Address Contract Partially Verified
Address
0x71956340a586db3afD10C2645Dbe8d065dD79AC8
Balance
0 ETH
Nonce
191
Code Size
10438 bytes
Creator
0x19f5911E...18BB at tx 0x3d47fc40...18e7a6
Indexed Transactions
0
Contract Bytecode
10438 bytes
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Verified Source Code Partial Match
Compiler: v0.3.10+commit.91361694
Compass.vy 452 lines
#pragma version 0.3.10
#pragma optimize gas
#pragma evm-version shanghai
"""
@title Compass
@license Apache 2.0
@author Volume.Finance
@notice v2.0.1
"""
MAX_VALIDATORS: constant(uint256) = 200
MAX_PAYLOAD: constant(uint256) = 10240
MAX_EVENT: constant(uint256) = 1024
MAX_BATCH: constant(uint256) = 64
POWER_THRESHOLD: constant(uint256) = 2_863_311_530 # 2/3 of 2^32, Validator powers will be normalized to sum to 2 ^ 32 in every valset update.
compass_id: public(immutable(bytes32))
interface ERC20:
def balanceOf(_owner: address) -> uint256: view
def transfer(_to: address, _value: uint256) -> bool: nonpayable
def transferFrom(_from: address, _to: address, _value: uint256) -> bool: nonpayable
interface FeeManager:
def deposit(depositor_paloma_address: bytes32): payable
def withdraw(receiver: address, amount:uint256, dex: address, payload: Bytes[1028], min_grain: uint256): nonpayable
def transfer_fees(fee_args: FeeArgs, relayer: address): nonpayable
def security_fee_topup(): payable
def reserve_security_fee(sender: address, gas_fee_amount: uint256): nonpayable
def bridge_community_fee_to_paloma(amount: uint256, dex: address, payload: Bytes[1028], min_grain: uint256) -> (address, uint256): nonpayable
def update_compass(_new_compass: address): nonpayable
interface Compass:
def FEE_MANAGER() -> address: view
interface Deployer:
def deployFromBytecode(_bytecode: Bytes[24576]) -> address: nonpayable
struct Valset:
validators: DynArray[address, MAX_VALIDATORS] # Validator addresses
powers: DynArray[uint256, MAX_VALIDATORS] # Powers of given validators, in the same order as validators array
valset_id: uint256 # nonce of this validator set
struct Signature:
v: uint256
r: uint256
s: uint256
struct Consensus:
valset: Valset # Valset data
signatures: DynArray[Signature, MAX_VALIDATORS] # signatures in the same order as validator array in valset
struct LogicCallArgs:
logic_contract_address: address # the arbitrary contract address to external call
payload: Bytes[MAX_PAYLOAD] # payloads
struct TokenSendArgs:
receiver: DynArray[address, MAX_BATCH]
amount: DynArray[uint256, MAX_BATCH]
struct FeeArgs:
relayer_fee: uint256 # Total amount to alot for relayer
community_fee: uint256 # Total amount to alot for community wallet
security_fee: uint256 # Total amount to alot for security wallet
fee_payer_paloma_address: bytes32 # Paloma address covering the fees
event ValsetUpdated:
checkpoint: bytes32
valset_id: uint256
event_id: uint256
event LogicCallEvent:
logic_contract_address: address
payload: Bytes[MAX_PAYLOAD]
message_id: uint256
event_id: uint256
event SendToPalomaEvent:
token: address
sender: address
receiver: bytes32
amount: uint256
nonce: uint256
event_id: uint256
event BatchSendEvent:
token: address
batch_id: uint256
nonce: uint256
event_id: uint256
event ERC20DeployedEvent:
paloma_denom: String[128]
token_contract: address
name: String[64]
symbol: String[32]
decimals: uint8
event_id: uint256
event FundsDepositedEvent:
depositor_paloma_address: bytes32
sender: address
amount: uint256
event FundsWithdrawnEvent:
receiver: address
amount: uint256
event UpdateCompass:
contract_address: address
payload: Bytes[MAX_PAYLOAD]
event_id: uint256
event NodeSaleEvent:
contract_address: address
buyer: address
paloma: bytes32
node_count: uint256
