Token

Contract Source Code (Solidity Standard Json-Input format)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

// SPDX-License-Identifier: GPL-3.0-only

pragma solidity >=0.8.9;

import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "./MultiBridgeToken.sol";

/**
 * @title Canonical token that supports multi-bridge minter and multi-token swap
 */
contract MintSwapCanonicalToken is MultiBridgeToken {
    using SafeERC20 for IERC20;

    // bridge token address -> minted amount and cap for each bridge
    mapping(address => Supply) public swapSupplies;

    event TokenSwapCapUpdated(address token, uint256 cap);

    constructor(
        string memory name_,
        string memory symbol_,
        uint8 decimals_
    ) MultiBridgeToken(name_, symbol_, decimals_) {}

    /**
     * @notice msg.sender has bridge token and wants to get canonical token.
     * @param _bridgeToken The intermediary token address for a particular bridge.
     * @param _amount The amount.
     */
    function swapBridgeForCanonical(address _bridgeToken, uint256 _amount) external returns (uint256) {
        Supply storage supply = swapSupplies[_bridgeToken];
        require(supply.cap > 0, "invalid bridge token");
        require(supply.total + _amount < supply.cap, "exceed swap cap");

        supply.total += _amount;
        _mint(msg.sender, _amount);

        // move bridge token from msg.sender to canonical token _amount
        IERC20(_bridgeToken).safeTransferFrom(msg.sender, address(this), _amount);
        return _amount;
    }

    /**
     * @notice msg.sender has canonical token and wants to get bridge token (eg. for cross chain burn).
     * @param _bridgeToken The intermediary token address for a particular bridge.
     * @param _amount The amount.
     */
    function swapCanonicalForBridge(address _bridgeToken, uint256 _amount) external returns (uint256) {
        Supply storage supply = swapSupplies[_bridgeToken];
        require(supply.cap > 0, "invalid bridge token");

        supply.total -= _amount;
        _burn(msg.sender, _amount);

        IERC20(_bridgeToken).safeTransfer(msg.sender, _amount);
        return _amount;
    }

    /**
     * @dev Update existing bridge token swap cap or add a new bridge token with swap cap.
     * Setting cap to 0 will disable the bridge token.
     * @param _bridgeToken The intermediary token address for a particular bridge.
     * @param _swapCap The new swap cap.
     */
    function setBridgeTokenSwapCap(address _bridgeToken, uint256 _swapCap) external onlyOwner {
        swapSupplies[_bridgeToken].cap = _swapCap;
        emit TokenSwapCapUpdated(_bridgeToken, _swapCap);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC20/ERC20.sol)

pragma solidity ^0.8.0;

import "./IERC20.sol";
import "./extensions/IERC20Metadata.sol";
import "../../utils/Context.sol";

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * We have followed general OpenZeppelin Contracts guidelines: functions revert
 * instead returning `false` on failure. This behavior is nonetheless
 * conventional and does not conflict with the expectations of ERC20
 * applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20 is Context, IERC20, IERC20Metadata {
    mapping(address => uint256) private _balances;

    mapping(address => mapping(address => uint256)) private _allowances;

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;

    /**
     * @dev Sets the values for {name} and {symbol}.
     *
     * The default value of {decimals} is 18. To select a different value for
     * {decimals} you should overload it.
     *
     * All two of these values are immutable: they can only be set once during
     * construction.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

    /**
     * @dev Returns the name of the token.
     */
    function name() public view virtual override returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5.05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the value {ERC20} uses, unless this function is
     * overridden;
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view virtual override returns (uint8) {
        return 18;
    }

    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view virtual override returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address to, uint256 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _transfer(owner, to, amount);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on
     * `transferFrom`. This is semantically equivalent to an infinite approval.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, amount);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20}.
     *
     * NOTE: Does not update the allowance if the current allowance
     * is the maximum `uint256`.
     *
     * Requirements:
     *
     * - `from` and `to` cannot be the zero address.
     * - `from` must have a balance of at least `amount`.
     * - the caller must have allowance for ``from``'s tokens of at least
     * `amount`.
     */
    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) public virtual override returns (bool) {
        address spender = _msgSender();
        _spendAllowance(from, spender, amount);
        _transfer(from, to, amount);
        return true;
    }

    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, _allowances[owner][spender] + addedValue);
        return true;
    }

