// SPDX-License-Identifier: MIT
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: MIT
pragma solidity ^0.8.0;
/**
* @title Counters
* @author Matt Condon (@shrugs)
* @dev Provides counters that can only be incremented, decremented or reset. This can be used e.g. to track the number
* of elements in a mapping, issuing ERC721 ids, or counting request ids.
*
* Include with `using Counters for Counters.Counter;`
*/
library Counters {
struct Counter {
// This variable should never be directly accessed by users of the library: interactions must be restricted to
// the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add
// this feature: see https://github.com/ethereum/solidity/issues/4637
uint256 _value; // default: 0
}
function current(Counter storage counter) internal view returns (uint256) {
return counter._value;
}
function increment(Counter storage counter) internal {
unchecked {
counter._value += 1;
}
}
function decrement(Counter storage counter) internal {
uint256 value = counter._value;
require(value > 0, "Counter: decrement overflow");
unchecked {
counter._value = value - 1;
}
}
function reset(Counter storage counter) internal {
counter._value = 0;
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.
*
* These functions can be used to verify that a message was signed by the holder
* of the private keys of a given address.
*/
library ECDSA {
/**
* @dev Returns the address that signed a hashed message (`hash`) with
* `signature`. This address can then be used for verification purposes.
*
* The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
* this function rejects them by requiring the `s` value to be in the lower
* half order, and the `v` value to be either 27 or 28.
*
* IMPORTANT: `hash` _must_ be the result of a hash operation for the
* verification to be secure: it is possible to craft signatures that
* recover to arbitrary addresses for non-hashed data. A safe way to ensure
* this is by receiving a hash of the original message (which may otherwise
* be too long), and then calling {toEthSignedMessageHash} on it.
*
* Documentation for signature generation:
* - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js]
* - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers]
*/
function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
// Check the signature length
// - case 65: r,s,v signature (standard)
// - case 64: r,vs signature (cf https://eips.ethereum.org/EIPS/eip-2098) _Available since v4.1._
if (signature.length == 65) {
bytes32 r;
bytes32 s;
uint8 v;
// ecrecover takes the signature parameters, and the only way to get them
// currently is to use assembly.
assembly {
r := mload(add(signature, 0x20))
s := mload(add(signature, 0x40))
v := byte(0, mload(add(signature, 0x60)))
}
return recover(hash, v, r, s);
} else if (signature.length == 64) {
bytes32 r;
bytes32 vs;
// ecrecover takes the signature parameters, and the only way to get them
// currently is to use assembly.
assembly {
r := mload(add(signature, 0x20))
vs := mload(add(signature, 0x40))
}
return recover(hash, r, vs);
} else {
revert("ECDSA: invalid signature length");
}
}
/**
* @dev Overload of {ECDSA-recover} that receives the `r` and `vs` short-signature fields separately.
*
* See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures]
*
* _Available since v4.2._
*/
function recover(
bytes32 hash,
bytes32 r,
bytes32 vs
) internal pure returns (address) {
bytes32 s;
uint8 v;
assembly {
s := and(vs, 0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff)
v := add(shr(255, vs), 27)
}
return recover(hash, v, r, s);
}
/**
* @dev Overload of {ECDSA-recover} that receives the `v`, `r` and `s` signature fields separately.
*/
function recover(
bytes32 hash,
uint8 v,
bytes32 r,
bytes32 s
) internal pure returns (address) {
// EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature
// unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines
// the valid range for s in (281): 0 < s < secp256k1n ÷ 2 + 1, and for v in (282): v ∈ {27, 28}. Most
// signatures from current libraries generate a unique signature with an s-value in the lower half order.
//
// If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value
// with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or
// vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept
// these malleable signatures as well.
require(
uint256(s) <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0,
"ECDSA: invalid signature 's' value"
);
require(v == 27 || v == 28, "ECDSA: invalid signature 'v' value");
// If the signature is valid (and not malleable), return the signer address
address signer = ecrecover(hash, v, r, s);
require(signer != address(0), "ECDSA: invalid signature");
return signer;
}
/**
* @dev Returns an Ethereum Signed Message, created from a `hash`. This
* produces hash corresponding to the one signed with the
* https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
* JSON-RPC method as part of EIP-191.
*
* See {recover}.
*/
function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) {
// 32 is the length in bytes of hash,
// enforced by the type signature above
return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash));
}
/**
* @dev Returns an Ethereum Signed Typed Data, created from a
* `domainSeparator` and a `structHash`. This produces hash corresponding
* to the one signed with the
* https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`]
* JSON-RPC method as part of EIP-712.
*
* See {recover}.
*/
function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) {
return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash));
}
}
// SPDX-License-Identifier: MIT
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 guidelines: functions revert instead
* of 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:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, 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}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), 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}.
*
* Requirements:
*
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
uint256 currentAllowance = _allowances[sender][_msgSender()];
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
unchecked {
_approve(sender, _msgSender(), currentAllowance - 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) {
_approve(_msgSender(), spender, _allowances[_msgSender()][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) {
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(_msgSender(), 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:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(
address sender,
address recipient,
uint256 amount
) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[sender] = senderBalance - amount;
}
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
_afterTokenTransfer(sender, recipient, 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 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: WTFPL
pragma solidity >=0.8.4;
import "./IErc20.sol";
/// @notice Emitted when the owner is the zero address.
error Erc20__ApproveOwnerZeroAddress();
/// @notice Emitted when the spender is the zero address.
error Erc20__ApproveSpenderZeroAddress();
/// @notice Emitted when burning more tokens than are in the account.
error Erc20__BurnUnderflow(uint256 accountBalance, uint256 burnAmount);
/// @notice Emitted when the holder is the zero address.
error Erc20__BurnZeroAddress();
/// @notice Emitted when the sender did not give the caller a sufficient allowance.
error Erc20__InsufficientAllowance(uint256 allowance, uint256 amount);
/// @notice Emitted when the beneficiary is the zero address.
error Erc20__MintZeroAddress();
/// @notice Emitted when tranferring more tokens than there are in the account.
error Erc20__TransferUnderflow(uint256 senderBalance, uint256 amount);
/// @notice Emitted when the sender is the zero address.
error Erc20__TransferSenderZeroAddress();
/// @notice Emitted when the recipient is the zero address.
error Erc20__TransferRecipientZeroAddress();
/// @title Erc20
/// @author Paul Razvan Berg
contract Erc20 is IErc20 {
/// PUBLIC STORAGE ///
/// @inheritdoc IErc20
string public override name;
/// @inheritdoc IErc20
string public override symbol;
/// @inheritdoc IErc20
uint8 public immutable override decimals;
/// @inheritdoc IErc20
uint256 public override totalSupply;
/// @inheritdoc IErc20
mapping(address => uint256) public override balanceOf;
/// @inheritdoc IErc20
mapping(address => mapping(address => uint256)) public override allowance;
/// CONSTRUCTOR ///
/// @notice All three of these values are immutable: they can only be set once during construction.
/// @param _name Erc20 name of this token.
/// @param _symbol Erc20 symbol of this token.