grain_amount: uint256
nonce: uint256
event_id: uint256
event ContractDeployed:
child: address
deployer: address
event_id: uint256
last_checkpoint: public(bytes32)
last_valset_id: public(uint256)
last_event_id: public(uint256)
last_gravity_nonce: public(uint256)
last_batch_id: public(HashMap[address, uint256])
message_id_used: public(HashMap[uint256, bool])
slc_switch: public(bool)
FEE_MANAGER: public(immutable(address))
# compass_id: unique identifier for compass instance
# valset: initial validator set
@external
def __init__(_compass_id: bytes32, _event_id: uint256, _gravity_nonce:uint256, valset: Valset, fee_manager: address):
compass_id = _compass_id
cumulative_power: uint256 = 0
i: uint256 = 0
# check cumulative power is enough
for validator in valset.validators:
cumulative_power += valset.powers[i]
if cumulative_power >= POWER_THRESHOLD:
break
i = unsafe_add(i, 1)
self.power_check(cumulative_power)
new_checkpoint: bytes32 = keccak256(_abi_encode(valset.validators, valset.powers, valset.valset_id, compass_id, method_id=method_id("checkpoint(address[],uint256[],uint256,bytes32)")))
self.last_checkpoint = new_checkpoint
self.last_valset_id = valset.valset_id
self.last_event_id = _event_id
self.last_gravity_nonce = _gravity_nonce
FEE_MANAGER = fee_manager
log ValsetUpdated(new_checkpoint, valset.valset_id, _event_id)
# check if cumulated power is enough
@internal
def power_check(cumulative_power: uint256):
assert cumulative_power >= POWER_THRESHOLD, "Insufficient Power"
# utility function to verify EIP712 signature
@internal
@pure
def verify_signature(signer: address, hash: bytes32, sig: Signature) -> bool:
message_digest: bytes32 = keccak256(concat(convert("\x19Ethereum Signed Message:\n32", Bytes[28]), hash))
return signer == ecrecover(message_digest, sig.v, sig.r, sig.s)
# consensus: validator set and signatures
# hash: what we are checking they have signed
@internal
def check_validator_signatures(consensus: Consensus, hash: bytes32):
i: uint256 = 0
cumulative_power: uint256 = 0
for sig in consensus.signatures:
if sig.v != 0:
assert self.verify_signature(consensus.valset.validators[i], hash, sig), "Invalid Signature"
cumulative_power += consensus.valset.powers[i]
if cumulative_power >= POWER_THRESHOLD:
break
i = unsafe_add(i, 1)
self.power_check(cumulative_power)
# Make a new checkpoint from the supplied validator set
# A checkpoint is a hash of all relevant information about the valset. This is stored by the contract,
# instead of storing the information directly. This saves on storage and gas.
# The format of the checkpoint is:
# keccak256 hash of abi_encoded checkpoint(validators[], powers[], valset_id, compass_id)
# The validator powers must be decreasing or equal. This is important for checking the signatures on the
# next valset, since it allows the caller to stop verifying signatures once a quorum of signatures have been verified.
@internal
@view
def make_checkpoint(valset: Valset) -> bytes32:
return keccak256(_abi_encode(valset.validators, valset.powers, valset.valset_id, compass_id, method_id=method_id("checkpoint(address[],uint256[],uint256,bytes32)")))
# check if the gas estimate is too big
@internal
def gas_check(gas_estimate: uint256):
assert msg.gas >= gas_estimate, "Insufficient funds to cover gas estimate"
@internal
def deadline_check(deadline: uint256):
assert block.timestamp <= deadline, "Timeout"
@internal
def reserve_security_fee(relayer: address, gas_estimate: uint256):
self.gas_check(gas_estimate)
FeeManager(FEE_MANAGER).reserve_security_fee(relayer, gas_estimate)
@internal
def check_checkpoint(checkpoint: bytes32):
assert self.last_checkpoint == checkpoint, "Incorrect Checkpoint"