    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        address owner = _msgSender();
        uint256 currentAllowance = _allowances[owner][spender];
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
        unchecked {
            _approve(owner, spender, currentAllowance - subtractedValue);
        }

        return true;
    }

    /**
     * @dev Moves `amount` of tokens from `sender` to `recipient`.
     *
     * This internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `from` must have a balance of at least `amount`.
     */
    function _transfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(from, to, amount);

        uint256 fromBalance = _balances[from];
        require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
        unchecked {
            _balances[from] = fromBalance - amount;
        }
        _balances[to] += amount;

        emit Transfer(from, to, amount);

        _afterTokenTransfer(from, to, amount);
    }

    /** @dev Creates `amount` tokens and assigns them to `account`, increasing
     * the total supply.
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     */
    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");

        _beforeTokenTransfer(address(0), account, amount);

        _totalSupply += amount;
        _balances[account] += amount;
        emit Transfer(address(0), account, amount);

        _afterTokenTransfer(address(0), account, amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`, reducing the
     * total supply.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     * - `account` must have at least `amount` tokens.
     */
    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");

        _beforeTokenTransfer(account, address(0), amount);

        uint256 accountBalance = _balances[account];
        require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
        unchecked {
            _balances[account] = accountBalance - amount;
        }
        _totalSupply -= amount;

        emit Transfer(account, address(0), amount);

        _afterTokenTransfer(account, address(0), amount);
    }

    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     */
    function _approve(
        address owner,
        address spender,
        uint256 amount
    ) internal virtual {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");

        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    /**
     * @dev Spend `amount` form the allowance of `owner` toward `spender`.
     *
     * Does not update the allowance amount in case of infinite allowance.
     * Revert if not enough allowance is available.
     *
     * Might emit an {Approval} event.
     */
    function _spendAllowance(
        address owner,
        address spender,
        uint256 amount
    ) internal virtual {
        uint256 currentAllowance = allowance(owner, spender);
        if (currentAllowance != type(uint256).max) {
            require(currentAllowance >= amount, "ERC20: insufficient allowance");
            unchecked {
                _approve(owner, spender, currentAllowance - amount);
            }
        }
    }

    /**
     * @dev Hook that is called before any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * will be transferred to `to`.
     * - when `from` is zero, `amount` tokens will be minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}

    /**
     * @dev Hook that is called after any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * has been transferred to `to`.
     * - when `from` is zero, `amount` tokens have been minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens have been burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _afterTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `from` to `to` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) external returns (bool);

    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)

pragma solidity ^0.8.0;

import "../IERC20.sol";

/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 *
 * _Available since v4.1._
 */
interface IERC20Metadata is IERC20 {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the symbol of the token.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the decimals places of the token.
     */
    function decimals() external view returns (uint8);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.0;

import "../IERC20.sol";
import "../../../utils/Address.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    using Address for address;

    function safeTransfer(
        IERC20 token,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    function safeTransferFrom(
        IERC20 token,
        address from,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

    /**
     * @dev Deprecated. This function has issues similar to the ones found in
     * {IERC20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
    function safeApprove(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        require(
            (value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }

    function safeIncreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        uint256 newAllowance = token.allowance(address(this), spender) + value;
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    function safeDecreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        unchecked {
            uint256 oldAllowance = token.allowance(address(this), spender);
            require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
            uint256 newAllowance = oldAllowance - value;
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
        }
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
        if (returndata.length > 0) {
            // Return data is optional
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCall(target, data, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        require(isContract(target), "Address: call to non-contract");

        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

// SPDX-License-Identifier: GPL-3.0-only

pragma solidity 0.8.9;

import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import "../../safeguard/Ownable.sol";

/**
 * @title Example Multi-Bridge Pegged ERC20 token
 */
contract MultiBridgeToken is ERC20, Ownable {
    struct Supply {
        uint256 cap;
        uint256 total;
    }
    mapping(address => Supply) public bridges; // bridge address -> supply

    uint8 private immutable _decimals;

    event BridgeSupplyCapUpdated(address bridge, uint256 supplyCap);

    constructor(
        string memory name_,
        string memory symbol_,
        uint8 decimals_
    ) ERC20(name_, symbol_) {
        _decimals = decimals_;
    }

    /**
     * @notice Mints tokens to an address. Increases total amount minted by the calling bridge.
     * @param _to The address to mint tokens to.
     * @param _amount The amount to mint.
     */
    function mint(address _to, uint256 _amount) external returns (bool) {
        Supply storage b = bridges[msg.sender];
        require(b.cap > 0, "invalid caller");
        b.total += _amount;
        require(b.total <= b.cap, "exceeds bridge supply cap");
        _mint(_to, _amount);
        return true;
    }

    /**
     * @notice Burns tokens for msg.sender.
     * @param _amount The amount to burn.
     */
    function burn(uint256 _amount) external returns (bool) {
        _burn(msg.sender, _amount);
        return true;
    }

