ETH Price: $3,953.12 (-0.82%)
Gas: 0.04 GWei

Contract

0xf3A431008396df8A8b2DF492C913706BDB0874ef

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ETH Value

$0.00

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Contract Source Code Verified (Exact Match)

Contract Name:
ProxyAdmin

Compiler Version
vyper:0.3.10

Optimization Enabled:
N/A

Other Settings:
MIT license

Contract Source Code (Vyper language format)

# pragma version 0.3.10
# pragma evm-version paris
"""
@title ProxyAdmin
@notice Thin proxy allowing shared ownership of contracts
@author Ben Hauser
@license MIT
"""


event TransactionExecuted:
    admin: indexed(address)
    target: indexed(address)
    calldata: Bytes[100000]
    value: uint256

event RequestAdminChange:
    current_admin: address
    future_admin: address

event RevokeAdminChange:
    current_admin: address
    future_admin: address
    calling_admin: address

event ApproveAdminChange:
    current_admin: address
    future_admin: address
    calling_admin: address

event AcceptAdminChange:
    previous_admin: address
    current_admin: address


admins: public(address[2])

pending_current_admin: uint256
pending_new_admin: address
change_approved: bool


@external
def __init__(_authorized: address[2]):
    """
    @notice Contract constructor
    @param _authorized Admin accounts for this contract
    """
    self.admins = _authorized


@payable
@external
def execute(_target: address, _calldata: Bytes[100000]):
    """
    @notice Execute a contract call
    @dev Ether sent when calling this function is forwarded onward
    @param _target Address of the contract to call
    @param _calldata Calldata to use in the call
    """
    assert msg.sender in self.admins  # dev: only admin

    raw_call(_target, _calldata, value=msg.value)
    log TransactionExecuted(msg.sender, _target, _calldata, msg.value)


@view
@external
def get_admin_change_status() -> (address, address, bool):
    """
    @notice Get information about a pending admin change
    @return Admin address to be replaced,
            admin address to be added,
            has change been approved?
    """
    idx: uint256 = self.pending_current_admin
    if idx == 0:
        return ZERO_ADDRESS, ZERO_ADDRESS, False
    else:
        return self.admins[idx - 1], self.pending_new_admin, self.change_approved


@external
def request_admin_change(_new_admin: address):
    """
    @notice Initiate changing an admin address
    @param _new_admin New admin address (replaces msg.sender)
    """
    assert self.pending_current_admin == 0  # dev: already an active request

    admin_list: address[2] = self.admins
    assert _new_admin not in admin_list  # dev: new admin is already admin

    for i in range(2):
        if admin_list[i] == msg.sender:
            self.pending_current_admin = i + 1
            self.pending_new_admin = _new_admin
            log RequestAdminChange(msg.sender, _new_admin)
            return

    raise  # dev: only admin


@external
def approve_admin_change():
    """
    @notice Approve changing an admin address
    @dev Only callable by the 2nd admin address (the one that will not change)
    """
    idx: uint256 = self.pending_current_admin

    assert idx > 0  # dev: no active request
    assert msg.sender == self.admins[idx % 2]  # dev: caller is not 2nd admin

    self.change_approved = True
    log ApproveAdminChange(self.admins[idx - 1], self.pending_new_admin, msg.sender)


@external
def revoke_admin_change():
    """
    @notice Revoke changing an admin address
    @dev May be called by either admin at any time to reset the process,
         even if approval has previous been given
    """
    assert msg.sender in self.admins  # dev: only admin

    idx: uint256 = self.pending_current_admin
    pending_admin: address = ZERO_ADDRESS
    if idx > 0:
        pending_admin = self.admins[idx - 1]

    log RevokeAdminChange(pending_admin, self.pending_new_admin, msg.sender)

    self.pending_current_admin = 0
    self.pending_new_admin = ZERO_ADDRESS
    self.change_approved = False



@external
def accept_admin_change():
    """
    @notice Accept a changed admin address
    @dev Only callable by the new admin address, after approval has been given
    """
    assert self.change_approved == True  # dev: change not approved
    assert msg.sender == self.pending_new_admin  # dev: only new admin

    idx: uint256 = self.pending_current_admin - 1
    log AcceptAdminChange(self.admins[idx], msg.sender)
    self.admins[idx] = msg.sender

    self.pending_current_admin = 0
    self.pending_new_admin = ZERO_ADDRESS
    self.change_approved = False

Contract Security Audit

Contract ABI

[{"name":"TransactionExecuted","inputs":[{"name":"admin","type":"address","indexed":true},{"name":"target","type":"address","indexed":true},{"name":"calldata","type":"bytes","indexed":false},{"name":"value","type":"uint256","indexed":false}],"anonymous":false,"type":"event"},{"name":"RequestAdminChange","inputs":[{"name":"current_admin","type":"address","indexed":false},{"name":"future_admin","type":"address","indexed":false}],"anonymous":false,"type":"event"},{"name":"RevokeAdminChange","inputs":[{"name":"current_admin","type":"address","indexed":false},{"name":"future_admin","type":"address","indexed":false},{"name":"calling_admin","type":"address","indexed":false}],"anonymous":false,"type":"event"},{"name":"ApproveAdminChange","inputs":[{"name":"current_admin","type":"address","indexed":false},{"name":"future_admin","type":"address","indexed":false},{"name":"calling_admin","type":"address","indexed":false}],"anonymous":false,"type":"event"},{"name":"AcceptAdminChange","inputs":[{"name":"previous_admin","type":"address","indexed":false},{"name":"current_admin","type":"address","indexed":false}],"anonymous":false,"type":"event"},{"stateMutability":"nonpayable","type":"constructor","inputs":[{"name":"_authorized","type":"address[2]"}],"outputs":[]},{"stateMutability":"payable","type":"function","name":"execute","inputs":[{"name":"_target","type":"address"},{"name":"_calldata","type":"bytes"}],"outputs":[]},{"stateMutability":"view","type":"function","name":"get_admin_change_status","inputs":[],"outputs":[{"name":"","type":"address"},{"name":"","type":"address"},{"name":"","type":"bool"}]},{"stateMutability":"nonpayable","type":"function","name":"request_admin_change","inputs":[{"name":"_new_admin","type":"address"}],"outputs":[]},{"stateMutability":"nonpayable","type":"function","name":"approve_admin_change","inputs":[],"outputs":[]},{"stateMutability":"nonpayable","type":"function","name":"revoke_admin_change","inputs":[],"outputs":[]},{"stateMutability":"nonpayable","type":"function","name":"accept_admin_change","inputs":[],"outputs":[]},{"stateMutability":"view","type":"function","name":"admins","inputs":[{"name":"arg0","type":"uint256"}],"outputs":[{"name":"","type":"address"}]}]

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Deployed Bytecode

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

Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

0000000000000000000000002d12d0907a388811e3aa855a550f959501d303ee000000000000000000000000babe61887f1de2713c6f97e567623453d3c79f67

-----Decoded View---------------
Arg [0] : _authorized (address[2]): 0x2d12D0907A388811e3AA855A550F959501d303EE,0xbabe61887f1de2713c6f97e567623453d3C79f67

-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 0000000000000000000000002d12d0907a388811e3aa855a550f959501d303ee
Arg [1] : 000000000000000000000000babe61887f1de2713c6f97e567623453d3c79f67


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