![checksum_address(&format!("{:#02x}", to_addr))],
from: vec![checksum_address(&format!("{:#02x}", my_address))],
total_amount: amount_decimal,
my_balance_change: &received_by_me - &spent_by_me,
spent_by_me,
received_by_me,
tx_hex,
tx_hash: tx_hash_str,
block_height: 0,
fee_details: Some(fee_details.into()),
coin: coin.ticker.clone(),
internal_id: vec![].into(),
timestamp: now_sec(),
kmd_rewards: None,
transaction_type: Default::default(),
memo: None,
})
}
/// `withdraw_erc1155` function returns details of `ERC-1155` transaction including tx hex,
/// which should be sent to`send_raw_transaction` RPC to broadcast the transaction.
pub async fn withdraw_erc1155(ctx: MmArc, withdraw_type: WithdrawErc1155) -> WithdrawNftResult {
let coin = lp_coinfind_or_err(&ctx, withdraw_type.chain.to_ticker()).await?;
let (to_addr, token_addr, eth_coin) =
get_valid_nft_add_to_withdraw(coin, &withdraw_type.to, &withdraw_type.token_address)?;
let my_address = eth_coin.my_address()?;
let wallet_amount = find_wallet_nft_amount(
&ctx,
&withdraw_type.chain,
withdraw_type.token_address.to_lowercase(),
withdraw_type.token_id.clone(),
)
.await?;
let amount_dec = if withdraw_type.max {
wallet_amount.clone()
} else {
withdraw_type.amount.unwrap_or_else(|| 1.into())
};
if amount_dec > wallet_amount {
return MmError::err(WithdrawError::NotEnoughNftsAmount {
token_address: withdraw_type.token_address,
token_id: withdraw_type.token_id.to_string(),
available: wallet_amount,
required: amount_dec,
});
}
let (eth_value, data, call_addr, fee_coin) = match eth_coin.coin_type {
EthCoinType::Eth => {
let function = ERC1155_CONTRACT.function("safeTransferFrom")?;
let token_id_u256 = U256::from_dec_str(&withdraw_type.token_id.to_string())
.map_err(|e| format!("{:?}", e))
.map_to_mm(NumConversError::new)?;
let amount_u256 = U256::from_dec_str(&amount_dec.to_string())
.map_err(|e| format!("{:?}", e))
.map_to_mm(NumConversError::new)?;
let data = function.encode_input(&[
Token::Address(eth_coin.my_address),
Token::Address(to_addr),
Token::Uint(token_id_u256),
Token::Uint(amount_u256),
Token::Bytes("0x".into()),
])?;
(0.into(), data, token_addr, eth_coin.ticker())
},
EthCoinType::Erc20 { .. } => {
return MmError::err(WithdrawError::InternalError(
"Erc20 coin type doesnt support withdraw nft".to_owned(),
))
},
};
let (gas, gas_price) = get_eth_gas_details(
ð_coin,
withdraw_type.fee,
eth_value,
data.clone().into(),
call_addr,
false,
)
.await?;
let _nonce_lock = eth_coin.nonce_lock.lock().await;
let (nonce, _) = get_addr_nonce(eth_coin.my_address, eth_coin.web3_instances.clone())
.compat()
.timeout_secs(30.)
.await?
.map_to_mm(WithdrawError::Transport)?;
let tx = UnSignedEthTx {
nonce,
value: eth_value,
action: Action::Call(call_addr),
data,
gas,
gas_price,
};
let secret = eth_coin.priv_key_policy.activated_key_or_err()?.secret();
let signed = tx.sign(secret, eth_coin.chain_id);
let signed_bytes = rlp::encode(&signed);
let fee_details = EthTxFeeDetails::new(gas, gas_price, fee_coin)?;
Ok(TransactionNftDetails {
tx_hex: BytesJson::from(signed_bytes.to_vec()),
tx_hash: format!("{:02x}", signed.tx_hash()),
from: vec![my_address],
to: vec![withdraw_type.to],
contract_type: ContractType::Erc1155,
token_address: withdraw_type.token_address,
token_id: withdraw_type.token_id,
amount: amount_dec,
fee_details: Some(fee_details.into()),
coin: eth_coin.ticker.clone(),
block_height: 0,
timestamp: now_sec(),
internal_id: 0,
transaction_type: TransactionType::NftTransfer,
})
}
/// `withdraw_erc721` function returns details of `ERC-721` transaction including tx hex,
/// which should be sent to`send_raw_transaction` RPC to broadcast the transaction.
pub async fn withdraw_erc721(ctx: MmArc, withdraw_type: WithdrawErc721) -> WithdrawNftResult {
let coin = lp_coinfind_or_err(&ctx, withdraw_type.chain.to_ticker()).await?;
let (to_addr, token_addr, eth_coin) =
get_valid_nft_add_to_withdraw(coin, &withdraw_type.to, &withdraw_type.token_address)?;
let my_address = eth_coin.my_address()?;
let (eth_value, data, call_addr, fee_coin) = match eth_coin.coin_type {
EthCoinType::Eth => {
let function = ERC721_CONTRACT.function("safeTransferFrom")?;
let token_id_u256 = U256::from_dec_str(&withdraw_type.token_id.to_string())
.map_err(|e| format!("{:?}", e))
.map_to_mm(NumConversError::new)?;
let data = function.encode_input(&[
Token::Address(eth_coin.my_address),
Token::Address(to_addr),
Token::Uint(token_id_u256),
])?;
(0.into(), data, token_addr, eth_coin.ticker())
},
EthCoinType::Erc20 { .. } => {