    /**
     * @notice Burns tokens from an address. Decreases total amount minted if called by a bridge.
     * Alternative to {burnFrom} for compatibility with some bridge implementations.
     * See {_burnFrom}.
     * @param _from The address to burn tokens from.
     * @param _amount The amount to burn.
     */
    function burn(address _from, uint256 _amount) external returns (bool) {
        return _burnFrom(_from, _amount);
    }

    /**
     * @notice Burns tokens from an address. Decreases total amount minted if called by a bridge.
     * See {_burnFrom}.
     * @param _from The address to burn tokens from.
     * @param _amount The amount to burn.
     */
    function burnFrom(address _from, uint256 _amount) external returns (bool) {
        return _burnFrom(_from, _amount);
    }

    /**
     * @dev Burns tokens from an address, deducting from the caller's allowance.
     *      Decreases total amount minted if called by a bridge.
     * @param _from The address to burn tokens from.
     * @param _amount The amount to burn.
     */
    function _burnFrom(address _from, uint256 _amount) internal returns (bool) {
        Supply storage b = bridges[msg.sender];
        if (b.cap > 0 || b.total > 0) {
            // set cap to 1 would effectively disable a deprecated bridge's ability to burn
            require(b.total >= _amount, "exceeds bridge minted amount");
            unchecked {
                b.total -= _amount;
            }
        }
        _spendAllowance(_from, msg.sender, _amount);
        _burn(_from, _amount);
        return true;
    }

    /**
     * @notice Returns the decimals of the token.
     */
    function decimals() public view virtual override returns (uint8) {
        return _decimals;
    }

    /**
     * @notice Updates the supply cap for a bridge.
     * @param _bridge The bridge address.
     * @param _cap The new supply cap.
     */
    function updateBridgeSupplyCap(address _bridge, uint256 _cap) external onlyOwner {
        // cap == 0 means revoking bridge role
        bridges[_bridge].cap = _cap;
        emit BridgeSupplyCapUpdated(_bridge, _cap);
    }

    /**
     * @notice Returns the owner address. Required by BEP20.
     */
    function getOwner() external view returns (address) {
        return owner();
    }
}

// SPDX-License-Identifier: GPL-3.0-only

pragma solidity ^0.8.0;

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 *
 * This adds a normal func that setOwner if _owner is address(0). So we can't allow
 * renounceOwnership. So we can support Proxy based upgradable contract
 */
abstract contract Ownable {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _setOwner(msg.sender);
    }

    /**
     * @dev Only to be called by inherit contracts, in their init func called by Proxy
     * we require _owner == address(0), which is only possible when it's a delegateCall
     * because constructor sets _owner in contract state.
     */
    function initOwner() internal {
        require(_owner == address(0), "owner already set");
        _setOwner(msg.sender);
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(owner() == msg.sender, "Ownable: caller is not the owner");
        _;
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _setOwner(newOwner);
    }

    function _setOwner(address newOwner) private {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

{
  "evmVersion": "london",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs",
    "useLiteralContent": true
  },
  "optimizer": {
    "enabled": true,
    "runs": 800
  },
  "remappings": [],
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  }
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"string","name":"name_","type":"string"},{"internalType":"string","name":"symbol_","type":"string"},{"internalType":"uint8","name":"decimals_","type":"uint8"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"bridge","type":"address"},{"indexed":false,"internalType":"uint256","name":"supplyCap","type":"uint256"}],"name":"BridgeSupplyCapUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"token","type":"address"},{"indexed":false,"internalType":"uint256","name":"cap","type":"uint256"}],"name":"TokenSwapCapUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"bridges","outputs":[{"internalType":"uint256","name":"cap","type":"uint256"},{"internalType":"uint256","name":"total","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"burn","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_from","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"burn","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_from","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"burnFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"subtractedValue","type":"uint256"}],"name":"decreaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"getOwner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"addedValue","type":"uint256"}],"name":"increaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"mint","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_bridgeToken","type":"address"},{"internalType":"uint256","name":"_swapCap","type":"uint256"}],"name":"setBridgeTokenSwapCap","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_bridgeToken","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"swapBridgeForCanonical","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_bridgeToken","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"swapCanonicalForBridge","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"swapSupplies","outputs":[{"internalType":"uint256","name":"cap","type":"uint256"},{"internalType":"uint256","name":"total","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_bridge","type":"address"},{"internalType":"uint256","name":"_cap","type":"uint256"}],"name":"updateBridgeSupplyCap","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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