/// @param _decimals Erc20 decimal precision of this token.
constructor(
string memory _name,
string memory _symbol,
uint8 _decimals
) {
name = _name;
symbol = _symbol;
decimals = _decimals;
}
/// PUBLIC NON-CONSTANT FUNCTIONS ///
/// @inheritdoc IErc20
function approve(address spender, uint256 amount) external virtual override returns (bool) {
approveInternal(msg.sender, spender, amount);
return true;
}
/// @inheritdoc IErc20
function decreaseAllowance(address spender, uint256 subtractedValue) external virtual override returns (bool) {
uint256 newAllowance = allowance[msg.sender][spender] - subtractedValue;
approveInternal(msg.sender, spender, newAllowance);
return true;
}
/// @inheritdoc IErc20
function increaseAllowance(address spender, uint256 addedValue) external virtual override returns (bool) {
uint256 newAllowance = allowance[msg.sender][spender] + addedValue;
approveInternal(msg.sender, spender, newAllowance);
return true;
}
/// @inheritdoc IErc20
function transfer(address recipient, uint256 amount) external virtual override returns (bool) {
transferInternal(msg.sender, recipient, amount);
return true;
}
/// @inheritdoc IErc20
function transferFrom(
address sender,
address recipient,
uint256 amount
) external virtual override returns (bool) {
transferInternal(sender, recipient, amount);
uint256 currentAllowance = allowance[sender][msg.sender];
if (currentAllowance < amount) {
revert Erc20__InsufficientAllowance(currentAllowance, amount);
}
approveInternal(sender, msg.sender, currentAllowance);
return true;
}
/// INTERNAL NON-CONSTANT FUNCTIONS ///
/// @notice Sets `amount` as the allowance of `spender` over the `owner`s tokens.
///
/// @dev Emits an {Approval} event.
///
/// This is internal function is equivalent to `approve`, and can be used to e.g. set automatic
/// allowances for certain subsystems, etc.
///
/// Requirements:
///
/// - `owner` cannot be the zero address.
/// - `spender` cannot be the zero address.
function approveInternal(
address owner,
address spender,
uint256 amount
) internal virtual {
if (owner == address(0)) {
revert Erc20__ApproveOwnerZeroAddress();
}
if (spender == address(0)) {
revert Erc20__ApproveSpenderZeroAddress();
}
allowance[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/// @notice Destroys `burnAmount` tokens from `holder`, reducing the token supply.
///
/// @dev Emits a {Transfer} event.
///
/// Requirements:
///
/// - `holder` must have at least `amount` tokens.
function burnInternal(address holder, uint256 burnAmount) internal {
if (holder == address(0)) {
revert Erc20__BurnZeroAddress();
}
uint256 accountBalance = balanceOf[holder];
if (accountBalance < burnAmount) {
revert Erc20__BurnUnderflow(accountBalance, burnAmount);
}
// Burn the tokens.
unchecked {
balanceOf[holder] = accountBalance - burnAmount;
}
// Reduce the total supply.
totalSupply -= burnAmount;
emit Transfer(holder, address(0), burnAmount);
}
/// @notice Prints new tokens into existence and assigns them to `beneficiary`, increasing the
/// total supply.
///
/// @dev Emits a {Transfer} event.
///
/// Requirements:
///
/// - The beneficiary's balance and the total supply cannot overflow.
function mintInternal(address beneficiary, uint256 mintAmount) internal {
if (beneficiary == address(0)) {
revert Erc20__MintZeroAddress();
}
/// Mint the new tokens.
balanceOf[beneficiary] += mintAmount;
/// Increase the total supply.
totalSupply += mintAmount;
emit Transfer(address(0), beneficiary, mintAmount);
}
/// @notice Moves `amount` tokens from `sender` to `recipient`.
///
/// @dev This is 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:
///
/// - `sender` cannot be the zero address.
/// - `recipient` cannot be the zero address.
/// - `sender` must have a balance of at least `amount`.
function transferInternal(
address sender,
address recipient,
uint256 amount
) internal virtual {
if (sender == address(0)) {
revert Erc20__TransferSenderZeroAddress();
}
if (recipient == address(0)) {
revert Erc20__TransferRecipientZeroAddress();
}
uint256 senderBalance = balanceOf[sender];
if (senderBalance < amount) {
revert Erc20__TransferUnderflow(senderBalance, amount);
}
unchecked {
balanceOf[sender] = senderBalance - amount;
}
balanceOf[recipient] += amount;
emit Transfer(sender, recipient, amount);
}
}
// SPDX-License-Identifier: WTFPL
// solhint-disable var-name-mixedcase
pragma solidity >=0.8.4;
import "./Erc20.sol";
import "./IErc20Permit.sol";
/// @notice Emitted when the recovered owner does not match the actual owner.
error Erc20Permit__InvalidSignature(uint8 v, bytes32 r, bytes32 s);
/// @notice Emitted when the owner is the zero address.
error Erc20Permit__OwnerZeroAddress();
/// @notice Emitted when the permit expired.
error Erc20Permit__PermitExpired(uint256 deadline);
/// @notice Emitted when the recovered owner is the zero address.
error Erc20Permit__RecoveredOwnerZeroAddress();
/// @notice Emitted when the spender is the zero address.
error Erc20Permit__SpenderZeroAddress();
/// @title Erc20Permit
/// @author Paul Razvan Berg
contract Erc20Permit is
IErc20Permit, // one dependency
Erc20 // one dependency
{
/// PUBLIC STORAGE ///
/// @inheritdoc IErc20Permit
bytes32 public immutable override DOMAIN_SEPARATOR;
/// @inheritdoc IErc20Permit
bytes32 public constant override PERMIT_TYPEHASH =
0xfc77c2b9d30fe91687fd39abb7d16fcdfe1472d065740051ab8b13e4bf4a617f;
/// @inheritdoc IErc20Permit
mapping(address => uint256) public override nonces;
/// @inheritdoc IErc20Permit
string public constant override version = "1";
/// CONSTRUCTOR ///
constructor(
string memory _name,
string memory _symbol,
uint8 _decimals
) Erc20(_name, _symbol, _decimals) {
uint256 chainId;
// solhint-disable-next-line no-inline-assembly
assembly {
chainId := chainid()
}
DOMAIN_SEPARATOR = keccak256(
abi.encode(
keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"),
keccak256(bytes(name)),
keccak256(bytes(version)),
chainId,
address(this)
)
);
}
/// PUBLIC NON-CONSTANT FUNCTIONS ///
/// @inheritdoc IErc20Permit
function permit(
address owner,
address spender,
uint256 amount,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) external override {
if (owner == address(0)) {
revert Erc20Permit__OwnerZeroAddress();
}
if (spender == address(0)) {
revert Erc20Permit__SpenderZeroAddress();
}
if (deadline < block.timestamp) {
revert Erc20Permit__PermitExpired(deadline);
}
// It's safe to use the "+" operator here because the nonce cannot realistically overflow, ever.
bytes32 hashStruct = keccak256(abi.encode(PERMIT_TYPEHASH, owner, spender, amount, nonces[owner]++, deadline));
bytes32 digest = keccak256(abi.encodePacked("\x19\x01", DOMAIN_SEPARATOR, hashStruct));
address recoveredOwner = ecrecover(digest, v, r, s);
if (recoveredOwner == address(0)) {
revert Erc20Permit__RecoveredOwnerZeroAddress();
}
if (recoveredOwner != owner) {
revert Erc20Permit__InvalidSignature(v, r, s);
}
approveInternal(owner, spender, amount);
}
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.6;
import "./ITerminalDirectory.sol";
import "./ITerminal.sol";
interface IDirectPaymentAddress {
event Forward(
address indexed payer,
uint256 indexed projectId,
address beneficiary,
uint256 value,
string memo,
bool preferUnstakedTickets
);
function terminalDirectory() external returns (ITerminalDirectory);
function projectId() external returns (uint256);
function memo() external returns (string memory);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC165 standard, as defined in the
* https://eips.ethereum.org/EIPS/eip-165[EIP].
*
* Implementers can declare support of contract interfaces, which can then be
* queried by others ({ERC165Checker}).
