Description:
Multi-signature wallet contract requiring multiple confirmations for transaction execution.
Blockchain: Ethereum
Source Code: View Code On The Blockchain
Solidity Source Code:
{{
"language": "Solidity",
"sources": {
"invest4b_presale.sol": {
"content": "// SPDX-License-Identifier: MIT\r
pragma solidity 0.8.27;\r
\r
import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol";\r
import "@openzeppelin/contracts-upgradeable/token/ERC20/IERC20Upgradeable.sol";\r
import "@openzeppelin/contracts-upgradeable/token/ERC20/extensions/IERC20MetadataUpgradeable.sol";\r
import "@openzeppelin/contracts-upgradeable/security/PausableUpgradeable.sol";\r
import "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol";\r
import "@openzeppelin/contracts-upgradeable/security/ReentrancyGuardUpgradeable.sol";\r
import "@openzeppelin/contracts-upgradeable/token/ERC20/utils/SafeERC20Upgradeable.sol";\r
import "@openzeppelin/contracts-upgradeable/proxy/utils/UUPSUpgradeable.sol";\r
\r
contract Invest4bPresale is\r
Initializable,\r
OwnableUpgradeable,\r
UUPSUpgradeable,\r
ReentrancyGuardUpgradeable,\r
PausableUpgradeable\r
{\r
using SafeERC20Upgradeable for IERC20Upgradeable;\r
\r
// -----------------------------------------------------------------------\r
// Constants\r
// -----------------------------------------------------------------------\r
\r
uint256 private constant TOKEN_DECIMALS = 18; // sold token decimals\r
uint256 private constant PRICE_DECIMALS = 18; // USD price decimals (1 USD = 1e18)\r
\r
// -----------------------------------------------------------------------\r
// Types\r
// -----------------------------------------------------------------------\r
\r
struct Round {\r
uint256 startTime; // round start (unix)\r
uint256 endTime; // round end (unix)\r
uint256 priceUsd; // 1e18 USD per token\r
uint256 tokenAllocation; // 18 decimals\r
uint256 tokensSold; // 18 decimals\r
uint256 reserveUsed; // 18 decimals\r
}\r
\r
// -----------------------------------------------------------------------\r
// Storage\r
// -----------------------------------------------------------------------\r
\r
// Accepted stables and the token being sold\r
IERC20Upgradeable public USDCInterface;\r
IERC20Upgradeable public USDTInterface;\r
IERC20Upgradeable public tokenInterface;\r
\r
// Rounds\r
Round[] public rounds;\r
uint256 public currRoundIdx;\r
\r
// Totals and reserve\r
uint256 public totalSoldTokens; // 18 decimals\r
uint256 public reserveTokens; // 18 decimals (capacity for oversells across rounds)\r
uint256 public reserveUsed; // 18 decimals\r
\r
// Global window\r
uint256 public presaleStartTime;\r
uint256 public presaleEndTime;\r
\r
// USD accounting (36 decimals: token 1e18 * price 1e18)\r
uint256 public usdRaised; // 1e36\r
uint256 public minUsdCost; // 1e36\r
uint256 public maxUsdPerUser; // 1e36\r
\r
// VIP accounting (separate from rounds/reserve)\r
uint256 public vipUsdRaised; // 1e36 total raised via VIP pricing\r
uint256 public vipUsdCap36; // 1e36 global cap for VIP purchases\r
uint256 public vipSoldTokens; // 18 decimals total tokens sold via VIP pricing\r
\r
// Per-user accounting\r
mapping(address => uint256) public userTotalUsdInvested; // 1e36\r
mapping(address => bool) public approvedForHighInvestment; // bypass maxUsdPerUser\r
\r
// Roles / endpoints\r
address public kycWallet; // approves "high" investments\r
address public feeReceiver; // receives USDC/USDT\r
address public technicalRole; // sets VIP pricing\r
\r
// VIP pricing (18-decimal price + expiry)\r
mapping(address => uint256) public vipPriceUsd; // 1e18 USD per token override\r
mapping(address => uint256) public vipPriceExpiry; // unix timestamp; price valid while now <= expiry\r
\r
// Ultra investment gate (optional usage pattern)\r
mapping(address => bool) public approvedForUltraInvestment;\r
\r
// -----------------------------------------------------------------------\r
// Events\r
// -----------------------------------------------------------------------\r
\r
event BuyerRegistered(address indexed buyer);\r
event BulkPurchaseRecorded(address indexed buyer, uint256 amount, uint256 roundIndex, string source);\r
event BulkPurchasesRecorded(uint256 totalPurchases, uint256 totalAmount, string source);\r
\r
event KYCWalletUpdated(address indexed oldKycWallet, address indexed newKycWallet);\r
event FeeReceiverUpdated(address indexed oldFeeReceiver, address indexed newFeeReceiver);\r
event TechnicalRoleUpdated(address indexed oldTech, address indexed newTech);\r
\r
event KYCApprovalUpdated(address indexed user, bool approved);\r
event UltraInvestmentApprovalUpdated(address indexed user, bool approved);\r
