Warning! Contract bytecode has been changed and doesn't match the verified one. Therefore, interaction with this smart contract may be risky.
- Contract name:
- AuthLib
- Optimization enabled
- false
- Compiler version
- v0.8.26+commit.8a97fa7a
- EVM Version
- paris
- Verified at
- 2024-09-24T13:14:22.291934Z
contracts/Classes/Access.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;
/**
* @title AuthLib
* @dev A library for managing role-based access control (RBAC) using ranks. Allows accounts to be granted or revoked roles, and checks for required ranks.
*/
library AuthLib {
// Custom error for unauthorized account access
error AccessControlUnauthorizedAccount(address account, bytes32 neededRole);
// Enum representing different ranks in the system
enum Rank {
PRINCEPS,
GLADIATOR,
LEGATUS,
SENATOR,
CONSUL,
PREATORMAXIMUS
}
// Registry structure to store keys and their corresponding ranks
struct Registry {
uint256[] keys; // Array to hold registered keys
mapping(uint256 => uint256) indexOf; // Maps key to its index in the keys array
mapping(uint256 => bool) inserted; // Tracks whether a key is inserted
mapping(uint256 => Rank) keyRoles; // Maps key to its assigned rank
}
// RoleData structure for managing roles of accounts
struct RoleData {
Registry registry; // Holds the registry for keys and roles
mapping(address => Rank) ranks; // Maps accounts to their assigned ranks
}
// Events
event RoleGranted(address indexed account, Rank role);
event RoleRevoked(address indexed account, Rank role);
/**
* @dev Registers a key with a specified rank in the registry.
* @param _registry The registry where the key will be stored.
* @param key The key to register (typically the address cast to uint256).
* @param rank The rank to assign to the key.
*/
function Register(Registry storage _registry, uint256 key, Rank rank) public {
if (!_registry.inserted[key]) {
_registry.inserted[key] = true;
_registry.indexOf[key] = _registry.keys.length;
_registry.keys.push(key);
_registry.keyRoles[key] = rank; // Store the rank with the key
} else {
// Update the rank if already registered
_registry.keyRoles[key] = rank;
}
}
/**
* @dev Removes a key from the registry.
* @param _registry The registry from which the key will be removed.
* @param key The key to remove.
*/
function Remove(Registry storage _registry, uint256 key) public {
if (!_registry.inserted[key]) return;
delete _registry.inserted[key];
uint256 index = _registry.indexOf[key];
uint256 lastKey = _registry.keys[_registry.keys.length - 1];
_registry.keys[index] = lastKey;
_registry.indexOf[lastKey] = index;
delete _registry.indexOf[key];
_registry.keys.pop();
delete _registry.keyRoles[key]; // Remove the associated role
}
/**
* @dev Grants a role (rank) to an account. This updates the registry and emits a RoleGranted event.
* @param roleData The RoleData struct that holds the registry and ranks.
* @param account The account to grant the role to.
* @param rank The rank to assign to the account.
*/
function grantRole(RoleData storage roleData, address account, Rank rank) public {
uint256 key = uint256(uint160(account));
roleData.ranks[account] = rank;
Register(roleData.registry, key, rank);
emit RoleGranted(account, rank); // Emit event for granting role
}
/**
* @dev Revokes a role (rank) from an account. This updates the registry and emits a RoleRevoked event.
* @param roleData The RoleData struct that holds the registry and ranks.
* @param account The account from which the role will be revoked.
*/
function revokeRole(RoleData storage roleData, address account) public {
uint256 key = uint256(uint160(account));
Rank role = roleData.ranks[account]; // Capture the role before removal for the event
delete roleData.ranks[account];
Remove(roleData.registry, key);
emit RoleRevoked(account, role); // Emit event for revoking role
}
/**
* @dev Checks whether an account holds the required role (rank) or higher.
* @param roleData The RoleData struct that holds the registry and ranks.
* @param requiredRank The minimum required rank for the account.
* @param account The account to check for the required rank.
*/
function checkRole(RoleData storage roleData, Rank requiredRank, address account) public view {
require(roleData.ranks[account] >= requiredRank, "AccessControlUnauthorizedAccount");
}
/**
* @dev Retrieves the highest rank assigned to an account.
* @param roleData The RoleData struct that holds the registry and ranks.
* @param account The account whose rank is being queried.
* @return The highest rank held by the account.
*/
function getHighestRankForAccount(RoleData storage roleData, address account) public view returns (Rank) {
return roleData.ranks[account];
}
}
Compiler Settings
{"outputSelection":{"*":{"*":["abi","evm.bytecode","evm.deployedBytecode","evm.methodIdentifiers","metadata","storageLayout"],"":["ast"]}},"optimizer":{"runs":200,"enabled":false},"libraries":{},"evmVersion":"paris"}
Contract ABI
[{"type":"error","name":"AccessControlUnauthorizedAccount","inputs":[{"type":"address","name":"account","internalType":"address"},{"type":"bytes32","name":"neededRole","internalType":"bytes32"}]},{"type":"event","name":"RoleGranted","inputs":[{"type":"address","name":"account","internalType":"address","indexed":true},{"type":"uint8","name":"role","internalType":"enum AuthLib.Rank","indexed":false}],"anonymous":false},{"type":"event","name":"RoleRevoked","inputs":[{"type":"address","name":"account","internalType":"address","indexed":true},{"type":"uint8","name":"role","internalType":"enum AuthLib.Rank","indexed":false}],"anonymous":false}]
Contract Creation Code
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ByteCode
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