# This updates the valset by checking that the validators in the current valset have signed off on the
# new valset. The signatures supplied are the signatures of the current valset over the checkpoint hash
# generated from the new valset.
# Anyone can call this function, but they must supply valid signatures of constant_powerThreshold of the current valset over
# the new valset.
# valset: new validator set to update with
# consensus: current validator set and signatures
@external
def update_valset(consensus: Consensus, new_valset: Valset, relayer: address, gas_estimate: uint256):
self.reserve_security_fee(relayer, gas_estimate)
# check if new valset_id is greater than current valset_id
assert new_valset.valset_id > consensus.valset.valset_id, "Invalid Valset ID"
cumulative_power: uint256 = 0
i: uint256 = 0
# check cumulative power is enough
for validator in new_valset.validators:
cumulative_power += new_valset.powers[i]
if cumulative_power >= POWER_THRESHOLD:
break
i = unsafe_add(i, 1)
self.power_check(cumulative_power)
# check if the supplied current validator set matches the saved checkpoint
self.check_checkpoint(self.make_checkpoint(consensus.valset))
# calculate the new checkpoint
new_checkpoint: bytes32 = self.make_checkpoint(new_valset)
args_hash: bytes32 = keccak256(_abi_encode(new_checkpoint, relayer, gas_estimate, method_id=method_id("update_valset(bytes32,address,uint256)")))
# check if enough validators signed new validator set (new checkpoint)
self.check_validator_signatures(consensus, args_hash)
self.last_checkpoint = new_checkpoint
self.last_valset_id = new_valset.valset_id
event_id: uint256 = unsafe_add(self.last_event_id, 1)
self.last_event_id = event_id
log ValsetUpdated(new_checkpoint, new_valset.valset_id, event_id)
# This makes calls to contracts that execute arbitrary logic
# message_id is to prevent replay attack and every message_id can be used only once
@external
def submit_logic_call(consensus: Consensus, args: LogicCallArgs, fee_args: FeeArgs, message_id: uint256, deadline: uint256, relayer: address):
FeeManager(FEE_MANAGER).transfer_fees(fee_args, relayer)
self.deadline_check(deadline)
assert not self.message_id_used[message_id], "Used Message_ID"
self.message_id_used[message_id] = True
# check if the supplied current validator set matches the saved checkpoint
self.check_checkpoint(self.make_checkpoint(consensus.valset))
# signing data is keccak256 hash of abi_encoded logic_call(args, fee_args, message_id, compass_id, deadline, relayer)
args_hash: bytes32 = keccak256(_abi_encode(args, fee_args, message_id, compass_id, deadline, relayer, method_id=method_id("logic_call((address,bytes),(uint256,uint256,uint256,bytes32),uint256,bytes32,uint256,address)")))
# check if enough validators signed args_hash
self.check_validator_signatures(consensus, args_hash)
# make call to logic contract
self.slc_switch = True
raw_call(args.logic_contract_address, args.payload)
self.slc_switch = False
event_id: uint256 = unsafe_add(self.last_event_id, 1)
self.last_event_id = event_id
log LogicCallEvent(args.logic_contract_address, args.payload, message_id, event_id)
@internal
def _send_token_to_paloma(token: address, receiver: bytes32, amount: uint256):
_nonce: uint256 = unsafe_add(self.last_gravity_nonce, 1)
self.last_gravity_nonce = _nonce
_event_id: uint256 = unsafe_add(self.last_event_id, 1)
self.last_event_id = _event_id
log SendToPalomaEvent(token, msg.sender, receiver, amount, _nonce, _event_id)
@external