\r
event VipPriceSet(address indexed user, uint256 priceUsd, uint256 validUntil);\r
event VipPriceCleared(address indexed user);\r
\r
event ReserveUsed(uint256 roundIndex, uint256 amount, uint256 totalReserveUsed);\r
event RoundTransitioned(uint256 fromRound, uint256 toRound, uint256 unsoldTokens);\r
\r
// New events for VIP cap/accounting\r
event VipPurchaseRecorded(address indexed buyer, uint256 usdCost36, uint256 tokensBought);\r
event VipCapUpdated(uint256 oldCap36, uint256 newCap36);\r
\r
// -----------------------------------------------------------------------\r
// Initialization / Upgrade\r
// -----------------------------------------------------------------------\r
\r
constructor() {\r
_disableInitializers();\r
}\r
\r
/**\r
* @notice Initialize the upgradeable contract.\r
*/\r
function initialize(\r
address usdc,\r
address usdt,\r
address saleToken,\r
address kyc,\r
address fee,\r
address tech,\r
uint256 start,\r
uint256 end,\r
uint256 minUsd36,\r
uint256 maxUsd36,\r
uint256 reserveTokens_\r
) external initializer {\r
__Ownable_init(msg.sender);\r
__UUPSUpgradeable_init();\r
__ReentrancyGuard_init();\r
__Pausable_init();\r
\r
USDCInterface = IERC20Upgradeable(usdc);\r
USDTInterface = IERC20Upgradeable(usdt);\r
tokenInterface = IERC20Upgradeable(saleToken);\r
\r
kycWallet = kyc;\r
feeReceiver = fee;\r
technicalRole = tech;\r
\r
presaleStartTime = start;\r
presaleEndTime = end;\r
minUsdCost = minUsd36;\r
maxUsdPerUser = maxUsd36;\r
\r
reserveTokens = reserveTokens_;\r
currRoundIdx = 0;\r
\r
// Set default VIP cap to $250,000,000 at 1e36 scale\r
vipUsdCap36 = 290_697_674 * 10 ** 36;\r
}\r
\r
function _authorizeUpgrade(address newImplementation) internal override onlyOwner {\r
require(newImplementation != address(0), "Invalid implementation");\r
}\r
\r
// -----------------------------------------------------------------------\r
// Modifiers\r
// -----------------------------------------------------------------------\r
\r
modifier presaleEntryGuard() {\r
require(block.timestamp >= presaleStartTime, "Presale not started");\r
require(block.timestamp <= presaleEndTime, "Presale ended");\r
require(rounds.length > 0, "No rounds configured");\r
_;\r
}\r
\r
modifier onlyKYC() {\r
require(msg.sender == kycWallet, "Only KYC wallet");\r
_;\r
}\r
\r
modifier onlyTechnical() {\r
require(msg.sender == technicalRole, "Only technical role");\r
_;\r
}\r
\r
// -----------------------------------------------------------------------\r
// Buying (USDC / USDT)\r
// -----------------------------------------------------------------------\r
\r
function buyWithUSDT(uint256 usdAmount)\r
external\r
nonReentrant\r
presaleEntryGuard\r
whenNotPaused\r
returns (bool)\r
{\r
_handleStableBuy(USDTInterface, usdAmount);\r
return true;\r
}\r
\r
function buyWithUSDC(uint256 usdAmount)\r
external\r
nonReentrant\r
presaleEntryGuard\r
whenNotPaused\r
returns (bool)\r
{\r
_handleStableBuy(USDCInterface, usdAmount);\r
return true;\r
}\r
\r
/**\r
* @dev Core purchase logic for stablecoins.\r
*\r
* Math:\r
* scale = 10^(TOKEN_DECIMALS + PRICE_DECIMALS - stableDecimals) = 10^(36 - stableDecimals)\r
* usdCost36 = usdAmount * scale // 1e36 USD\r
* tokensToBuy = usdCost36 / priceUsd // -> 18-dec token amount (since priceUsd is 1e18)\r
*/\r
function _handleStableBuy(IERC20Upgradeable stable, uint256 usdAmount) internal {\r
_checkAndTransitionRound();\r
\r
(uint256 priceUsd, bool isVip) = currentPriceFor(msg.sender); // 1e18 USD per token\r
\r
// Scale buyer amount from stable decimals to 1e36 USD.\r
uint256 scale = _stableToUsd36Scale(stable);\r
uint256 usdCost36 = usdAmount * scale;\r
require(usdCost36 >= minUsdCost, "Below min");\r
\r
// Per-user limit / approval gates (with optional ultra tier).\r
uint256 newTotal = userTotalUsdInvested[msg.sender] + usdCost36;\r
uint256 ultraLimit = 10_000_000 * 10 ** 36; // $10M at 1e36\r
\r
require(\r
newTotal <= maxUsdPerUser\r
|| (newTotal < ultraLimit && approvedForHighInvestment[msg.sender])\r
|| (newTotal >= ultraLimit && approvedForUltraInvestment[msg.sender]),\r
newTotal >= ultraLimit\r
? "Above ultra limit: need ultra approval"\r
: "Above max per user: need high approval"\r
);\r
\r
// Compute tokens and ensure inventory BEFORE taking funds.\r
uint256 tokensToBuy = usdCost36 / priceUsd; // 18 decimals (rounds down)\r
require(tokensToBuy > 0, "Amount too small");\r
require(tokenInterface.balanceOf(address(this)) >= tokensToBuy, "Insufficient inventory");\r
\r
// Pull funds to fee receiver.\r
stable.safeTransferFrom(msg.sender, feeReceiver, usdAmount);\r
\r
// Common bookkeeping\r
usdRaised += usdCost36;\r
userTotalUsdInvested[msg.sender] = newTotal;\r