*
* For an implementation, see {ERC165}.
*/
interface IERC165 {
/**
* @dev Returns true if this contract implements the interface defined by
* `interfaceId`. See the corresponding
* https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
* to learn more about how these ids are created.
*
* This function call must use less than 30 000 gas.
*/
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}
// SPDX-License-Identifier: MIT
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 `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, 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 `sender` to `recipient` 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 sender,
address recipient,
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
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
pragma solidity ^0.8.0;
import "../../utils/introspection/IERC165.sol";
/**
* @dev Required interface of an ERC721 compliant contract.
*/
interface IERC721 is IERC165 {
/**
* @dev Emitted when `tokenId` token is transferred from `from` to `to`.
*/
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
*/
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
*/
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
/**
* @dev Returns the number of tokens in ``owner``'s account.
*/
function balanceOf(address owner) external view returns (uint256 balance);
/**
* @dev Returns the owner of the `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function ownerOf(uint256 tokenId) external view returns (address owner);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Transfers `tokenId` token from `from` to `to`.
*
* WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Gives permission to `to` to transfer `tokenId` token to another account.
* The approval is cleared when the token is transferred.
*
* Only a single account can be approved at a time, so approving the zero address clears previous approvals.
*
* Requirements:
*
* - The caller must own the token or be an approved operator.
* - `tokenId` must exist.
*
* Emits an {Approval} event.
*/
function approve(address to, uint256 tokenId) external;
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) external view returns (address operator);
/**
* @dev Approve or remove `operator` as an operator for the caller.
* Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
*
* Requirements:
*
* - The `operator` cannot be the caller.
*
* Emits an {ApprovalForAll} event.
*/
function setApprovalForAll(address operator, bool _approved) external;
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}
*/
function isApprovedForAll(address owner, address operator) external view returns (bool);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes calldata data
) external;
}
// SPDX-License-Identifier: WTFPL
pragma solidity >=0.8.4;
/// @title IErc20
/// @author Paul Razvan Berg
/// @notice Implementation for the Erc20 standard.
///
/// We have followed general OpenZeppelin guidelines: functions revert instead of returning
/// `false` on failure. This behavior is nonetheless conventional and does not conflict with
/// the 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 Erc 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.
///
/// @dev Forked from OpenZeppelin
/// https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v3.4.0/contracts/token/ERC20/ERC20.sol
interface IErc20 {
/// EVENTS ///
/// @notice Emitted when an approval happens.
/// @param owner The address of the owner of the tokens.
/// @param spender The address of the spender.
/// @param amount The maximum amount that can be spent.
event Approval(address indexed owner, address indexed spender, uint256 amount);
/// @notice Emitted when a transfer happens.
/// @param from The account sending the tokens.
/// @param to The account receiving the tokens.
/// @param amount The amount of tokens transferred.
event Transfer(address indexed from, address indexed to, uint256 amount);
/// CONSTANT FUNCTIONS ///
/// @notice Returns the remaining number of tokens that `spender` will be allowed to spend
/// on behalf of `owner` through {transferFrom}. This is zero by default.
///
/// @dev This value changes when {approve} or {transferFrom} are called.
function allowance(address owner, address spender) external view returns (uint256);
/// @notice Returns the amount of tokens owned by `account`.
function balanceOf(address account) external view returns (uint256);
/// @notice Returns the number of decimals used to get its user representation.
function decimals() external view returns (uint8);
/// @notice Returns the name of the token.
function name() external view returns (string memory);
/// @notice Returns the symbol of the token, usually a shorter version of the name.
function symbol() external view returns (string memory);
/// @notice Returns the amount of tokens in existence.
function totalSupply() external view returns (uint256);
/// NON-CONSTANT FUNCTIONS ///
/// @notice Sets `amount` as the allowance of `spender` over the caller's tokens.
///
/// @dev Emits an {Approval} event.
///
/// 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
///
/// Requirements:
///
/// - `spender` cannot be the zero address.
///
/// @return a boolean value indicating whether the operation succeeded.
function approve(address spender, uint256 amount) external returns (bool);
/// @notice Atomically decreases the allowance granted to `spender` by the caller.
///
/// @dev Emits an {Approval} event indicating the updated allowance.
///
/// This is an alternative to {approve} that can be used as a mitigation for problems described
/// in {Erc20Interface-approve}.
///
/// Requirements:
///
/// - `spender` cannot be the zero address.
/// - `spender` must have allowance for the caller of at least `subtractedValue`.
function decreaseAllowance(address spender, uint256 subtractedValue) external returns (bool);
/// @notice Atomically increases the allowance granted to `spender` by the caller.
///
/// @dev Emits an {Approval} event indicating the updated allowance.
///
/// This is an alternative to {approve} that can be used as a mitigation for the problems described above.
///
/// Requirements:
///
/// - `spender` cannot be the zero address.
function increaseAllowance(address spender, uint256 addedValue) external returns (bool);
/// @notice Moves `amount` tokens from the caller's account to `recipient`.
///
/// @dev Emits a {Transfer} event.
///
/// Requirements:
///
/// - `recipient` cannot be the zero address.
/// - The caller must have a balance of at least `amount`.
///
/// @return a boolean value indicating whether the operation succeeded.
function transfer(address recipient, uint256 amount) external returns (bool);
/// @notice Moves `amount` tokens from `sender` to `recipient` using the allowance mechanism. `amount`
/// `is then deducted from the caller's allowance.
///
/// @dev Emits a {Transfer} event and an {Approval} event indicating the updated allowance. This is
/// not required by the Erc. See the note at the beginning of {Erc20}.
///
/// Requirements:
///
/// - `sender` and `recipient` cannot be the zero address.
/// - `sender` must have a balance of at least `amount`.
/// - The caller must have approed `sender` to spent at least `amount` tokens.
///
/// @return a boolean value indicating whether the operation succeeded.
function transferFrom(
address sender,
address recipient,
uint256 amount
) external returns (bool);
}
// SPDX-License-Identifier: WTFPL
// solhint-disable func-name-mixedcase
pragma solidity >=0.8.4;
import "./IErc20.sol";
/// @title IErc20Permit
/// @author Paul Razvan Berg
/// @notice Extension of Erc20 that allows token holders to use their tokens without sending any
/// transactions by setting the allowance with a signature using the `permit` method, and then spend
/// them via `transferFrom`.
/// @dev See https://eips.ethereum.org/EIPS/eip-2612.
interface IErc20Permit is IErc20 {
/// NON-CONSTANT FUNCTIONS ///
/// @notice Sets `amount` as the allowance of `spender` over `owner`'s tokens, assuming the latter's
/// signed approval.
///
/// @dev Emits an {Approval} event.
///
/// IMPORTANT: The same issues Erc20 `approve` has related to transaction
/// ordering also apply here.
///
/// Requirements:
///
/// - `owner` cannot be the zero address.
/// - `spender` cannot be the zero address.
/// - `deadline` must be a timestamp in the future.
/// - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner` over the Eip712-formatted
/// function arguments.