def send_token_to_paloma(token: address, receiver: bytes32, amount: uint256):
_balance: uint256 = ERC20(token).balanceOf(self)
assert ERC20(token).transferFrom(msg.sender, self, amount, default_return_value=True), "failed TransferFrom"
_balance = ERC20(token).balanceOf(self) - _balance
self._send_token_to_paloma(token, receiver, _balance)
@external
def submit_batch(consensus: Consensus, token: address, args: TokenSendArgs, batch_id: uint256, deadline: uint256, relayer: address, gas_estimate: uint256):
self.reserve_security_fee(relayer, gas_estimate)
self.deadline_check(deadline)
assert self.last_batch_id[token] < batch_id, "Wrong batch id"
length: uint256 = len(args.receiver)
assert length == len(args.amount), "Unmatched Params"
# check if the supplied current validator set matches the saved checkpoint
self.check_checkpoint(self.make_checkpoint(consensus.valset))
# signing data is keccak256 hash of abi_encoded batch_call(args, batch_id, compass_id, deadline, relayer, gas_estimate)
args_hash: bytes32 = keccak256(_abi_encode(token, args, batch_id, compass_id, deadline, relayer, gas_estimate, method_id=method_id("batch_call(address,(address[],uint256[]),uint256,bytes32,uint256,address,uint256)")))
# check if enough validators signed args_hash
self.check_validator_signatures(consensus, args_hash)
# make call to logic contract
for i in range(MAX_BATCH):
if i >= length:
break
assert ERC20(token).transfer(args.receiver[i], args.amount[i], default_return_value=True), "failed transfer"
_nonce: uint256 = unsafe_add(self.last_gravity_nonce, 1)
self.last_gravity_nonce = _nonce
_event_id: uint256 = unsafe_add(self.last_event_id, 1)
self.last_event_id = _event_id
self.last_batch_id[token] = batch_id
log BatchSendEvent(token, batch_id, _nonce, _event_id)
@external
def emit_nodesale_event(buyer: address, paloma: bytes32, node_count: uint256, grain_amount: uint256):
event_id: uint256 = unsafe_add(self.last_event_id, 1)
self.last_event_id = event_id
_nonce: uint256 = unsafe_add(self.last_gravity_nonce, 1)
self.last_gravity_nonce = _nonce
log NodeSaleEvent(msg.sender, buyer, paloma, node_count, grain_amount, _nonce, event_id)
@external
def deploy_erc20(_paloma_denom: String[128], _name: String[64], _symbol: String[32], _decimals: uint8, _blueprint: address):
assert msg.sender == self, "Invalid"
erc20: address = create_from_blueprint(_blueprint, self, _name, _symbol, _decimals, code_offset=3)
event_id: uint256 = unsafe_add(self.last_event_id, 1)
self.last_event_id = event_id
log ERC20DeployedEvent(_paloma_denom, erc20, _name, _symbol, _decimals, event_id)
@external
@view
def arbitrary_view(contract_address: address, payload: Bytes[1024]) -> Bytes[1024]:
return raw_call(contract_address, payload, is_static_call=True, max_outsize=1024)
# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
# F E E S
# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
# Deposit some balance on the contract to be used when sending messages from Paloma.
# depositor_paloma_address: paloma address to which to attribute the sent amount
# amount: amount of COIN to register with compass. Overpaid balance will be sent back.
@external
@payable
@nonreentrant('lock')
def deposit(depositor_paloma_address: bytes32, amount: uint256):
if msg.value > amount:
send(msg.sender, unsafe_sub(msg.value, amount))
else:
assert amount == msg.value, "Insufficient deposit"
FeeManager(FEE_MANAGER).deposit(depositor_paloma_address, value=amount)
log FundsDepositedEvent(depositor_paloma_address, msg.sender, amount)