totalSoldTokens += tokensToBuy;\r
\r
if (isVip) {\r
// VIP path: does not affect rounds or reserves, but enforces global VIP cap\r
require(usdCost36 > 11_627_900e36, "Can't buy lower than 10 million.");\r
require(vipUsdRaised + usdCost36 <= vipUsdCap36, "VIP cap exceeded");\r
vipUsdRaised += usdCost36;\r
vipSoldTokens += tokensToBuy;\r
\r
// Deliver tokens\r
tokenInterface.safeTransfer(msg.sender, tokensToBuy);\r
\r
emit VipPurchaseRecorded(msg.sender, usdCost36, tokensToBuy);\r
emit BuyerRegistered(msg.sender);\r
} else {\r
// Standard path: record sale against round/reserve\r
_recordSale(tokensToBuy);\r
\r
// Deliver tokens\r
tokenInterface.safeTransfer(msg.sender, tokensToBuy);\r
\r
emit BuyerRegistered(msg.sender);\r
}\r
}\r
\r
// -----------------------------------------------------------------------\r
// Views / Price helpers\r
// -----------------------------------------------------------------------\r
\r
function currentPriceFor(address user) public view returns (uint256 priceUsd, bool isVipActive) {\r
if (vipPriceUsd[user] > 0 && block.timestamp <= vipPriceExpiry[user]) {\r
return (vipPriceUsd[user], true);\r
}\r
require(currRoundIdx < rounds.length, "No active round");\r
return (rounds[currRoundIdx].priceUsd, false);\r
}\r
\r
// -----------------------------------------------------------------------\r
// Internal helpers\r
// -----------------------------------------------------------------------\r
\r
function _stableToUsd36Scale(IERC20Upgradeable stable) internal view returns (uint256) {\r
uint256 dec = IERC20MetadataUpgradeable(address(stable)).decimals();\r
require(dec <= TOKEN_DECIMALS + PRICE_DECIMALS, "Stable decimals too large"); // <= 36\r
return 10 ** (TOKEN_DECIMALS + PRICE_DECIMALS - dec);\r
}\r
\r
function _recordSale(uint256 amount) internal {\r
Round storage r = rounds[currRoundIdx];\r
uint256 remaining = r.tokenAllocation - r.tokensSold;\r
\r
if (amount <= remaining) {\r
r.tokensSold += amount;\r
} else {\r
uint256 fromReserve = amount - remaining;\r
require(reserveUsed + fromReserve <= reserveTokens, "Reserve low");\r
r.tokensSold += remaining;\r
r.reserveUsed += fromReserve;\r
reserveUsed += fromReserve;\r
emit ReserveUsed(currRoundIdx, fromReserve, reserveUsed);\r
}\r
}\r
\r
function _checkAndTransitionRound() internal {\r
require(currRoundIdx < rounds.length, "All rounds done");\r
\r
while (currRoundIdx < rounds.length) {\r
Round storage r = rounds[currRoundIdx];\r
if (block.timestamp > r.endTime && currRoundIdx + 1 < rounds.length) {\r
uint256 unsold = r.tokenAllocation - r.tokensSold;\r
if (unsold > 0) {\r
rounds[currRoundIdx + 1].tokenAllocation += unsold;\r
emit RoundTransitioned(currRoundIdx, currRoundIdx + 1, unsold);\r
}\r
currRoundIdx++;\r
} else {\r
break;\r
}\r
}\r
}\r
\r
// -----------------------------------------------------------------------\r
// Admin: Presale configuration (owner)\r
// -----------------------------------------------------------------------\r
\r
function addRound(\r
uint256 startTime,\r
uint256 endTime,\r
uint256 priceUsd,\r
uint256 tokenAllocation\r
) external onlyOwner {\r
require(startTime < endTime, "Bad round time");\r
rounds.push(\r
Round({\r
startTime: startTime,\r
endTime: endTime,\r
priceUsd: priceUsd,\r
tokenAllocation: tokenAllocation,\r
tokensSold: 0,\r
reserveUsed: 0\r
})\r
);\r
}\r
\r
function configurePresale(\r
uint256 start,\r
uint256 end,\r
uint256 minUsd36,\r
uint256 maxUsd36,\r
Round[] calldata roundsInput\r
) external onlyOwner {\r
require(start < end, "Bad times");\r
\r
presaleStartTime = start;\r
presaleEndTime = end;\r
minUsdCost = minUsd36;\r
maxUsdPerUser = maxUsd36;\r
\r
delete rounds;\r
for (uint256 i = 0; i < roundsInput.length; i++) {\r
require(roundsInput[i].startTime < roundsInput[i].endTime, "Bad round time");\r
rounds.push(\r
Round({\r
startTime: roundsInput[i].startTime,\r
endTime: roundsInput[i].endTime,\r
priceUsd: roundsInput[i].priceUsd,\r
tokenAllocation: roundsInput[i].tokenAllocation,\r
tokensSold: 0,\r
reserveUsed: 0\r
})\r
);\r
}\r
currRoundIdx = 0;\r
}\r
\r
function updateRound(\r
uint256 index,\r
uint256 start,\r
uint256 end,\r
uint256 priceUsd,\r
uint256 allocation\r
) external onlyOwner {\r
require(index < rounds.length, "Invalid round");\r
require(start < end, "Bad times");\r
Round storage r = rounds[index];\r
require(block.timestamp < r.startTime, "Round already active");\r
r.startTime = start;\r
r.endTime = end;\r
r.priceUsd = priceUsd;\r
r.tokenAllocation = allocation;\r
}\r
\r
function extendPresaleEndTime(uint256 newEnd) external onlyOwner {\r
presaleEndTime = newEnd;\r
}\r
\r
function setStartTime(uint256 newStart) external onlyOwner {\r
