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// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.12;

import "../interfaces/IPauserRegistry.sol";

/**
 * @title Defines pauser & unpauser roles + modifiers to be used elsewhere.
 * @author Layr Labs, Inc.
 * @notice Terms of Service: https://docs.eigenlayer.xyz/overview/terms-of-service
 */
contract PauserRegistry is IPauserRegistry {
    /// @notice Mapping of addresses to whether they hold the pauser role.
    mapping(address => bool) public isPauser;

    /// @notice Unique address that holds the unpauser role. Capable of changing *both* the pauser and unpauser addresses.
    address public unpauser;

    modifier onlyUnpauser() {
        require(msg.sender == unpauser, "msg.sender is not permissioned as unpauser");
        _;
    }

    constructor(address[] memory _pausers, address _unpauser) {
        for (uint256 i = 0; i < _pausers.length; i++) {
            _setIsPauser(_pausers[i], true);
        }
        _setUnpauser(_unpauser);
    }

    /// @notice Sets new pauser - only callable by unpauser, as the unpauser is expected to be kept more secure, e.g. being a multisig with a higher threshold
    /// @param newPauser Address to be added/removed as pauser
    /// @param canPause Whether the address should be added or removed as pauser
    function setIsPauser(address newPauser, bool canPause) external onlyUnpauser {
        _setIsPauser(newPauser, canPause);
    }

    /// @notice Sets new unpauser - only callable by unpauser, as the unpauser is expected to be kept more secure, e.g. being a multisig with a higher threshold
    function setUnpauser(address newUnpauser) external onlyUnpauser {
        _setUnpauser(newUnpauser);
    }

    function _setIsPauser(address pauser, bool canPause) internal {
        require(pauser != address(0), "PauserRegistry._setPauser: zero address input");
        isPauser[pauser] = canPause;
        emit PauserStatusChanged(pauser, canPause);
    }

    function _setUnpauser(address newUnpauser) internal {
        require(newUnpauser != address(0), "PauserRegistry._setUnpauser: zero address input");
        emit UnpauserChanged(unpauser, newUnpauser);
        unpauser = newUnpauser;
    }
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity >=0.5.0;

/**
 * @title Interface for the `PauserRegistry` contract.
 * @author Layr Labs, Inc.
 * @notice Terms of Service: https://docs.eigenlayer.xyz/overview/terms-of-service
 */
interface IPauserRegistry {
    event PauserStatusChanged(address pauser, bool canPause);

    event UnpauserChanged(address previousUnpauser, address newUnpauser);

    /// @notice Mapping of addresses to whether they hold the pauser role.
    function isPauser(address pauser) external view returns (bool);

    /// @notice Unique address that holds the unpauser role. Capable of changing *both* the pauser and unpauser addresses.
    function unpauser() external view returns (address);
}

{
  "remappings": [
    "forge-std/=lib/eigenlayer-middleware/lib/forge-std/src/",
    "eigenlayer-middleware/=lib/eigenlayer-middleware/",
    "eigenlayer-core/=lib/eigenlayer-middleware/lib/eigenlayer-contracts/src/",
    "@openzeppelin-upgrades-v4.9.0/=lib/eigenlayer-middleware/lib/eigenlayer-contracts/lib/openzeppelin-contracts-upgradeable-v4.9.0/",
    "@openzeppelin-upgrades/=lib/eigenlayer-middleware/lib/openzeppelin-contracts-upgradeable/",
    "@openzeppelin-v4.9.0/=lib/eigenlayer-middleware/lib/eigenlayer-contracts/lib/openzeppelin-contracts-v4.9.0/",
    "@openzeppelin/=lib/eigenlayer-middleware/lib/openzeppelin-contracts/",
    "ds-test/=lib/eigenlayer-middleware/lib/ds-test/src/",
    "eigenlayer-contracts/=lib/eigenlayer-middleware/lib/eigenlayer-contracts/",
    "erc4626-tests/=lib/eigenlayer-middleware/lib/eigenlayer-contracts/lib/openzeppelin-contracts-upgradeable-v4.9.0/lib/erc4626-tests/",
    "openzeppelin-contracts-upgradeable-v4.9.0/=lib/eigenlayer-middleware/lib/eigenlayer-contracts/lib/openzeppelin-contracts-upgradeable-v4.9.0/",
    "openzeppelin-contracts-upgradeable/=lib/eigenlayer-middleware/lib/openzeppelin-contracts-upgradeable/",
    "openzeppelin-contracts-v4.9.0/=lib/eigenlayer-middleware/lib/eigenlayer-contracts/lib/openzeppelin-contracts-v4.9.0/",
    "openzeppelin-contracts/=lib/eigenlayer-middleware/lib/openzeppelin-contracts/",
    "openzeppelin/=lib/eigenlayer-middleware/lib/eigenlayer-contracts/lib/openzeppelin-contracts-upgradeable-v4.9.0/contracts/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "ipfs",
    "appendCBOR": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "paris",
  "viaIR": false,
  "libraries": {}
}

[{"inputs":[{"internalType":"address[]","name":"_pausers","type":"address[]"},{"internalType":"address","name":"_unpauser","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"pauser","type":"address"},{"indexed":false,"internalType":"bool","name":"canPause","type":"bool"}],"name":"PauserStatusChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"previousUnpauser","type":"address"},{"indexed":false,"internalType":"address","name":"newUnpauser","type":"address"}],"name":"UnpauserChanged","type":"event"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"isPauser","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newPauser","type":"address"},{"internalType":"bool","name":"canPause","type":"bool"}],"name":"setIsPauser","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newUnpauser","type":"address"}],"name":"setUnpauser","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"unpauser","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"}]

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