# Withdraw ramped up claimable rewards from compass. Withdrawals will be swapped and
# reimbursed in GRAIN.
# amount: the amount of COIN to withdraw.
# dex: address of the DEX to use for exchanging the token
# payload: the function payload to exchange ETH to grain for the dex
# min_grain: expected grain amount getting from dex to prevent front-running(high slippage / sandwich attack)
@external
def withdraw(amount:uint256, dex: address, payload: Bytes[1028], min_grain: uint256):
FeeManager(FEE_MANAGER).withdraw(msg.sender, amount, dex, payload, min_grain)
log FundsWithdrawnEvent(msg.sender, amount)
# Top up the security funds on the contract used to reimburse all infrastructure
# related messages. All sent value will be consumed.
@external
@payable
@nonreentrant('lock')
def security_fee_topup(amount: uint256):
if msg.value > amount:
send(msg.sender, unsafe_sub(msg.value, amount))
else:
assert amount == msg.value, "Insufficient deposit"
# Make sure we check against overflow here
FeeManager(FEE_MANAGER).security_fee_topup(value=amount)
# Bridge the current balance of the community funds back to Paloma
# consensus: current validator set and signatures
# message_id: incremental unused message ID
# deadline: message deadline
# receiver: Paloma address to receive the funds
# relayer: relayer address
# gas_estimate: gas amount estimation
# amount: Ete amount to swap and bridge
# dex: address of the DEX to use for exchanging the Eth
# payload: the function payload to exchange ETH to grain for the dex
# min_grain: expected grain amount getting from dex to prevent front-running(high slippage / sandwich attack)
@external
@nonreentrant('lock')
def bridge_community_tax_to_paloma(consensus: Consensus, message_id: uint256, deadline: uint256, receiver: bytes32, relayer: address, gas_estimate: uint256, amount:uint256, dex: address, payload: Bytes[1028], min_grain: uint256):
self.reserve_security_fee(relayer, gas_estimate)
self.deadline_check(deadline)
assert not self.message_id_used[message_id], "Used Message_ID"
self.message_id_used[message_id] = True
# check if the supplied current validator set matches the saved checkpoint
self.check_checkpoint(self.make_checkpoint(consensus.valset))
# signing data is keccak256 hash of abi_encoded logic_call(args, message_id, compass_id, deadline)
args_hash: bytes32 = keccak256(_abi_encode(message_id, deadline, receiver, relayer, gas_estimate, amount, dex, payload, min_grain, method_id=method_id("bridge_community_tax_to_paloma(uint256,uint256,byte32,address,uint256,uint256,address,bytes,uint256)")))
# check if enough validators signed args_hash
self.check_validator_signatures(consensus, args_hash)
grain: address = empty(address)
grain_balance: uint256 = 0
grain, grain_balance = FeeManager(FEE_MANAGER).bridge_community_fee_to_paloma(amount, dex, payload, min_grain)
self._send_token_to_paloma(grain, receiver, grain_balance)
# This function is to update compass address in contracts. After running this function, This Compass-evm can't be used anymore.