presaleStartTime = newStart;\r
}\r
\r
function setReserveTokens(uint256 amount) external onlyOwner {\r
reserveTokens = amount;\r
}\r
\r
// -----------------------------------------------------------------------\r
// Admin: Roles & approvals\r
// -----------------------------------------------------------------------\r
\r
function setUserApprovedForUltraInvestment(address user, bool approved) external onlyTechnical {\r
approvedForUltraInvestment[user] = approved;\r
emit UltraInvestmentApprovalUpdated(user, approved);\r
}\r
\r
function setUserApprovedForHighInvestment(address user, bool approved) external onlyKYC {\r
approvedForHighInvestment[user] = approved;\r
emit KYCApprovalUpdated(user, approved);\r
}\r
\r
function setTechnicalRole(address _new) external onlyOwner {\r
emit TechnicalRoleUpdated(technicalRole, _new);\r
technicalRole = _new;\r
}\r
\r
function setKYCWallet(address _kyc) external onlyOwner {\r
emit KYCWalletUpdated(kycWallet, _kyc);\r
kycWallet = _kyc;\r
}\r
\r
function setFeeReceiver(address _new) external onlyOwner {\r
emit FeeReceiverUpdated(feeReceiver, _new);\r
feeReceiver = _new;\r
}\r
\r
// -----------------------------------------------------------------------\r
// Admin: VIP pricing (technical role)\r
// -----------------------------------------------------------------------\r
\r
function setVipPrice(address user, uint256 priceUsd, uint256 validUntil) external onlyTechnical {\r
require(user != address(0), "Zero user");\r
require(priceUsd > 0, "Zero price");\r
require(validUntil > block.timestamp, "Expiry not in future");\r
vipPriceUsd[user] = priceUsd;\r
vipPriceExpiry[user] = validUntil;\r
emit VipPriceSet(user, priceUsd, validUntil);\r
}\r
\r
function clearVipPrice(address user) external onlyTechnical {\r
vipPriceUsd[user] = 0;\r
vipPriceExpiry[user] = 0;\r
emit VipPriceCleared(user);\r
}\r
\r
/**\r
* @notice Owner can adjust the global VIP cap (1e36 USD units).\r
*/\r
function setVipUsdCap36(uint256 newCap36) external onlyOwner {\r
uint256 old = vipUsdCap36;\r
vipUsdCap36 = newCap36;\r
emit VipCapUpdated(old, newCap36);\r
}\r
\r
// -----------------------------------------------------------------------\r
// Withdraw / Pause\r
// -----------------------------------------------------------------------\r
\r
function withdraw(address _token) external onlyOwner {\r
uint256 bal;\r
if (_token == address(0)) {\r
bal = address(this).balance;\r
require(bal > 0, "No ETH");\r
(bool ok, ) = payable(owner()).call{value: bal}("");\r
require(ok, "Send fail");\r
} else {\r
IERC20Upgradeable t = IERC20Upgradeable(_token);\r
bal = t.balanceOf(address(this));\r
require(bal > 0, "No tokens");\r
t.safeTransfer(owner(), bal);\r
}\r
}\r
\r
function pause() external onlyOwner {\r
_pause();\r
}\r
\r
function unpause() external onlyOwner {\r
_unpause();\r
}\r
}\r
"
},
"@openzeppelin/contracts-upgradeable/proxy/utils/UUPSUpgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.3.0) (proxy/utils/UUPSUpgradeable.sol)
pragma solidity ^0.8.22;
import {IERC1822Proxiable} from "@openzeppelin/contracts/interfaces/draft-IERC1822.sol";
import {ERC1967Utils} from "@openzeppelin/contracts/proxy/ERC1967/ERC1967Utils.sol";
import {Initializable} from "./Initializable.sol";
/**
* @dev An upgradeability mechanism designed for UUPS proxies. The functions included here can perform an upgrade of an
* {ERC1967Proxy}, when this contract is set as the implementation behind such a proxy.
*
* A security mechanism ensures that an upgrade does not turn off upgradeability accidentally, although this risk is
* reinstated if the upgrade retains upgradeability but removes the security mechanism, e.g. by replacing
* `UUPSUpgradeable` with a custom implementation of upgrades.
*
* The {_authorizeUpgrade} function must be overridden to include access restriction to the upgrade mechanism.
*/
abstract contract UUPSUpgradeable is Initializable, IERC1822Proxiable {
/// @custom:oz-upgrades-unsafe-allow state-variable-immutable
address private immutable __self = address(this);
/**
* @dev The version of the upgrade interface of the contract. If this getter is missing, both `upgradeTo(address)`
* and `upgradeToAndCall(address,bytes)` are present, and `upgradeTo` must be used if no function should be called,
* while `upgradeToAndCall` will invoke the `receive` function if the second argument is the empty byte string.
* If the getter returns `"5.0.0"`, only `upgradeToAndCall(address,bytes)` is present, and the second argument must
* be the empty byte string if no function should be called, making it impossible to invoke the `receive` function
* during an upgrade.
