LosslessControllerV2
This contract is the gateway contract that connects LERC20 token contracts with all the lossless hack mitigation system.
Contract can be found here:
Variables
pauseAdmin
admin
recoveryAdmin
guardian
tokenProtections
pauseAdmin
This address has the access to pause and unpause controller contract.
admin
This address has access to configure lossless protocol. Can be changed by recoveryAdmin
.
recoveryAdmin
This is a super admin's address. This wallet is able to change the regular admin and pause admin. This address is the most powerful admin in the whole lossless protocol and we are using a secure and time tested multi-sig (Gnosis Safe) for it. This variable can be changed using transferRecoveryAdminOwnership
function.
guardian
The address of the guardian smart contract. Guardian contract has access to control protection strategies on controller contract.
tokenProtections
This mapping saves info about every address that is protected. It has a flag that shows if the address is protected or not and also has strategy address so that if the address is protected the controller knows which of the protections strategies should be applied.
Events
AdminChanged(address indexed previousAdmin, address indexed newAdmin)
RecoveryAdminChanged(address indexed previousAdmin, address indexed newAdmin)
PauseAdminChanged(address indexed previousAdmin, address indexed newAdmin)
GuardianSet(address indexed oldGuardian, address indexed newGuardian)
ProtectedAddressSet(address indexed token, address indexed protectedAddress, address indexed strategy)
RemovedProtectedAddress(address indexed token, address indexed protectedAddress)
Modifiers
onlyLosslessRecoveryAdmin
onlyLosslessAdmin
onlyPauseAdmin
onlyGuardian
onlyLosslessRecoveryAdmin
Checks if msg.sender is recoveryAdmin
.
onlyLosslessAdmin
Checks if msg.sender
is admin
.
onlyPauseAdmin
Checks if msg.sender
is pauseAdmin
.
onlyGuardian
Checks if msg.sender
is guardian
smart contract.
Functions
getVersion
isAddressProtected
getProtectedAddressStrategy
pause
unpause
setAdmin
setRecoveryAdmin
setPauseAdmin
setGuardian
setProtectedAddress
removeProtectedAddress
beforeTransfer
beforeTransferFrom
beforeApprove
beforeIncreaseAllowance
beforeDecreaseAllowance
afterApprove
afterTransfer
afterTransferFrom
afterIncreaseAllowance
afterDecreaseAllowance
getVersion
function getVersion() external pure returns (uint256)
Returns current version of the controller.
isAddressProtected
function isAddressProtected(address token, address protectedAddress) external view returns (bool)
Returns either true or false depending if the address has any protections set up on it.
Parameters:
getProtectedAddressStrategy
function getProtectedAddressStrategy(address token, address protectedAddress) external view returns (address)
Returns address of the strategy that the protected address is using. If address is not protected returns zero address.
Parameters:
token
address
Token for which the protection is set.
protectedAddress
address
Address to check the protection strategy for.
pause
function pause() external onlyPauseAdmin
Sets the pause flag to true which in turn pauses some of the contracts functionality. Can be called only by the pauseAdmin
.
unpause
function unpause() external onlyPauseAdmin
Sets the pause flag to false which in turn unpauses some of the contracts functionality. Can be called only by the pauseAdmin
.
setAdmin
function setAdmin(address newAdmin) external onlyLosslessRecoveryAdmin
Sets admin
address. Can be called only by recoveryAdmin
.
Parameters:
newAdmin
address
New admin address.
setRecoveryAdmin
function setRecoveryAdmin(address newRecoveryAdmin) external onlyLosslessRecoveryAdmin
Sets recoveryAdmin
address. Can be called only by recoveryAdmin
.
Parameters:
newRecoveryAdmin
address
New recovery admin address.
setPauseAdmin
function setPauseAdmin(address newPauseAdmin) external onlyLosslessRecoveryAdmin
Sets pauseAdmin
address. Can be called only by recoveryAdmin
.
Parameters:
newPauseAdmin
address
New pause admin address.
setGuardian
function setGuardian(address newGuardian) external onlyLosslessAdmin whenNotPaused
Sets guardian
contract's address. Can be called only by admin
when contract is not paused.
Parameters:
newGuardian
address
New guardian contract's address.
setProtectedAddress
function setProtectedAddress(address token, address protectedAddresss, ProtectionStrategy strategy) external onlyGuardian whenNotPaused
Sets token scoped protection on an address. Can be called only by the guardian
when contract is not paused.
Parameters:
token
address
Token for which the protection rules should be applied.
protectedAddress
address
Address to protect.
strategy
ProtectionStrategy
Strategy address that should be used when protecting the address.
removeProtectedAddress
function removeProtectedAddress(address token, address protectedAddresss) external onlyGuardian whenNotPaused
Removes token scoped protection. Can be called only by guardian
contract when contract is not paused.
Parameters:
token
address
Token for which the protection rules should be removed.
protectedAddress
address
Address to remove the protection from.
beforeTransfer
function beforeTransfer(address sender, address recipient, uint256 amount) external
Hook function that is called before every LERC20 token transfer
function. Also does a call to protection strategy in case sender's address is protected.
Parameters:
sender
address
Sender's address.
recipient
address
Recipient's address.
amount
uint256
Amount of tokens being transferred.
beforeTransferFrom
function beforeTransferFrom(address msgSender, address sender, address recipient, uint256 amount) external
Hook function that is called before every LERC20 token transferFrom
function. Also does a call to protection strategy in case sender's address is protected.
Parameters:
msgSender
address
Address that triggered transfer from sender's address.
sender
address
Sender's address.
recipient
address
Recipient's address.
amount
uint256
Amount of tokens being transferred.
beforeApprove
function beforeApprove(address sender, address spender, uint256 amount) external
Hook function that is called before every LERC20 token approve
function. Does not implement any logic yet.
Parameters:
sender
address
Sender's address.
recipient
address
Recipient's address.
amount
uint256
Amount of tokens being approved.
beforeIncreaseAllowance
function beforeIncreaseAllowance(address msgSender, address spender, uint256 addedValue) external
Hook function that is called before every LERC20 token increaseAllowance
function. Does not implement any logic yet.
Parameters:
msgSender
address
Address that triggered increaseAllowance
function from spender's address.
spender
address
Spender's address.
addedValue
uint256
How many tokens to add to the already approved amount.
beforeDecreaseAllowance
function beforeDecreaseAllowance(address msgSender, address spender, uint256 subtractedValue) external
Hook function that is called before every LERC20 token decreaseAllowance
function. Does not implement any logic yet.
Parameters:
msgSender
address
Address that triggered decreaseAllowance
function from spender's address.
spender
address
Spender's address.
subtractValue
uint256
How many tokens to subtract from the already approved amount.
after hooks
afterApprove
afterTransfer
afterTransferFrom
afterIncreaseAllowance
afterDecreaseAllowance
These functions are deprecated and do not contain any logic. These functions are kept in the controller because tokens that use older version of LERC20 do calls to these functions. They must be kept on the controller in order not to brick those tokens.
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