// SPDX-License-Identifier: MIT// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)pragmasolidity ^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.
*/abstractcontractContext{
function_msgSender() internalviewvirtualreturns (address) {
returnmsg.sender;
}
function_msgData() internalviewvirtualreturns (bytescalldata) {
returnmsg.data;
}
}
Contract Source Code
File 2 of 10: ERC20.sol
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/ERC20.sol)pragmasolidity ^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.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* The default value of {decimals} is 18. To change this, you should override
* this function so it returns a different value.
*
* We have followed general OpenZeppelin Contracts guidelines: functions revert
* instead returning `false` on failure. This behavior is nonetheless
* conventional and does not conflict with the expectations of ERC20
* applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/contractERC20isContext, IERC20, IERC20Metadata{
mapping(address=>uint256) private _balances;
mapping(address=>mapping(address=>uint256)) private _allowances;
uint256private _totalSupply;
stringprivate _name;
stringprivate _symbol;
/**
* @dev Sets the values for {name} and {symbol}.
*
* All two of these values are immutable: they can only be set once during
* construction.
*/constructor(stringmemory name_, stringmemory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev Returns the name of the token.
*/functionname() publicviewvirtualoverridereturns (stringmemory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/functionsymbol() publicviewvirtualoverridereturns (stringmemory) {
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 default value returned by this function, unless
* it's 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}.
*/functiondecimals() publicviewvirtualoverridereturns (uint8) {
return18;
}
/**
* @dev See {IERC20-totalSupply}.
*/functiontotalSupply() publicviewvirtualoverridereturns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/functionbalanceOf(address account) publicviewvirtualoverridereturns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/functiontransfer(address to, uint256 amount) publicvirtualoverridereturns (bool) {
address owner = _msgSender();
_transfer(owner, to, amount);
returntrue;
}
/**
* @dev See {IERC20-allowance}.
*/functionallowance(address owner, address spender) publicviewvirtualoverridereturns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on
* `transferFrom`. This is semantically equivalent to an infinite approval.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/functionapprove(address spender, uint256 amount) publicvirtualoverridereturns (bool) {
address owner = _msgSender();
_approve(owner, spender, amount);
returntrue;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20}.
*
* NOTE: Does not update the allowance if the current allowance
* is the maximum `uint256`.
*
* Requirements:
*
* - `from` and `to` cannot be the zero address.
* - `from` must have a balance of at least `amount`.
* - the caller must have allowance for ``from``'s tokens of at least
* `amount`.
*/functiontransferFrom(addressfrom, address to, uint256 amount) publicvirtualoverridereturns (bool) {
address spender = _msgSender();
_spendAllowance(from, spender, amount);
_transfer(from, to, amount);
returntrue;
}
/**
* @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.
*/functionincreaseAllowance(address spender, uint256 addedValue) publicvirtualreturns (bool) {
address owner = _msgSender();
_approve(owner, spender, allowance(owner, spender) + addedValue);
returntrue;
}
/**
* @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`.
*/functiondecreaseAllowance(address spender, uint256 subtractedValue) publicvirtualreturns (bool) {
address owner = _msgSender();
uint256 currentAllowance = allowance(owner, spender);
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(owner, spender, currentAllowance - subtractedValue);
}
returntrue;
}
/**
* @dev Moves `amount` of tokens from `from` to `to`.
*
* This internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `from` must have a balance of at least `amount`.
*/function_transfer(addressfrom, address to, uint256 amount) internalvirtual{
require(from!=address(0), "ERC20: transfer from the zero address");
require(to !=address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(from, to, amount);
uint256 fromBalance = _balances[from];
require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[from] = fromBalance - amount;
// Overflow not possible: the sum of all balances is capped by totalSupply, and the sum is preserved by// decrementing then incrementing.
_balances[to] += amount;
}
emit Transfer(from, to, amount);
_afterTokenTransfer(from, to, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/function_mint(address account, uint256 amount) internalvirtual{
require(account !=address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply += amount;
unchecked {
// Overflow not possible: balance + amount is at most totalSupply + amount, which is checked above.
_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) internalvirtual{
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;
// Overflow not possible: amount <= accountBalance <= totalSupply.
_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) internalvirtual{
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 Updates `owner` s allowance for `spender` based on spent `amount`.
*
* Does not update the allowance amount in case of infinite allowance.
* Revert if not enough allowance is available.
*
* Might emit an {Approval} event.
*/function_spendAllowance(address owner, address spender, uint256 amount) internalvirtual{
uint256 currentAllowance = allowance(owner, spender);
if (currentAllowance !=type(uint256).max) {
require(currentAllowance >= amount, "ERC20: insufficient allowance");
unchecked {
_approve(owner, spender, currentAllowance - amount);
}
}
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/function_beforeTokenTransfer(addressfrom, address to, uint256 amount) internalvirtual{}
/**
* @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(addressfrom, address to, uint256 amount) internalvirtual{}
}
Contract Source Code
File 3 of 10: ERC20Burnable.sol
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC20/extensions/ERC20Burnable.sol)pragmasolidity ^0.8.0;import"../ERC20.sol";
import"../../../utils/Context.sol";
/**
* @dev Extension of {ERC20} that allows token holders to destroy both their own
* tokens and those that they have an allowance for, in a way that can be
* recognized off-chain (via event analysis).