*/
string public constant UPGRADE_INTERFACE_VERSION = "5.0.0";
/**
* @dev The call is from an unauthorized context.
*/
error UUPSUnauthorizedCallContext();
/**
* @dev The storage `slot` is unsupported as a UUID.
*/
error UUPSUnsupportedProxiableUUID(bytes32 slot);
/**
* @dev Check that the execution is being performed through a delegatecall call and that the execution context is
* a proxy contract with an implementation (as defined in ERC-1967) pointing to self. This should only be the case
* for UUPS and transparent proxies that are using the current contract as their implementation. Execution of a
* function through ERC-1167 minimal proxies (clones) would not normally pass this test, but is not guaranteed to
* fail.
*/
modifier onlyProxy() {
_checkProxy();
_;
}
/**
* @dev Check that the execution is not being performed through a delegate call. This allows a function to be
* callable on the implementing contract but not through proxies.
*/
modifier notDelegated() {
_checkNotDelegated();
_;
}
function __UUPSUpgradeable_init() internal onlyInitializing {
}
function __UUPSUpgradeable_init_unchained() internal onlyInitializing {
}
/**
* @dev Implementation of the ERC-1822 {proxiableUUID} function. This returns the storage slot used by the
* implementation. It is used to validate the implementation's compatibility when performing an upgrade.
*
* IMPORTANT: A proxy pointing at a proxiable contract should not be considered proxiable itself, because this risks
* bricking a proxy that upgrades to it, by delegating to itself until out of gas. Thus it is critical that this
* function revert if invoked through a proxy. This is guaranteed by the `notDelegated` modifier.
*/
function proxiableUUID() external view virtual notDelegated returns (bytes32) {
return ERC1967Utils.IMPLEMENTATION_SLOT;
}
/**
* @dev Upgrade the implementation of the proxy to `newImplementation`, and subsequently execute the function call
* encoded in `data`.
*
* Calls {_authorizeUpgrade}.
*
* Emits an {Upgraded} event.
*
* @custom:oz-upgrades-unsafe-allow-reachable delegatecall
*/
function upgradeToAndCall(address newImplementation, bytes memory data) public payable virtual onlyProxy {
_authorizeUpgrade(newImplementation);
_upgradeToAndCallUUPS(newImplementation, data);
}
/**
* @dev Reverts if the execution is not performed via delegatecall or the execution
* context is not of a proxy with an ERC-1967 compliant implementation pointing to self.
*/
function _checkProxy() internal view virtual {
if (
address(this) == __self || // Must be called through delegatecall
ERC1967Utils.getImplementation() != __self // Must be called through an active proxy
) {
revert UUPSUnauthorizedCallContext();
}
}
/**
* @dev Reverts if the execution is performed via delegatecall.
* See {notDelegated}.
*/
function _checkNotDelegated() internal view virtual {
if (address(this) != __self) {
// Must not be called through delegatecall
revert UUPSUnauthorizedCallContext();
}
}
/**
* @dev Function that should revert when `msg.sender` is not authorized to upgrade the contract. Called by
* {upgradeToAndCall}.
*
* Normally, this function will use an xref:access.adoc[access control] modifier such as {Ownable-onlyOwner}.
*
* ```solidity
* function _authorizeUpgrade(address) internal onlyOwner {}
* ```
*/
function _authorizeUpgrade(address newImplementation) internal virtual;
/**
* @dev Performs an implementation upgrade with a security check for UUPS proxies, and additional setup call.
*
* As a security check, {proxiableUUID} is invoked in the new implementation, and the return value
* is expected to be the implementation slot in ERC-1967.
*
* Emits an {IERC1967-Upgraded} event.
*/
function _upgradeToAndCallUUPS(address newImplementation, bytes memory data) private {
try IERC1822Proxiable(newImplementation).proxiableUUID() returns (bytes32 slot) {
if (slot != ERC1967Utils.IMPLEMENTATION_SLOT) {
revert UUPSUnsupportedProxiableUUID(slot);
}
ERC1967Utils.upgradeToAndCall(newImplementation, data);
} catch {
// The implementation is not UUPS
revert ERC1967Utils.ERC1967InvalidImplementation(newImplementation);
}
}
}
"
},
"@openzeppelin/contracts-upgradeable/token/ERC20/utils/SafeERC20Upgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.3) (token/ERC20/utils/SafeERC20.sol)
pragma solidity ^0.8.0;
import "../IERC20Upgradeable.sol";
import "../extensions/IERC20PermitUpgradeable.sol";
import "../../../utils/AddressUpgradeable.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 SafeERC20Upgradeable {
using AddressUpgradeable for address;
/**
* @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value,
* non-reverting calls are assumed to be successful.
*/
function safeTransfer(IERC20Upgradeable token, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
/**
* @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the
* calling contract. If `token` returns no value, non-reverting calls are assumed to be successful.
*/
function safeTransferFrom(IERC20Upgradeable 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(IERC20Upgradeable 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));
}
/**
* @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
* non-reverting calls are assumed to be successful.
*/
function safeIncreaseAllowance(IERC20Upgradeable token, address spender, uint256 value) internal {
uint256 oldAllowance = token.allowance(address(this), spender);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance + value));
}
/**
* @dev Decrease the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
* non-reverting calls are assumed to be successful.