/// - The signature must use `owner`'s current nonce.
function permit(
address owner,
address spender,
uint256 amount,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) external;
/// CONSTANT FUNCTIONS ///
/// @notice The Eip712 domain's keccak256 hash.
function DOMAIN_SEPARATOR() external view returns (bytes32);
/// @notice Provides replay protection.
function nonces(address account) external view returns (uint256);
/// @notice keccak256("Permit(address owner,address spender,uint256 amount,uint256 nonce,uint256 deadline)");
function PERMIT_TYPEHASH() external view returns (bytes32);
/// @notice Eip712 version of this implementation.
function version() external view returns (string memory);
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.6;
import "./IOperatorStore.sol";
interface IOperatable {
function operatorStore() external view returns (IOperatorStore);
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.6;
interface IOperatorStore {
event SetOperator(
address indexed operator,
address indexed account,
uint256 indexed domain,
uint256[] permissionIndexes,
uint256 packed
);
function permissionsOf(
address _operator,
address _account,
uint256 _domain
) external view returns (uint256);
function hasPermission(
address _operator,
address _account,
uint256 _domain,
uint256 _permissionIndex
) external view returns (bool);
function hasPermissions(
address _operator,
address _account,
uint256 _domain,
uint256[] calldata _permissionIndexes
) external view returns (bool);
function setOperator(
address _operator,
uint256 _domain,
uint256[] calldata _permissionIndexes
) external;
function setOperators(
address[] calldata _operators,
uint256[] calldata _domains,
uint256[][] calldata _permissionIndexes
) external;
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.6;
import "@openzeppelin/contracts/token/ERC721/IERC721.sol";
import "./ITerminal.sol";
import "./IOperatorStore.sol";
interface IProjects is IERC721 {
event Create(
uint256 indexed projectId,
address indexed owner,
bytes32 indexed handle,
string uri,
ITerminal terminal,
address caller
);
event SetHandle(
uint256 indexed projectId,
bytes32 indexed handle,
address caller
);
event SetUri(uint256 indexed projectId, string uri, address caller);
event TransferHandle(
uint256 indexed projectId,
address indexed to,
bytes32 indexed handle,
bytes32 newHandle,
address caller
);
event ClaimHandle(
address indexed account,
uint256 indexed projectId,
bytes32 indexed handle,
address caller
);
event ChallengeHandle(
bytes32 indexed handle,
uint256 challengeExpiry,
address caller
);
event RenewHandle(
bytes32 indexed handle,
uint256 indexed projectId,
address caller
);
function count() external view returns (uint256);
function uriOf(uint256 _projectId) external view returns (string memory);
function handleOf(uint256 _projectId) external returns (bytes32 handle);
function projectFor(bytes32 _handle) external returns (uint256 projectId);
function transferAddressFor(bytes32 _handle)
external
returns (address receiver);
function challengeExpiryOf(bytes32 _handle) external returns (uint256);
function exists(uint256 _projectId) external view returns (bool);
function create(
address _owner,
bytes32 _handle,
string calldata _uri,
ITerminal _terminal
) external returns (uint256 id);
function setHandle(uint256 _projectId, bytes32 _handle) external;
function setUri(uint256 _projectId, string calldata _uri) external;
function transferHandle(
uint256 _projectId,
address _to,
bytes32 _newHandle
) external returns (bytes32 _handle);
function claimHandle(
bytes32 _handle,
address _for,
uint256 _projectId
) external;
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.6;
import "./ITerminalDirectory.sol";
interface ITerminal {
event Pay(
uint256 indexed fundingCycleId,
uint256 indexed projectId,
address indexed beneficiary,
uint256 amount,
string note,
address caller
);
event AddToBalance(
uint256 indexed projectId,
uint256 value,
address caller
);
event AllowMigration(ITerminal allowed);
event Migrate(
uint256 indexed projectId,
ITerminal indexed to,
uint256 _amount,
address caller
);
function terminalDirectory() external view returns (ITerminalDirectory);
function migrationIsAllowed(ITerminal _terminal)
external
view
returns (bool);
function pay(
uint256 _projectId,
address _beneficiary,
string calldata _memo,
bool _preferUnstakedTickets
) external payable returns (uint256 fundingCycleId);
function addToBalance(uint256 _projectId) external payable;
function allowMigration(ITerminal _contract) external;
function migrate(uint256 _projectId, ITerminal _to) external;
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.6;
import "./IDirectPaymentAddress.sol";
import "./ITerminal.sol";
import "./IProjects.sol";
import "./IProjects.sol";
interface ITerminalDirectory {
event DeployAddress(
uint256 indexed projectId,
string memo,
address indexed caller
);
event SetTerminal(
uint256 indexed projectId,
ITerminal indexed terminal,
address caller
);
event SetPayerPreferences(
address indexed account,
address beneficiary,
bool preferUnstakedTickets
);
function projects() external view returns (IProjects);
function terminalOf(uint256 _projectId) external view returns (ITerminal);
function beneficiaryOf(address _account) external returns (address);
function unstakedTicketsPreferenceOf(address _account)
external
returns (bool);
function addressesOf(uint256 _projectId)
external
view
returns (IDirectPaymentAddress[] memory);
function deployAddress(uint256 _projectId, string calldata _memo) external;
function setTerminal(uint256 _projectId, ITerminal _terminal) external;
function setPayerPreferences(
address _beneficiary,
bool _preferUnstakedTickets
) external;
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.6;
import "./ITerminalDirectory.sol";
interface ITerminalUtility {
function terminalDirectory() external view returns (ITerminalDirectory);
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.6;
import "./IProjects.sol";
import "./IOperatorStore.sol";
import "./ITickets.sol";
interface ITicketBooth {
event Issue(
uint256 indexed projectId,
string name,
string symbol,
address caller
);
event Print(
address indexed holder,
uint256 indexed projectId,
uint256 amount,
bool convertedTickets,
bool preferUnstakedTickets,
address controller
);
event Redeem(
address indexed holder,
uint256 indexed projectId,
uint256 amount,
uint256 stakedTickets,
bool preferUnstaked,
address controller
);
event Stake(
address indexed holder,
uint256 indexed projectId,
uint256 amount,
address caller
);
event Unstake(
address indexed holder,
uint256 indexed projectId,
uint256 amount,
address caller
);
event Lock(
address indexed holder,
uint256 indexed projectId,
uint256 amount,
address caller
);
event Unlock(
address indexed holder,
uint256 indexed projectId,
uint256 amount,
address caller
);
event Transfer(
address indexed holder,
uint256 indexed projectId,
address indexed recipient,
uint256 amount,
address caller
);
function ticketsOf(uint256 _projectId) external view returns (ITickets);
function projects() external view returns (IProjects);
function lockedBalanceOf(address _holder, uint256 _projectId)
external
view
returns (uint256);
function lockedBalanceBy(
address _operator,
address _holder,
uint256 _projectId
) external view returns (uint256);
function stakedBalanceOf(address _holder, uint256 _projectId)
external
view
returns (uint256);
function stakedTotalSupplyOf(uint256 _projectId)
external
view
returns (uint256);
function totalSupplyOf(uint256 _projectId) external view returns (uint256);
function balanceOf(address _holder, uint256 _projectId)
external
view
returns (uint256 _result);
function issue(
uint256 _projectId,
string calldata _name,
string calldata _symbol
) external;
function print(
address _holder,
uint256 _projectId,
uint256 _amount,
bool _preferUnstakedTickets
) external;
function redeem(
address _holder,
uint256 _projectId,
uint256 _amount,
bool _preferUnstaked
) external;
function stake(
address _holder,
uint256 _projectId,
uint256 _amount
) external;
function unstake(
address _holder,
uint256 _projectId,
uint256 _amount
) external;
function lock(
address _holder,
uint256 _projectId,
uint256 _amount
) external;
function unlock(
address _holder,
uint256 _projectId,
uint256 _amount
) external;
function transfer(
address _holder,
uint256 _projectId,
uint256 _amount,
address _recipient
) external;
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.6;
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
interface ITickets is IERC20 {
function print(address _account, uint256 _amount) external;
function redeem(address _account, uint256 _amount) external;
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.6;
import "./../interfaces/IOperatable.sol";
abstract contract Operatable is IOperatable {
modifier requirePermission(
address _account,
uint256 _domain,
uint256 _index
) {
require(
msg.sender == _account ||
operatorStore.hasPermission(
msg.sender,
_account,
_domain,
_index
),
"Operatable: UNAUTHORIZED"
);
_;
}
modifier requirePermissionAllowingWildcardDomain(
address _account,
uint256 _domain,
uint256 _index
) {
require(
msg.sender == _account ||
operatorStore.hasPermission(
msg.sender,
_account,
_domain,
_index
) ||
operatorStore.hasPermission(msg.sender, _account, 0, _index),
"Operatable: UNAUTHORIZED"
);
_;
}
modifier requirePermissionAcceptingAlternateAddress(
address _account,
uint256 _domain,
uint256 _index,
address _alternate
) {
require(
msg.sender == _account ||
operatorStore.hasPermission(
msg.sender,
_account,
_domain,
_index
) ||
msg.sender == _alternate,
"Operatable: UNAUTHORIZED"
);
_;
}
/// @notice A contract storing operator assignments.