*/abstractcontractERC20BurnableisContext, ERC20{
/**
* @dev Destroys `amount` tokens from the caller.
*
* See {ERC20-_burn}.
*/functionburn(uint256 amount) publicvirtual{
_burn(_msgSender(), amount);
}
/**
* @dev Destroys `amount` tokens from `account`, deducting from the caller's
* allowance.
*
* See {ERC20-_burn} and {ERC20-allowance}.
*
* Requirements:
*
* - the caller must have allowance for ``accounts``'s tokens of at least
* `amount`.
*/functionburnFrom(address account, uint256 amount) publicvirtual{
_spendAllowance(account, _msgSender(), amount);
_burn(account, amount);
}
}
Contract Source Code
File 4 of 10: ERC20Pausable.sol
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/extensions/ERC20Pausable.sol)pragmasolidity ^0.8.0;import"../ERC20.sol";
import"../../../security/Pausable.sol";
/**
* @dev ERC20 token with pausable token transfers, minting and burning.
*
* Useful for scenarios such as preventing trades until the end of an evaluation
* period, or having an emergency switch for freezing all token transfers in the
* event of a large bug.
*
* IMPORTANT: This contract does not include public pause and unpause functions. In
* addition to inheriting this contract, you must define both functions, invoking the
* {Pausable-_pause} and {Pausable-_unpause} internal functions, with appropriate
* access control, e.g. using {AccessControl} or {Ownable}. Not doing so will
* make the contract unpausable.
*/abstractcontractERC20PausableisERC20, Pausable{
/**
* @dev See {ERC20-_beforeTokenTransfer}.
*
* Requirements:
*
* - the contract must not be paused.
*/function_beforeTokenTransfer(addressfrom, address to, uint256 amount) internalvirtualoverride{
super._beforeTokenTransfer(from, to, amount);
require(!paused(), "ERC20Pausable: token transfer while paused");
}
}
Contract Source Code
File 5 of 10: FullFeatureToken.sol
// SPDX-License-Identifier: GPL-3.0pragmasolidity 0.8.17;/**
* Security notice: Refer to our product documentation for security advice
* around the configuration of our smart contracts https://docs.bitbond.com/
*/import { ERC20 } from"@openzeppelin/contracts/token/ERC20/ERC20.sol";
import { Ownable } from"@openzeppelin/contracts/access/Ownable.sol";
import { ERC20Burnable } from"@openzeppelin/contracts/token/ERC20/extensions/ERC20Burnable.sol";
import { ERC20Pausable } from"@openzeppelin/contracts/token/ERC20/extensions/ERC20Pausable.sol";
import { LibCommon } from"./lib/LibCommon.sol";
contractFullFeatureTokenisERC20, ERC20Burnable, ERC20Pausable, Ownable{
uint256privateconstant MAX_BPS_AMOUNT =10_000;
uint256privateconstant MAX_ALLOWED_BPS =5_000;
/// @notice mapping of blacklisted addresses to a booleanmapping(address=>bool) private _isBlacklisted;
/// @notice mapping of whitelisted addresses to a booleanmapping(address=>bool) public whitelist;
/// @notice array holding all whitelisted addressesaddress[] public whitelistedAddresses;
/// @notice support for attaching of documentation for security tokensstringpublic initialDocumentUri;
/// @notice the security token documentationstringpublic documentUri;
/// @notice initial number of tokens which will be minted during initializationuint256publicimmutable initialSupply;
/// @notice initial max amount of tokens allowed per walletuint256publicimmutable initialMaxTokenAmountPerAddress;
/// @notice max amount of tokens allowed per walletuint256public maxTokenAmountPerAddress;
/// @notice set of features supported by the tokenstructERC20ConfigProps {
bool _isMintable;
bool _isBurnable;
bool _isPausable;
bool _isBlacklistEnabled;
bool _isDocumentAllowed;
bool _isWhitelistEnabled;
bool _isMaxAmountOfTokensSet;
bool _isForceTransferAllowed;
bool _isTaxable;
bool _isDeflationary;
}
/// @notice features of the token
ERC20ConfigProps private configProps;
/// @notice owner of the contractaddresspublicimmutable initialTokenOwner;
/// @notice number of decimals of the tokenuint8privateimmutable _decimals;
addresspublic taxAddress;
uint256public taxBPS;
uint256public deflationBPS;
/// @notice emitted when an address is blacklistedeventUserBlacklisted(addressindexed addr);
/// @notice emitted when an address is unblacklistedeventUserUnBlacklisted(addressindexed addr);
/// @notice emitted when a new document is set for the security tokeneventDocumentUriSet(string newDocUri);
/// @notice emitted when a new max amount of tokens per wallet is seteventMaxTokenAmountPerSet(uint256 newMaxTokenAmount);
/// @notice emitted when a new whitelist is seteventUsersWhitelisted(address[] updatedAddresses);