*/
function safeDecreaseAllowance(IERC20Upgradeable token, address spender, uint256 value) internal {
unchecked {
uint256 oldAllowance = token.allowance(address(this), spender);
require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance - value));
}
}
/**
* @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,
* non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval
* to be set to zero before setting it to a non-zero value, such as USDT.
*/
function forceApprove(IERC20Upgradeable token, address spender, uint256 value) internal {
bytes memory approvalCall = abi.encodeWithSelector(token.approve.selector, spender, value);
if (!_callOptionalReturnBool(token, approvalCall)) {
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, 0));
_callOptionalReturn(token, approvalCall);
}
}
/**
* @dev Use a ERC-2612 signature to set the `owner` approval toward `spender` on `token`.
* Revert on invalid signature.
*/
function safePermit(
IERC20PermitUpgradeable token,
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) internal {
uint256 nonceBefore = token.nonces(owner);
token.permit(owner, spender, value, deadline, v, r, s);
uint256 nonceAfter = token.nonces(owner);
require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed");
}
/**
* @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(IERC20Upgradeable 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");
require(returndata.length == 0 || abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
/**
* @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).
*
* This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead.
*/
function _callOptionalReturnBool(IERC20Upgradeable token, bytes memory data) private returns (bool) {
// 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 cannot use {Address-functionCall} here since this should return false
// and not revert is the subcall reverts.
(bool success, bytes memory returndata) = address(token).call(data);
return
success && (returndata.length == 0 || abi.decode(returndata, (bool))) && AddressUpgradeable.isContract(address(token));
}
}
"
},
"@openzeppelin/contracts-upgradeable/security/ReentrancyGuardUpgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (security/ReentrancyGuard.sol)
pragma solidity ^0.8.0;
import {Initializable} from "../proxy/utils/Initializable.sol";
/**
* @dev Contract module that helps prevent reentrant calls to a function.
*
* Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
* available, which can be applied to functions to make sure there are no nested
* (reentrant) calls to them.
*
* Note that because there is a single `nonReentrant` guard, functions marked as
* `nonReentrant` may not call one another. This can be worked around by making
* those functions `private`, and then adding `external` `nonReentrant` entry
* points to them.
*
* TIP: If you would like to learn more about reentrancy and alternative ways
* to protect against it, check out our blog post
* https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
*/
abstract contract ReentrancyGuardUpgradeable is Initializable {
// Booleans are more expensive than uint256 or any type that takes up a full
// word because each write operation emits an extra SLOAD to first read the
// slot's contents, replace the bits taken up by the boolean, and then write
// back. This is the compiler's defense against contract upgrades and
// pointer aliasing, and it cannot be disabled.
// The values being non-zero value makes deployment a bit more expensive,
// but in exchange the refund on every call to nonReentrant will be lower in
// amount. Since refunds are capped to a percentage of the total
// transaction's gas, it is best to keep them low in cases like this one, to
// increase the likelihood of the full refund coming into effect.
uint256 private constant _NOT_ENTERED = 1;
uint256 private constant _ENTERED = 2;
uint256 private _status;
function __ReentrancyGuard_init() internal onlyInitializing {
__ReentrancyGuard_init_unchained();
}
function __ReentrancyGuard_init_unchained() internal onlyInitializing {
_status = _NOT_ENTERED;
}
/**
* @dev Prevents a contract from calling itself, directly or indirectly.
* Calling a `nonReentrant` function from another `nonReentrant`
* function is not supported. It is possible to prevent this from happening
* by making the `nonReentrant` function external, and making it call a
* `private` function that does the actual work.
*/
modifier nonReentrant() {
_nonReentrantBefore();
_;
_nonReentrantAfter();
}
function _nonReentrantBefore() private {
// On the first call to nonReentrant, _status will be _NOT_ENTERED
require(_status != _ENTERED, "ReentrancyGuard: reentrant call");
// Any calls to nonReentrant after this point will fail
_status = _ENTERED;
}
function _nonReentrantAfter() private {
// By storing the original value once again, a refund is triggered (see
// https://eips.ethereum.org/EIPS/eip-2200)
_status = _NOT_ENTERED;
}
/**
* @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a
* `nonReentrant` function in the call stack.
*/
function _reentrancyGuardEntered() internal view returns (bool) {
return _status == _ENTERED;
}
/**
* @dev This empty reserved space is put in place to allow future versions to add new
* variables without shifting down storage in the inheritance chain.
* See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
*/
uint256[49] private __gap;
}
"
},
"@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol)
pragma solidity ^0.8.20;
import {ContextUpgradeable} from "../utils/ContextUpgradeable.sol";
import {Initializable} from "../proxy/utils/Initializable.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.
*
* The initial owner is set to the address provided by the deployer. 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 OwnableUpgradeable is Initializable, ContextUpgradeable {
/// @custom:storage-location erc7201:openzeppelin.storage.Ownable
struct OwnableStorage {
address _owner;
}
// keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.Ownable")) - 1)) & ~bytes32(uint256(0xff))
bytes32 private constant OwnableStorageLocation = 0x9016d09d72d40fdae2fd8ceac6b6234c7706214fd39c1cd1e609a0528c199300;
function _getOwnableStorage() private pure returns (OwnableStorage storage $) {
assembly {
$.slot := OwnableStorageLocation
}
}
/**
* @dev The caller account is not authorized to perform an operation.
