BaseXVSProxyOFT

The BaseXVSProxyOFT contract is tailored for facilitating cross-chain transactions with an ERC20 token. It manages transaction limits of a single and daily transactions. This contract inherits key functionalities from other contracts, including pausing capabilities and error handling. It holds state variables for the inner token and maps for tracking transaction limits and statistics across various chains and addresses. The contract allows the owner to configure limits, set whitelists, and control pausing. Internal functions conduct eligibility check of transactions, making the contract a fundamental component for cross-chain token management.

Solidity API

oracle

The address of ResilientOracle contract wrapped in its interface.

contract ResilientOracleInterface oracle

chainIdToMaxSingleTransactionLimit

Maximum limit for a single transaction in USD(scaled with 18 decimals) from local chain.

mapping(uint16 => uint256) chainIdToMaxSingleTransactionLimit

chainIdToMaxDailyLimit

Maximum daily limit for transactions in USD(scaled with 18 decimals) from local chain.

mapping(uint16 => uint256) chainIdToMaxDailyLimit

chainIdToLast24HourTransferred

Total sent amount in USD(scaled with 18 decimals) within the last 24-hour window from local chain.

mapping(uint16 => uint256) chainIdToLast24HourTransferred

chainIdToLast24HourWindowStart

Timestamp when the last 24-hour window started from local chain.

mapping(uint16 => uint256) chainIdToLast24HourWindowStart

chainIdToMaxSingleReceiveTransactionLimit

Maximum limit for a single receive transaction in USD(scaled with 18 decimals) from remote chain.

mapping(uint16 => uint256) chainIdToMaxSingleReceiveTransactionLimit

chainIdToMaxDailyReceiveLimit

Maximum daily limit for receiving transactions in USD(scaled with 18 decimals) from remote chain.

mapping(uint16 => uint256) chainIdToMaxDailyReceiveLimit

chainIdToLast24HourReceived

Total received amount in USD(scaled with 18 decimals) within the last 24-hour window from remote chain.

mapping(uint16 => uint256) chainIdToLast24HourReceived

chainIdToLast24HourReceiveWindowStart

Timestamp when the last 24-hour window started from remote chain.

mapping(uint16 => uint256) chainIdToLast24HourReceiveWindowStart

whitelist

Address on which cap check and bound limit is not applicable.

mapping(address => bool) whitelist

setOracle

Set the address of the ResilientOracle contract.

function setOracle(address oracleAddress_) external

Parameters

Name

Type

Description

oracleAddress_

address

The new address of the ResilientOracle contract.

📅 Events

Emits OracleChanged with old and new oracle address.

⛔️ Access Requirements

Only owner.

setMaxSingleTransactionLimit

Sets the limit of single transaction amount.

function setMaxSingleTransactionLimit(uint16 chainId_, uint256 limit_) external

Parameters

Name

Type

Description

chainId_

uint16

Destination chain id.

limit_

uint256

Amount in USD(scaled with 18 decimals).

📅 Events

Emits SetMaxSingleTransactionLimit with old and new limit associated with chain id.

⛔️ Access Requirements

Only owner.

setMaxDailyLimit

Sets the limit of daily (24 Hour) transactions amount.

function setMaxDailyLimit(uint16 chainId_, uint256 limit_) external

Parameters

Name

Type

Description

chainId_

uint16

Destination chain id.

limit_

uint256

Amount in USD(scaled with 18 decimals).

📅 Events

Emits setMaxDailyLimit with old and new limit associated with chain id.

⛔️ Access Requirements

Only owner.

setMaxSingleReceiveTransactionLimit

Sets the maximum limit for a single receive transaction.

function setMaxSingleReceiveTransactionLimit(uint16 chainId_, uint256 limit_) external

Parameters

Name

Type

Description

chainId_

uint16

The destination chain ID.

limit_

uint256

The new maximum limit in USD(scaled with 18 decimals).

📅 Events

Emits setMaxSingleReceiveTransactionLimit with old and new limit associated with chain id.

⛔️ Access Requirements

Only owner.

setMaxDailyReceiveLimit

Sets the maximum daily limit for receiving transactions.

function setMaxDailyReceiveLimit(uint16 chainId_, uint256 limit_) external

Parameters

Name

Type

Description

chainId_

uint16

The destination chain ID.

limit_

uint256

The new maximum daily limit in USD(scaled with 18 decimals).