IOperatorStore public immutable override operatorStore;
/**
@param _operatorStore A contract storing operator assignments.
*/
constructor(IOperatorStore _operatorStore) {
operatorStore = _operatorStore;
}
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.6;
library Operations {
uint256 public constant Configure = 1;
uint256 public constant PrintPreminedTickets = 2;
uint256 public constant Redeem = 3;
uint256 public constant Migrate = 4;
uint256 public constant SetHandle = 5;
uint256 public constant SetUri = 6;
uint256 public constant ClaimHandle = 7;
uint256 public constant RenewHandle = 8;
uint256 public constant Issue = 9;
uint256 public constant Stake = 10;
uint256 public constant Unstake = 11;
uint256 public constant Transfer = 12;
uint256 public constant Lock = 13;
uint256 public constant SetPayoutMods = 14;
uint256 public constant SetTicketMods = 15;
uint256 public constant SetTerminal = 16;
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../utils/Context.sol";
/**
* @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.
*/
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() {
_setOwner(_msgSender());
}
/**
* @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() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
_setOwner(address(0));
}
/**
* @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);
}
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.6;
import "./../interfaces/ITerminalUtility.sol";
abstract contract TerminalUtility is ITerminalUtility {
modifier onlyTerminal(uint256 _projectId) {
require(
address(terminalDirectory.terminalOf(_projectId)) == msg.sender,
"TerminalUtility: UNAUTHORIZED"
);
_;
}
/// @notice The direct deposit terminals.
ITerminalDirectory public immutable override terminalDirectory;
/**
@param _terminalDirectory A directory of a project's current Juicebox terminal to receive payments in.
*/
constructor(ITerminalDirectory _terminalDirectory) {
terminalDirectory = _terminalDirectory;
}
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.6;
import "./interfaces/ITicketBooth.sol";
import "./abstract/Operatable.sol";
import "./abstract/TerminalUtility.sol";
import "./libraries/Operations.sol";
import "./Tickets.sol";
/**
@notice
Manage Ticket printing, redemption, and account balances.
@dev
Tickets can be either represented internally staked, or as unstaked ERC-20s.
This contract manages these two representations and the conversion between the two.
@dev
The total supply of a project's tickets and the balance of each account are calculated in this contract.
*/
contract TicketBooth is TerminalUtility, Operatable, ITicketBooth {
// --- public immutable stored properties --- //
/// @notice The Projects contract which mints ERC-721's that represent project ownership and transfers.
IProjects public immutable override projects;
// --- public stored properties --- //
// Each project's ERC20 Ticket tokens.
mapping(uint256 => ITickets) public override ticketsOf;
// Each holder's balance of staked Tickets for each project.
mapping(address => mapping(uint256 => uint256))
public
override stakedBalanceOf;
// The total supply of 1155 tickets for each project.
mapping(uint256 => uint256) public override stakedTotalSupplyOf;
// The amount of each holders tickets that are locked.
mapping(address => mapping(uint256 => uint256))
public
override lockedBalanceOf;
// The amount of each holders tickets that are locked by each address.
mapping(address => mapping(address => mapping(uint256 => uint256)))
public
override lockedBalanceBy;
// --- external views --- //
/**
@notice
The total supply of tickets for each project, including staked and unstaked tickets.
@param _projectId The ID of the project to get the total supply of.
@return supply The total supply.
*/
function totalSupplyOf(uint256 _projectId)
external
view
override
returns (uint256 supply)
{
supply = stakedTotalSupplyOf[_projectId];
ITickets _tickets = ticketsOf[_projectId];
if (_tickets != ITickets(address(0)))
supply = supply + _tickets.totalSupply();
}
/**
@notice
The total balance of tickets a holder has for a specified project, including staked and unstaked tickets.
@param _holder The ticket holder to get a balance for.
@param _projectId The project to get the `_hodler`s balance of.
@return balance The balance.
*/
function balanceOf(address _holder, uint256 _projectId)
external
view
override
returns (uint256 balance)
{
balance = stakedBalanceOf[_holder][_projectId];
ITickets _ticket = ticketsOf[_projectId];
if (_ticket != ITickets(address(0)))
balance = balance + _ticket.balanceOf(_holder);
}
// --- external transactions --- //
/**
@param _projects A Projects contract which mints ERC-721's that represent project ownership and transfers.
@param _operatorStore A contract storing operator assignments.
@param _terminalDirectory A directory of a project's current Juicebox terminal to receive payments in.
*/
constructor(
IProjects _projects,
IOperatorStore _operatorStore,
ITerminalDirectory _terminalDirectory
) Operatable(_operatorStore) TerminalUtility(_terminalDirectory) {
projects = _projects;
}
/**
@notice
Issues an owner's ERC-20 Tickets that'll be used when unstaking tickets.
@dev
Deploys an owner's Ticket ERC-20 token contract.
@param _projectId The ID of the project being issued tickets.
@param _name The ERC-20's name. " Juicebox ticket" will be appended.
@param _symbol The ERC-20's symbol. "j" will be prepended.
*/
function issue(
uint256 _projectId,
string calldata _name,
string calldata _symbol
)
external
override
requirePermission(
projects.ownerOf(_projectId),
_projectId,
Operations.Issue
)
{
// There must be a name.
require((bytes(_name).length > 0), "TicketBooth::issue: EMPTY_NAME");
// There must be a symbol.
require(
(bytes(_symbol).length > 0),
"TicketBooth::issue: EMPTY_SYMBOL"
);
// Only one ERC20 ticket can be issued.
require(
ticketsOf[_projectId] == ITickets(address(0)),
"TicketBooth::issue: ALREADY_ISSUED"
);
// Create the contract in this TerminalV1 contract in order to have mint and burn privileges.
// Prepend the strings with standards.
ticketsOf[_projectId] = new Tickets(_name, _symbol);
emit Issue(_projectId, _name, _symbol, msg.sender);
}
/**
@notice
Print new tickets.
@dev
Only a project's current terminal can print its tickets.
@param _holder The address receiving the new tickets.
@param _projectId The project to which the tickets belong.
@param _amount The amount to print.
@param _preferUnstakedTickets Whether ERC20's should be converted automatically if they have been issued.
*/
function print(
address _holder,
uint256 _projectId,
uint256 _amount,
bool _preferUnstakedTickets
) external override onlyTerminal(_projectId) {
// An amount must be specified.
require(_amount > 0, "TicketBooth::print: NO_OP");
// Get a reference to the project's ERC20 tickets.
