Function: sendFrom(address _from, uint16 _dstChainId, byte[] _toAddress, uint256 _amount, address payable _refundAddress, address _zroPaymentAddress, byte[] _adapterParams)

Wrapper under ProxyOFT.sendFrom() function. Added whenNotPaused modifier and outflow of currentEpoch is increased by the _amount value. Allows any caller to send to another chain.

Inputs

• _from

  • Control: Full control.

  • Constraints: If _from != msg.sender, transaction will be reverted inside ProxyOFT._debitFrom.

  • Impact: The receiver of innerToken.

• _dstChainId

  • Control: Full control.

  • Constraints: If _lzSend.trustedRemoteLookup mapping does not contain _dstChainId, transaction will be reverted.

  • Impact: ID of the destination chain to which the tokens will be transferred.

• _toAddress

  • Control: Full control.

  • Constraints: No checks.

  • Impact: The address of the receiver of tokens in the _dstChainId network.

• _amount

  • Control: Full control.

  • Constraints: The _from account should have more or an equal amount of tokens.

  • Impact: The amount of innerToken that will be locked inside this contract and transferred to another chain.

Branches and code coverage (including function calls)

Intended branches

• The balance of the contract increased by amount value.

  Test coverage

• The balance of the from address decreased by amount value.

  Test coverage

Negative behavior

• from != msg.sender.

  Negative test

• from does not have enough innerToken.

  Negative test

• The unknown _dstChainId.

  Negative test

Function call analysis

• OFTCore._send() -> ProxyOFT._debitFrom(address _from,uint16,bytes memory,uint256 _amount) -> innerToken.safeTransferFrom(_from, address(this), _amount);

  • External/internal? External.

  • Argument control? _from and _amount.

  • Impact Will block the sent tokens inside this contract.