📅 Events

Emits setMaxDailyReceiveLimit with old and new limit associated with chain id.

⛔️ Access Requirements

Only owner.

setWhitelist

Sets the whitelist address to skip checks on transaction limit.

function setWhitelist(address user_, bool val_) external

Parameters

Name

Type

Description

user_

address

Address to be add in whitelist.

val_

bool

Boolean to be set (true for user_ address is whitelisted).

📅 Events

Emits setWhitelist.

⛔️ Access Requirements

Only owner.

pause

Triggers stopped state of the bridge.

function pause() external

⛔️ Access Requirements

Only owner.

unpause

Triggers resume state of the bridge.

function unpause() external

⛔️ Access Requirements

Only owner.

sweepToken

A public function to sweep accidental ERC-20 transfers to this contract. Tokens are sent to user

function sweepToken(contract IERC20 token_, address to_, uint256 amount_) external

Parameters

Name

Type

Description

token_

contract IERC20

The address of the ERC-20 token to sweep

to_

address

The address of the recipient

amount_

uint256

The amount of tokens needs to transfer

📅 Events

Emits SweepToken event

⛔️ Access Requirements

Only Owner

❌ Errors

Throw InsufficientBalance if amount_ is greater than the available balance of the token in the contract

removeTrustedRemote

Remove trusted remote from storage.

function removeTrustedRemote(uint16 remoteChainId_) external

Parameters

Name

Type

Description

remoteChainId_

uint16

The chain's id corresponds to setting the trusted remote to empty.

📅 Events

Emits TrustedRemoteRemoved once chain id is removed from trusted remote.

⛔️ Access Requirements

Only owner.

updateSendAndCallEnabled

It enables or disables sendAndCall functionality for the bridge.

function updateSendAndCallEnabled(bool enabled_) external

Parameters

Name

Type

Description

enabled_

bool

Boolean indicating whether the sendAndCall function should be enabled or disabled.

isEligibleToSend

Checks the eligibility of a sender to initiate a cross-chain token transfer.

function isEligibleToSend(address from_, uint16 dstChainId_, uint256 amount_) external view returns (bool eligibleToSend, uint256 maxSingleTransactionLimit, uint256 maxDailyLimit, uint256 amountInUsd, uint256 transferredInWindow, uint256 last24HourWindowStart, bool isWhiteListedUser)

Parameters

Name

Type

Description

from_

address

The sender's address initiating the transfer.

dstChainId_

uint16

Indicates destination chain.

amount_

uint256

The quantity of tokens to be transferred.

Return Values

Name

Type

Description

eligibleToSend

bool

A boolean indicating whether the sender is eligible to transfer the tokens.

maxSingleTransactionLimit

uint256

The maximum limit for a single transaction.

maxDailyLimit

uint256

The maximum daily limit for transactions.

amountInUsd

uint256

The equivalent amount in USD based on the oracle price.

transferredInWindow

uint256

The total amount transferred in the current 24-hour window.

last24HourWindowStart

uint256

The timestamp when the current 24-hour window started.

isWhiteListedUser

bool

A boolean indicating whether the sender is whitelisted.

sendAndCall

Initiates a cross-chain token transfer and triggers a call on the destination chain.

function sendAndCall(address from_, uint16 dstChainId_, bytes32 toAddress_, uint256 amount_, bytes payload_, uint64 dstGasForCall_, struct ICommonOFT.LzCallParams callparams_) public payable

Parameters

Name

Type

Description

from_

address

Address from which tokens will be debited.

dstChainId_

uint16

Destination chain id on which tokens will be send.

toAddress_

bytes32

Address on which tokens will be credited on destination chain.

amount_

uint256

Amount of tokens that will be transferred.

payload_

bytes

Additional data payload for the call on the destination chain.

dstGasForCall_

uint64

The amount of gas allocated for the call on the destination chain.

callparams_

struct ICommonOFT.LzCallParams

Additional parameters, including refund address, ZRO payment address, and adapter params.

renounceOwnership

Empty implementation of renounce ownership to avoid any mishappening.

function renounceOwnership() public

token

Return's the address of the inner token of this bridge.

function token() public view returns (address)

Return Values

Name

Type

Description

[0]

address

Address of the inner token of this bridge.

Last updated 2 years ago