*/
error OwnableUnauthorizedAccount(address account);
/**
* @dev The owner is not a valid owner account. (eg. `address(0)`)
*/
error OwnableInvalidOwner(address owner);
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the address provided by the deployer as the initial owner.
*/
function __Ownable_init(address initialOwner) internal onlyInitializing {
__Ownable_init_unchained(initialOwner);
}
function __Ownable_init_unchained(address initialOwner) internal onlyInitializing {
if (initialOwner == address(0)) {
revert OwnableInvalidOwner(address(0));
}
_transferOwnership(initialOwner);
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
_checkOwner();
_;
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
OwnableStorage storage $ = _getOwnableStorage();
return $._owner;
}
/**
* @dev Throws if the sender is not the owner.
*/
function _checkOwner() internal view virtual {
if (owner() != _msgSender()) {
revert OwnableUnauthorizedAccount(_msgSender());
}
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby disabling any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
_transferOwnership(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 {
if (newOwner == address(0)) {
revert OwnableInvalidOwner(address(0));
}
_transferOwnership(newOwner);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Internal function without access restriction.
*/
function _transferOwnership(address newOwner) internal virtual {
OwnableStorage storage $ = _getOwnableStorage();
address oldOwner = $._owner;
$._owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
"
},
"@openzeppelin/contracts-upgradeable/security/PausableUpgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (security/Pausable.sol)
pragma solidity ^0.8.0;
import "../utils/ContextUpgradeable.sol";
import {Initializable} from "../proxy/utils/Initializable.sol";
/**
* @dev Contract module which allows children to implement an emergency stop
* mechanism that can be triggered by an authorized account.
*
* This module is used through inheritance. It will make available the
* modifiers `whenNotPaused` and `whenPaused`, which can be applied to
* the functions of your contract. Note that they will not be pausable by
* simply including this module, only once the modifiers are put in place.
*/
abstract contract PausableUpgradeable is Initializable, ContextUpgradeable {
/**
* @dev Emitted when the pause is triggered by `account`.
*/
event Paused(address account);
/**
* @dev Emitted when the pause is lifted by `account`.
*/
event Unpaused(address account);
bool private _paused;
/**
* @dev Initializes the contract in unpaused state.
*/
function __Pausable_init() internal onlyInitializing {
__Pausable_init_unchained();
}
function __Pausable_init_unchained() internal onlyInitializing {
_paused = false;
}
/**
* @dev Modifier to make a function callable only when the contract is not paused.
*
* Requirements:
*
* - The contract must not be paused.
*/
modifier whenNotPaused() {
_requireNotPaused();
_;
}
/**
* @dev Modifier to make a function callable only when the contract is paused.
*
* Requirements:
*
* - The contract must be paused.
*/
modifier whenPaused() {
_requirePaused();
_;
}
/**
* @dev Returns true if the contract is paused, and false otherwise.
*/
function paused() public view virtual returns (bool) {
return _paused;
}
/**
* @dev Throws if the contract is paused.
*/
function _requireNotPaused() internal view virtual {
require(!paused(), "Pausable: paused");
}
/**
* @dev Throws if the contract is not paused.
*/
function _requirePaused() internal view virtual {
require(paused(), "Pausable: not paused");
}
/**
* @dev Triggers stopped state.
*
* Requirements:
*
* - The contract must not be paused.
*/
function _pause() internal virtual whenNotPaused {
_paused = true;
emit Paused(_msgSender());
}
/**
* @dev Returns to normal state.
*
* Requirements:
*
* - The contract must be paused.
*/
function _unpause() internal virtual whenPaused {
_paused = false;
emit Unpaused(_msgSender());
}
/**
* @dev This empty reserved space is put in place to allow future versions to add new
* variables without shifting down storage in the inheritance chain.
* See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
*/
uint256[49] private __gap;
}
"
},
"@openzeppelin/contracts-upgradeable/token/ERC20/extensions/IERC20MetadataUpgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)
pragma solidity ^0.8.0;
import "../IERC20Upgradeable.sol";
/**
* @dev Interface for the optional metadata functions from the ERC20 standard.
*
* _Available since v4.1._
*/
interface IERC20MetadataUpgradeable is IERC20Upgradeable {
/**
* @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);
}
"
},
"@openzeppelin/contracts-upgradeable/token/ERC20/IERC20Upgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20Upgradeable {
/**
* @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);
/**
* @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);
}
"
},
"@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol": {
"content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (proxy/utils/Initializable.sol)
pragma solidity ^0.8.20;
/**
* @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
* behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an
* external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
* function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
*
* The initialization functions use a version number. Once a version number is used, it is consumed and cannot be
* reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in
* case an upgrade adds a module that needs to be initialized.
*
* For example:
*
* [.hljs-theme-light.nopadding]
* ```solidity
* contract MyToken is ERC20Upgradeable {
* function initialize() initializer public {
* __ERC20_init("MyToken", "MTK");
* }
* }
*
* contract MyTokenV2 is MyToken, ERC20PermitUpgradeable {
* function initializeV2() reinitializer(2) public {
* __ERC20Permit_init("MyToken");
* }
* }
* ```
*
* TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
* possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.
*
* CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
* that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
*
* [CAUTION]
* ====
* Avoid leaving a contract uninitialized.
*
* An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation
* contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke
* the {_disableInitializers} function in the constructor to automatically lock it when it is deployed:
*
* [.hljs-theme-light.nopadding]
* ```
* /// @custom:oz-upgrades-unsafe-allow constructor
* constructor() {
* _disableInitializers();
* }
* ```
* ====
*/
abstract contract Initializable {
/**
* @dev Storage of the initializable contract.