ITickets _tickets = ticketsOf[_projectId];
// If there exists ERC-20 tickets and the caller prefers these unstaked tickets.
bool _shouldUnstakeTickets = _preferUnstakedTickets &&
_tickets != ITickets(address(0));
if (_shouldUnstakeTickets) {
// Print the equivalent amount of ERC20s.
_tickets.print(_holder, _amount);
} else {
// Add to the staked balance and total supply.
stakedBalanceOf[_holder][_projectId] =
stakedBalanceOf[_holder][_projectId] +
_amount;
stakedTotalSupplyOf[_projectId] =
stakedTotalSupplyOf[_projectId] +
_amount;
}
emit Print(
_holder,
_projectId,
_amount,
_shouldUnstakeTickets,
_preferUnstakedTickets,
msg.sender
);
}
/**
@notice
Redeems tickets.
@dev
Only a project's current terminal can redeem its tickets.
@param _holder The address that owns the tickets being redeemed.
@param _projectId The ID of the project of the tickets being redeemed.
@param _amount The amount of tickets being redeemed.
@param _preferUnstaked If the preference is to redeem tickets that have been converted to ERC-20s.
*/
function redeem(
address _holder,
uint256 _projectId,
uint256 _amount,
bool _preferUnstaked
) external override onlyTerminal(_projectId) {
// Get a reference to the project's ERC20 tickets.
ITickets _tickets = ticketsOf[_projectId];
// Get a reference to the staked amount.
uint256 _unlockedStakedBalance = stakedBalanceOf[_holder][_projectId] -
lockedBalanceOf[_holder][_projectId];
// Get a reference to the number of tickets there are.
uint256 _unstakedBalanceOf = _tickets == ITickets(address(0))
? 0
: _tickets.balanceOf(_holder);
// There must be enough tickets.
// Prevent potential overflow by not relying on addition.
require(
(_amount < _unstakedBalanceOf &&
_amount < _unlockedStakedBalance) ||
(_amount >= _unstakedBalanceOf &&
_unlockedStakedBalance >= _amount - _unstakedBalanceOf) ||
(_amount >= _unlockedStakedBalance &&
_unstakedBalanceOf >= _amount - _unlockedStakedBalance),
"TicketBooth::redeem: INSUFFICIENT_FUNDS"
);
// The amount of tickets to redeem.
uint256 _unstakedTicketsToRedeem;
// If there's no balance, redeem no tickets
if (_unstakedBalanceOf == 0) {
_unstakedTicketsToRedeem = 0;
// If prefer converted, redeem tickets before redeeming staked tickets.
} else if (_preferUnstaked) {
_unstakedTicketsToRedeem = _unstakedBalanceOf >= _amount
? _amount
: _unstakedBalanceOf;
// Otherwise, redeem staked tickets before unstaked tickets.
} else {
_unstakedTicketsToRedeem = _unlockedStakedBalance >= _amount
? 0
: _amount - _unlockedStakedBalance;
}
// The amount of staked tickets to redeem.
uint256 _stakedTicketsToRedeem = _amount - _unstakedTicketsToRedeem;
// Redeem the tickets.
if (_unstakedTicketsToRedeem > 0)
_tickets.redeem(_holder, _unstakedTicketsToRedeem);
if (_stakedTicketsToRedeem > 0) {
// Reduce the holders balance and the total supply.
stakedBalanceOf[_holder][_projectId] =
stakedBalanceOf[_holder][_projectId] -
_stakedTicketsToRedeem;
stakedTotalSupplyOf[_projectId] =
stakedTotalSupplyOf[_projectId] -
_stakedTicketsToRedeem;
}
emit Redeem(
_holder,
_projectId,
_amount,
_unlockedStakedBalance,
_preferUnstaked,
msg.sender
);
}
/**
@notice
Stakes ERC20 tickets by burning their supply and creating an internal staked version.
@dev
Only a ticket holder or an operator can stake its tickets.
@param _holder The owner of the tickets to stake.
@param _projectId The ID of the project whos tickets are being staked.
@param _amount The amount of tickets to stake.
*/
function stake(
address _holder,
uint256 _projectId,
uint256 _amount
)
external
override
requirePermissionAllowingWildcardDomain(
_holder,
_projectId,
Operations.Stake
)
{
// Get a reference to the project's ERC20 tickets.
ITickets _tickets = ticketsOf[_projectId];
// Tickets must have been issued.
require(
_tickets != ITickets(address(0)),
"TicketBooth::stake: NOT_FOUND"
);
// Get a reference to the holder's current balance.
uint256 _unstakedBalanceOf = _tickets.balanceOf(_holder);
// There must be enough balance to stake.
require(
_unstakedBalanceOf >= _amount,
"TicketBooth::stake: INSUFFICIENT_FUNDS"
);
// Redeem the equivalent amount of ERC20s.
_tickets.redeem(_holder, _amount);
// Add the staked amount from the holder's balance.
stakedBalanceOf[_holder][_projectId] =
stakedBalanceOf[_holder][_projectId] +
_amount;
// Add the staked amount from the project's total supply.
stakedTotalSupplyOf[_projectId] =
stakedTotalSupplyOf[_projectId] +
_amount;
emit Stake(_holder, _projectId, _amount, msg.sender);
}
/**
@notice
Unstakes internal tickets by creating and distributing ERC20 tickets.
@dev
Only a ticket holder or an operator can unstake its tickets.
@param _holder The owner of the tickets to unstake.
@param _projectId The ID of the project whos tickets are being unstaked.
@param _amount The amount of tickets to unstake.
*/
function unstake(
address _holder,
uint256 _projectId,
uint256 _amount
)
external
override
requirePermissionAllowingWildcardDomain(
_holder,
_projectId,
Operations.Unstake
)
{
// Get a reference to the project's ERC20 tickets.
ITickets _tickets = ticketsOf[_projectId];
// Tickets must have been issued.
require(
_tickets != ITickets(address(0)),
"TicketBooth::unstake: NOT_FOUND"
);
// Get a reference to the amount of unstaked tickets.
uint256 _unlockedStakedTickets = stakedBalanceOf[_holder][_projectId] -
lockedBalanceOf[_holder][_projectId];
// There must be enough unlocked staked tickets to unstake.
require(
_unlockedStakedTickets >= _amount,
"TicketBooth::unstake: INSUFFICIENT_FUNDS"
);
// Subtract the unstaked amount from the holder's balance.
stakedBalanceOf[_holder][_projectId] =
stakedBalanceOf[_holder][_projectId] -
_amount;
// Subtract the unstaked amount from the project's total supply.
stakedTotalSupplyOf[_projectId] =
stakedTotalSupplyOf[_projectId] -
_amount;
// Print the equivalent amount of ERC20s.
_tickets.print(_holder, _amount);
emit Unstake(_holder, _projectId, _amount, msg.sender);
}
/**
@notice
Lock a project's tickets, preventing them from being redeemed and from converting to ERC20s.
@dev
Only a ticket holder or an operator can lock its tickets.
@param _holder The holder to lock tickets from.
@param _projectId The ID of the project whos tickets are being locked.
@param _amount The amount of tickets to lock.
*/
function lock(
address _holder,
uint256 _projectId,
uint256 _amount
)
external
override
requirePermissionAllowingWildcardDomain(
_holder,
_projectId,
Operations.Lock
)
{
// Amount must be greater than 0.
require(_amount > 0, "TicketBooth::lock: NO_OP");
// The holder must have enough tickets to lock.
require(
stakedBalanceOf[_holder][_projectId] -
lockedBalanceOf[_holder][_projectId] >=
_amount,
"TicketBooth::lock: INSUFFICIENT_FUNDS"
);
// Update the lock.
lockedBalanceOf[_holder][_projectId] =
lockedBalanceOf[_holder][_projectId] +
_amount;
lockedBalanceBy[msg.sender][_holder][_projectId] =
lockedBalanceBy[msg.sender][_holder][_projectId] +
_amount;
emit Lock(_holder, _projectId, _amount, msg.sender);
}
/**
@notice
Unlock a project's tickets.