# consensus: current validator set and signatures
# update_compass_args: array of LogicCallArgs to update compass address in contracts
# deadline: message deadline
# gas_estimate: gas amount estimation
# relayer: relayer address
@external
def compass_update_batch(consensus: Consensus, update_compass_args: DynArray[LogicCallArgs, MAX_BATCH], deadline: uint256, gas_estimate: uint256, relayer: address):
self.reserve_security_fee(relayer, gas_estimate)
self.deadline_check(deadline)
# check if the supplied current validator set matches the saved checkpoint
self.check_checkpoint(self.make_checkpoint(consensus.valset))
# signing data is keccak256 hash of abi_encoded logic_call(args, message_id, compass_id, deadline)
args_hash: bytes32 = keccak256(_abi_encode(update_compass_args, deadline, relayer, gas_estimate, method_id=method_id("compass_update_batch((address,bytes)[],uint256,address,uint256)")))
# check if enough validators signed args_hash
self.check_validator_signatures(consensus, args_hash)
event_id: uint256 = unsafe_add(self.last_event_id, 1)
for i in range(MAX_BATCH):
if i >= len(update_compass_args):
break
raw_call(update_compass_args[i].logic_contract_address, update_compass_args[i].payload)
event_id = unsafe_add(event_id, 1)
log UpdateCompass(update_compass_args[0].logic_contract_address, update_compass_args[0].payload, event_id)
self.last_event_id = event_id
@external
def deploy_contract(consensus: Consensus, _deployer: address, _bytecode: Bytes[24576], fee_args: FeeArgs, message_id: uint256, deadline: uint256, relayer: address):
FeeManager(FEE_MANAGER).transfer_fees(fee_args, relayer)
self.deadline_check(deadline)
assert not self.message_id_used[message_id], "Used Message_ID"
self.message_id_used[message_id] = True
# check if the supplied current validator set matches the saved checkpoint
self.check_checkpoint(self.make_checkpoint(consensus.valset))
# signing data is keccak256 hash of abi_encoded deploy_contract(bytecode, fee_args, message_id, compass_id, deadline, relayer)
args_hash: bytes32 = keccak256(_abi_encode(_deployer, _bytecode, fee_args, message_id, compass_id, deadline, relayer, method_id=method_id("deploy_contract(address,bytes,(uint256,uint256,uint256,bytes32),uint256,bytes32,uint256,address)")))
# check if enough validators signed args_hash
self.check_validator_signatures(consensus, args_hash)
# make call to logic contract
event_id: uint256 = unsafe_add(self.last_event_id, 1)
child: address = Deployer(_deployer).deployFromBytecode(_bytecode)
self.last_event_id = event_id
log ContractDeployed(child, _deployer, event_id)
Read Contract
FEE_MANAGER 0xea26266c → address
arbitrary_view 0x0b14c545 → bytes
compass_id 0x84d38f2c → bytes32
last_batch_id 0xfa822567 → uint256
last_checkpoint 0xa9a4a983 → bytes32
last_event_id 0x19429b8d → uint256
last_gravity_nonce 0x0cb39e96 → uint256
last_valset_id 0x4da6ecc9 → uint256
message_id_used 0x38d6172d → bool
slc_switch 0x844105e1 → bool
Write Contract 12 functions
These functions modify contract state and require a wallet transaction to execute.
bridge_community_tax_to_paloma 0x72e2159b
tuple consensus
uint256 message_id
uint256 deadline
bytes32 receiver
address relayer
uint256 gas_estimate
uint256 amount
address dex
bytes payload
uint256 min_grain
compass_update_batch 0x6d41a641
tuple consensus
tuple[] update_compass_args
uint256 deadline
uint256 gas_estimate
address relayer
deploy_contract 0xbae7880b
tuple consensus
address _deployer
bytes _bytecode
tuple fee_args
uint256 message_id
uint256 deadline
address relayer
deploy_erc20 0x08a92ad7
string _paloma_denom
string _name
string _symbol
uint8 _decimals
address _blueprint
deposit 0x1de26e16
bytes32 depositor_paloma_address
uint256 amount
emit_nodesale_event 0xa3299771
address buyer
bytes32 paloma
uint256 node_count
uint256 grain_amount
security_fee_topup 0xda29a8c6
uint256 amount
send_token_to_paloma 0xf650f6e9
address token
bytes32 receiver
uint256 amount
submit_batch 0x5200b4c5
tuple consensus
address token
tuple args
uint256 batch_id
uint256 deadline
address relayer
uint256 gas_estimate
submit_logic_call 0x54ad74df
tuple consensus
tuple args
tuple fee_args
uint256 message_id
uint256 deadline
address relayer
update_valset 0x21620d08
tuple consensus
tuple new_valset
address relayer
uint256 gas_estimate
withdraw 0x048a245d
uint256 amount
address dex
bytes payload
uint256 min_grain
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