*
* It's implemented on a custom ERC-7201 namespace to reduce the risk of storage collisions
* when using with upgradeable contracts.
*
* @custom:storage-location erc7201:openzeppelin.storage.Initializable
*/
struct InitializableStorage {
/**
* @dev Indicates that the contract has been initialized.
*/
uint64 _initialized;
/**
* @dev Indicates that the contract is in the process of being initialized.
*/
bool _initializing;
}
// keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.Initializable")) - 1)) & ~bytes32(uint256(0xff))
bytes32 private constant INITIALIZABLE_STORAGE = 0xf0c57e16840df040f15088dc2f81fe391c3923bec73e23a9662efc9c229c6a00;
/**
* @dev The contract is already initialized.
*/
error InvalidInitialization();
/**
* @dev The contract is not initializing.
*/
error NotInitializing();
/**
* @dev Triggered when the contract has been initialized or reinitialized.
*/
event Initialized(uint64 version);
/**
* @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope,
* `onlyInitializing` functions can be used to initialize parent contracts.
*
* Similar to `reinitializer(1)`, except that in the context of a constructor an `initializer` may be invoked any
* number of times. This behavior in the constructor can be useful during testing and is not expected to be used in
* production.
*
* Emits an {Initialized} event.
*/
modifier initializer() {
// solhint-disable-next-line var-name-mixedcase
InitializableStorage storage $ = _getInitializableStorage();
// Cache values to avoid duplicated sloads
bool isTopLevelCall = !$._initializing;
uint64 initialized = $._initialized;
// Allowed calls:
// - initialSetup: the contract is not in the initializing state and no previous version was
// initialized
// - construction: the contract is initialized at version 1 (no reininitialization) and the
// current contract is just being deployed
bool initialSetup = initialized == 0 && isTopLevelCall;
bool construction = initialized == 1 && address(this).code.length == 0;
if (!initialSetup && !construction) {
revert InvalidInitialization();
}
$._initialized = 1;
if (isTopLevelCall) {
$._initializing = true;
}
_;
if (isTopLevelCall) {
$._initializing = false;
emit Initialized(1);
}
}
/**
* @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the
* contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be
* used to initialize parent contracts.
*
* A reinitializer may be used after the original initialization step. This is essential to configure modules that
* are added through upgrades and that require initialization.
*
* When `version` is 1, this modifier is similar to `initializer`, except that functions marked with `reinitializer`
* cannot be nested. If one is invoked in the context of another, execution will revert.
*
* Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in
* a contract, executing them in the right order is up to the developer or operator.
*
* WARNING: Setting the version to 2**64 - 1 will prevent any future reinitialization.
*
* Emits an {Initialized} event.
*/
modifier reinitializer(uint64 version) {
// solhint-disable-next-line var-name-mixedcase
InitializableStorage storage $ = _getInitializableStorage();
if ($._initializing || $._initialized >= version) {
revert InvalidInitialization();
}
$._initialized = version;
$._initializing = true;
_;
$._initializing = false;
emit Initialized(version);
}
/**
* @dev Modifier to protect an initialization function so that it can only be invoked by functions with the
* {initializer} and {reinitializer} modifiers, directly or indirectly.
*/
modifier onlyInitializing() {
_checkInitializing();
_;
}
/**
* @dev Reverts if the contract is not in an initializing state. See {onlyInitializing}.
*/
function _checkInitializing() internal view virtual {
if (!_isInitializing()) {
revert NotInitializing();
}
}
/**
* @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call.
* Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized
* to any version. It is recommended to use this to lock implementation contracts that are designed to be called
* through proxies.
*
* Emits an {Initialized} event the first time it is successfully executed.
*/
function _disableInitializers() internal virtual {
// solhint-disable-next-line var-name-mixedcase
InitializableStorage storage $ = _getInitializableStorage();
if ($._initializing) {
revert InvalidInitialization();
}
if ($._initialized != type(uint64).max) {
$._initialized = type(uint64).max;
emit Initialized(type(uint64).max);
}
}
/**
* @dev Returns the highest version that has been initialized. See {reinitializer}.
*/
function _getInitializedVersion() internal view returns (uint64) {
return _getInitializableStorage()._initialized;
}
/**
* @dev Returns `true` if the contract is currently initializing. See {onlyInitializing}.
*/
function _isInitializing() internal view returns (bool) {
return _getInitializableStorage()._initializing;
}
/**
* @dev Returns a pointer to the storage namespace.
*/
// solhint-disable-next-line var-name-mixedcase
function _getInitializableStorage() private pure returns (InitializableStorage storage $) {
assembly {
$.slot := INITIALIZABLE_STORAGE
}
}
}
"
},
"@openzeppelin/contracts-upgradeable/utils/AddressUpgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol)
pragma solidity ^0.8.1;
/**
* @dev Collection of functions related to the address type
*/
library AddressUpgradeable {
/**
* @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
*
* Furthermore, `isContract` will also return true if the target contract within
* the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
* which only has an effect at the end of a transaction.
* ====
*
* [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://consensys.net/diligence/blog/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/v0.8.0/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 functionCallWithValue(target, data, 0, "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");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResultFromTarget(target, 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 memSubmitted on: 2025-10-30 14:32:50
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