@dev
The address that locked the tickets must be the address that unlocks the tickets.
@param _holder The holder to unlock tickets from.
@param _projectId The ID of the project whos tickets are being unlocked.
@param _amount The amount of tickets to unlock.
*/
function unlock(
address _holder,
uint256 _projectId,
uint256 _amount
) external override {
// Amount must be greater than 0.
require(_amount > 0, "TicketBooth::unlock: NO_OP");
// There must be enough locked tickets to unlock.
require(
lockedBalanceBy[msg.sender][_holder][_projectId] >= _amount,
"TicketBooth::unlock: INSUFFICIENT_FUNDS"
);
// Update the lock.
lockedBalanceOf[_holder][_projectId] =
lockedBalanceOf[_holder][_projectId] -
_amount;
lockedBalanceBy[msg.sender][_holder][_projectId] =
lockedBalanceBy[msg.sender][_holder][_projectId] -
_amount;
emit Unlock(_holder, _projectId, _amount, msg.sender);
}
/**
@notice
Allows a ticket holder to transfer its tickets to another account, without unstaking to ERC-20s.
@dev
Only a ticket holder or an operator can transfer its tickets.
@param _holder The holder to transfer tickets from.
@param _projectId The ID of the project whos tickets are being transfered.
@param _amount The amount of tickets to transfer.
@param _recipient The recipient of the tickets.
*/
function transfer(
address _holder,
uint256 _projectId,
uint256 _amount,
address _recipient
)
external
override
requirePermissionAllowingWildcardDomain(
_holder,
_projectId,
Operations.Transfer
)
{
// Can't transfer to the zero address.
require(
_recipient != address(0),
"TicketBooth::transfer: ZERO_ADDRESS"
);
// An address can't transfer to itself.
require(_holder != _recipient, "TicketBooth::transfer: IDENTITY");
// There must be an amount to transfer.
require(_amount > 0, "TicketBooth::transfer: NO_OP");
// Get a reference to the amount of unlocked staked tickets.
uint256 _unlockedStakedTickets = stakedBalanceOf[_holder][_projectId] -
lockedBalanceOf[_holder][_projectId];
// There must be enough unlocked staked tickets to transfer.
require(
_amount <= _unlockedStakedTickets,
"TicketBooth::transfer: INSUFFICIENT_FUNDS"
);
// Subtract from the holder.
stakedBalanceOf[_holder][_projectId] =
stakedBalanceOf[_holder][_projectId] -
_amount;
// Add the tickets to the recipient.
stakedBalanceOf[_recipient][_projectId] =
stakedBalanceOf[_recipient][_projectId] +
_amount;
emit Transfer(_holder, _projectId, _recipient, _amount, msg.sender);
}
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.6;
import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import "@openzeppelin/contracts/token/ERC20/extensions/draft-ERC20Permit.sol";
import "@paulrberg/contracts/token/erc20/Erc20Permit.sol";
import "./interfaces/ITickets.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
contract Tickets is ERC20, ERC20Permit, Ownable, ITickets {
constructor(string memory _name, string memory _symbol)
ERC20(_name, _symbol)
ERC20Permit(_name)
{}
function print(address _account, uint256 _amount)
external
override
onlyOwner
{
return _mint(_account, _amount);
}
function redeem(address _account, uint256 _amount)
external
override
onlyOwner
{
return _burn(_account, _amount);
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "./ECDSA.sol";
/**
* @dev https://eips.ethereum.org/EIPS/eip-712[EIP 712] is a standard for hashing and signing of typed structured data.
*
* The encoding specified in the EIP is very generic, and such a generic implementation in Solidity is not feasible,
* thus this contract does not implement the encoding itself. Protocols need to implement the type-specific encoding
* they need in their contracts using a combination of `abi.encode` and `keccak256`.
*
* This contract implements the EIP 712 domain separator ({_domainSeparatorV4}) that is used as part of the encoding
* scheme, and the final step of the encoding to obtain the message digest that is then signed via ECDSA
* ({_hashTypedDataV4}).
*
* The implementation of the domain separator was designed to be as efficient as possible while still properly updating
* the chain id to protect against replay attacks on an eventual fork of the chain.
*
* NOTE: This contract implements the version of the encoding known as "v4", as implemented by the JSON RPC method
* https://docs.metamask.io/guide/signing-data.html[`eth_signTypedDataV4` in MetaMask].
*
* _Available since v3.4._
*/
abstract contract EIP712 {
/* solhint-disable var-name-mixedcase */
// Cache the domain separator as an immutable value, but also store the chain id that it corresponds to, in order to
// invalidate the cached domain separator if the chain id changes.
bytes32 private immutable _CACHED_DOMAIN_SEPARATOR;
uint256 private immutable _CACHED_CHAIN_ID;
bytes32 private immutable _HASHED_NAME;
bytes32 private immutable _HASHED_VERSION;
bytes32 private immutable _TYPE_HASH;
/* solhint-enable var-name-mixedcase */
/**
* @dev Initializes the domain separator and parameter caches.
*
* The meaning of `name` and `version` is specified in
* https://eips.ethereum.org/EIPS/eip-712#definition-of-domainseparator[EIP 712]:
*
* - `name`: the user readable name of the signing domain, i.e. the name of the DApp or the protocol.
* - `version`: the current major version of the signing domain.
*
* NOTE: These parameters cannot be changed except through a xref:learn::upgrading-smart-contracts.adoc[smart
* contract upgrade].
*/
constructor(string memory name, string memory version) {
bytes32 hashedName = keccak256(bytes(name));
bytes32 hashedVersion = keccak256(bytes(version));
bytes32 typeHash = keccak256(
"EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"
);
_HASHED_NAME = hashedName;
_HASHED_VERSION = hashedVersion;
_CACHED_CHAIN_ID = block.chainid;
_CACHED_DOMAIN_SEPARATOR = _buildDomainSeparator(typeHash, hashedName, hashedVersion);
_TYPE_HASH = typeHash;
}
/**
* @dev Returns the domain separator for the current chain.
*/
function _domainSeparatorV4() internal view returns (bytes32) {
if (block.chainid == _CACHED_CHAIN_ID) {
return _CACHED_DOMAIN_SEPARATOR;
} else {
return _buildDomainSeparator(_TYPE_HASH, _HASHED_NAME, _HASHED_VERSION);
}
}
function _buildDomainSeparator(
bytes32 typeHash,
bytes32 nameHash,
bytes32 versionHash
) private view returns (bytes32) {
return keccak256(abi.encode(typeHash, nameHash, versionHash, block.chainid, address(this)));
}
/**
* @dev Given an already https://eips.ethereum.org/EIPS/eip-712#definition-of-hashstruct[hashed struct], this
* function returns the hash of the fully encoded EIP712 message for this domain.
*
* This hash can be used together with {ECDSA-recover} to obtain the signer of a message. For example:
*
* ```solidity
* bytes32 digest = _hashTypedDataV4(keccak256(abi.encode(
* keccak256("Mail(address to,string contents)"),
* mailTo,
* keccak256(bytes(mailContents))
* )));
* address signer = ECDSA.recover(digest, signature);
* ```
*/
function _hashTypedDataV4(bytes32 structHash) internal view virtual returns (bytes32) {
return ECDSA.toTypedDataHash(_domainSeparatorV4(), structHash);
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "./draft-IERC20Permit.sol";
import "../ERC20.sol";
import "../../../utils/cryptography/draft-EIP712.sol";
import "../../../utils/cryptography/ECDSA.sol";
import "../../../utils/Counters.sol";
/**
* @dev Implementation of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
* https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
*
* Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
* presenting a message signed by the account. By not relying on `{IERC20-approve}`, the token holder account doesn't
* need to send a transaction, and thus is not required to hold Ether at all.
*
* _Available since v3.4._
*/
abstract contract ERC20Permit is ERC20, IERC20Permit, EIP712 {
using Counters for Counters.Counter;
mapping(address => Counters.Counter) private _nonces;
// solhint-disable-next-line var-name-mixedcase
bytes32 private immutable _PERMIT_TYPEHASH =
keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");
/**
* @dev Initializes the {EIP712} domain separator using the `name` parameter, and setting `version` to `"1"`.
*
* It's a good idea to use the same `name` that is defined as the ERC20 token name.
*/
constructor(string memory name) EIP712(name, "1") {}
/**
* @dev See {IERC20Permit-permit}.
*/
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) public virtual override {
require(block.timestamp <= deadline, "ERC20Permit: expired deadline");
bytes32 structHash = keccak256(abi.encode(_PERMIT_TYPEHASH, owner, spender, value, _useNonce(owner), deadline));
bytes32 hash = _hashTypedDataV4(structHash);
address signer = ECDSA.recover(hash, v, r, s);
require(signer == owner, "ERC20Permit: invalid signature");
_approve(owner, spender, value);
}
/**
* @dev See {IERC20Permit-nonces}.
*/
function nonces(address owner) public view virtual override returns (uint256) {
return _nonces[owner].current();
}
/**
* @dev See {IERC20Permit-DOMAIN_SEPARATOR}.
*/
// solhint-disable-next-line func-name-mixedcase
function DOMAIN_SEPARATOR() external view override returns (bytes32) {
return _domainSeparatorV4();
}
/**
* @dev "Consume a nonce": return the current value and increment.
*
* _Available since v4.1._
*/
function _useNonce(address owner) internal virtual returns (uint256 current) {
Counters.Counter storage nonce = _nonces[owner];
current = nonce.current();
nonce.increment();
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
* https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
*
* Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
* presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
* need to send a transaction, and thus is not required to hold Ether at all.
*/
interface IERC20Permit {
/**
* @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
* given ``owner``'s signed approval.
*
* IMPORTANT: The same issues {IERC20-approve} has related to transaction
* ordering also apply here.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `deadline` must be a timestamp in the future.
* - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
* over the EIP712-formatted function arguments.
* - the signature must use ``owner``'s current nonce (see {nonces}).
*
* For more information on the signature format, see the
* https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
* section].
*/
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) external;
/**
* @dev Returns the current nonce for `owner`. This value must be
* included whenever a signature is generated for {permit}.
*
* Every successful call to {permit} increases ``owner``'s nonce by one. This
* prevents a signature from being used multiple times.
*/
function nonces(address owner) external view returns (uint256);
/**
* @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
*/
// solhint-disable-next-line func-name-mixedcase
function DOMAIN_SEPARATOR() external view returns (bytes32);
}
{
"compilationTarget": {
"contracts/TicketBooth.sol": "TicketBooth"
},
"evmVersion": "berlin",
"libraries": {},
"metadata": {
"bytecodeHash": "ipfs"
},
"optimizer": {
"enabled": true,
"runs": 10000
},
"remappings": []
}[{"inputs":[{"internalType":"contract IProjects","name":"_projects","type":"address"},{"internalType":"contract IOperatorStore","name":"_operatorStore","type":"address"},{"internalType":"contract ITerminalDirectory","name":"_terminalDirectory","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"projectId","type":"uint256"},{"indexed":false,"internalType":"string","name":"name","type":"string"},{"indexed":false,"internalType":"string","name":"symbol","type":"string"},{"indexed":false,"internalType":"address","name":"caller","type":"address"}],"name":"Issue","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"holder","type":"address"},{"indexed":true,"internalType":"uint256","name":"projectId","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"address","name":"caller","type":"address"}],"name":"Lock","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"holder","type":"address"},{"indexed":true,"internalType":"uint256","name":"projectId","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"bool","name":"convertedTickets","type":"bool"},{"indexed":false,"internalType":"bool","name":"preferUnstakedTickets","type":"bool"},{"indexed":false,"internalType":"address","name":"controller","type":"address"}],"name":"Print","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"holder","type":"address"},{"indexed":true,"internalType":"uint256","name":"projectId","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"stakedTickets","type":"uint256"},{"indexed":false,"internalType":"bool","name":"preferUnstaked","type":"bool"},{"indexed":false,"internalType":"address","name":"controller","type":"address"}],"name":"Redeem","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"holder","type":"address"},{"indexed":true,"internalType":"uint256","name":"projectId","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"address","name":"caller","type":"address"}],"name":"Stake","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"holder","type":"address"},{"indexed":true,"internalType":"uint256","name":"projectId","type":"uint256"},{"indexed":true,"internalType":"address","name":"recipient","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"address","name":"caller","type":"address"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"holder","type":"address"},{"indexed":true,"internalType":"uint256","name":"projectId","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"address","name":"caller","type":"address"}],"name":"Unlock","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"holder","type":"address"},{"indexed":true,"internalType":"uint256","name":"projectId","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"address","name":"caller","type":"address"}],"name":"Unstake","type":"event"},{"inputs":[{"internalType":"address","name":"_holder","type":"address"},{"internalType":"uint256","name":"_projectId","type":"uint256"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"balance","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_projectId","type":"uint256"},{"internalType":"string","name":"_name","type":"string"},{"internalType":"string","name":"_symbol","type":"string"}],"name":"issue","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_holder","type":"address"},{"internalType":"uint256","name":"_projectId","type":"uint256"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"lock","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"},{"internalType":"uint256","name":"","type":"uint256"}],"name":"lockedBalanceBy","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"uint256","name":"","type":"uint256"}],"name":"lockedBalanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"operatorStore","outputs":[{"internalType":"contract IOperatorStore","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_holder","type":"address"},{"internalType":"uint256","name":"_projectId","type":"uint256"},{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"bool","name":"_preferUnstakedTickets","type":"bool"}],"name":"print","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"projects","outputs":[{"internalType":"contract IProjects","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_holder","type":"address"},{"internalType":"uint256","name":"_projectId","type":"uint256"},{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"bool","name":"_preferUnstaked","type":"bool"}],"name":"redeem","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_holder","type":"address"},{"internalType":"uint256","name":"_projectId","type":"uint256"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"stake","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"uint256","name":"","type":"uint256"}],"name":"stakedBalanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"stakedTotalSupplyOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"terminalDirectory","outputs":[{"internalType":"contract ITerminalDirectory","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"ticketsOf","outputs":[{"internalType":"contract ITickets","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_projectId","type":"uint256"}],"name":"totalSupplyOf","outputs":[{"internalType":"uint256","name":"supply","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_holder","type":"address"},{"internalType":"uint256","name":"_projectId","type":"uint256"},{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"address","name":"_recipient","type":"address"}],"name":"transfer","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_holder","type":"address"},{"internalType":"uint256","name":"_projectId","type":"uint256"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"unlock","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_holder","type":"address"},{"internalType":"uint256","name":"_projectId","type":"uint256"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"unstake","outputs":[],"stateMutability":"nonpayable","type":"function"}]