/// @notice emitted when a new tax address or taxBPS is seteventTaxConfigSet(addressindexed _taxAddress, uint256indexed _taxBPS);
/// @notice emitted when a new deflationBPS is seteventDeflationConfigSet(uint256indexed _deflationBPS);
/// @notice raised when the amount sent is zeroerrorInvalidMaxTokenAmount(uint256 maxTokenAmount);
/// @notice raised when the decimals are not in the range 0 - 18errorInvalidDecimals(uint8 decimals);
/// @notice raised when setting maxTokenAmount less than currenterrorMaxTokenAmountPerAddrLtPrevious();
/// @notice raised when blacklisting is not enablederrorBlacklistNotEnabled();
/// @notice raised when the address is already blacklistederrorAddrAlreadyBlacklisted(address addr);
/// @notice raised when the address is already unblacklistederrorAddrAlreadyUnblacklisted(address addr);
/// @notice raised when attempting to blacklist a whitelisted addresserrorCannotBlacklistWhitelistedAddr(address addr);
/// @notice raised when a recipient address is blacklistederrorRecipientBlacklisted(address addr);
/// @notice raised when a sender address is blacklistederrorSenderBlacklisted(address addr);
/// @notice raised when a recipient address is not whitelistederrorRecipientNotWhitelisted(address addr);
/// @notice raised when a sender address is not whitelistederrorSenderNotWhitelisted(address addr);
/// @notice raised when recipient balance exceeds maxTokenAmountPerAddresserrorDestBalanceExceedsMaxAllowed(address addr);
/// @notice raised minting is not enablederrorMintingNotEnabled();
/// @notice raised when burning is not enablederrorBurningNotEnabled();
/// @notice raised when pause is not enablederrorPausingNotEnabled();
/// @notice raised when whitelist is not enablederrorWhitelistNotEnabled();
/// @notice raised when attempting to whitelist a blacklisted addresserrorCannotWhitelistBlacklistedAddr(address addr);
/// @notice raised when trying to set a document URI when not allowederrorDocumentUriNotAllowed();
/// @notice raised when trying to set a max amount of tokens when not allowederrorMaxTokenAmountNotAllowed();
/// @notice raised when trying to set a tax address or taxBPS when not allowederrorTokenIsNotTaxable();
/// @notice raised when trying to set a deflationBPS when not allowederrorTokenIsNotDeflationary();
/// @notice raised when trying to set an invalid taxBPSerrorInvalidTaxBPS(uint256 bps);
/// @notice raised when trying to set and invalid deflationBPSerrorInvalidDeflationBPS(uint256 bps);
/**
* @notice modifier for validating if transfer is possible and valid
* @param sender the sender of the transaction
* @param recipient the recipient of the transaction
*/modifiervalidateTransfer(address sender, address recipient) {
if (isWhitelistEnabled()) {
if (!whitelist[sender]) {
revert SenderNotWhitelisted(sender);
}
if (!whitelist[recipient]) {
revert RecipientNotWhitelisted(recipient);
}
if (
sender !=msg.sender&&msg.sender!= owner() &&!whitelist[msg.sender]
) {
revert SenderNotWhitelisted(msg.sender);
}
}
if (isBlacklistEnabled()) {
if (_isBlacklisted[sender]) {
revert SenderBlacklisted(sender);
}
if (_isBlacklisted[recipient]) {
revert RecipientBlacklisted(recipient);
}
if (
sender !=msg.sender&&msg.sender!= owner() &&
_isBlacklisted[msg.sender]
) {
revert SenderBlacklisted(msg.sender);
}
}
_;
}
constructor(stringmemory name_,
stringmemory symbol_,
uint256 initialSupplyToSet,
uint8 decimalsToSet,
address tokenOwner,
ERC20ConfigProps memory customConfigProps,
uint256 maxTokenAmount,
stringmemory newDocumentUri,
address _taxAddress,
uint256 _taxBPS,
uint256 _deflationBPS
) ERC20(name_, symbol_) {
if (customConfigProps._isMaxAmountOfTokensSet) {
if (maxTokenAmount ==0) {
revert InvalidMaxTokenAmount(maxTokenAmount);
}
}
if (decimalsToSet >18) {
revert InvalidDecimals(decimalsToSet);
}
if (customConfigProps._isTaxable) {
if (_taxBPS > MAX_ALLOWED_BPS) {
revert InvalidTaxBPS(_taxBPS);
}
LibCommon.validateAddress(_taxAddress);
taxAddress = _taxAddress;
taxBPS = _taxBPS;
}
if (customConfigProps._isDeflationary) {
if (_deflationBPS > MAX_ALLOWED_BPS) {
revert InvalidDeflationBPS(_deflationBPS);
}
deflationBPS = _deflationBPS;
}
LibCommon.validateAddress(tokenOwner);
initialSupply = initialSupplyToSet;
initialMaxTokenAmountPerAddress = maxTokenAmount;
initialDocumentUri = newDocumentUri;
initialTokenOwner = tokenOwner;
_decimals = decimalsToSet;
configProps = customConfigProps;
documentUri = newDocumentUri;
maxTokenAmountPerAddress = maxTokenAmount;
if (initialSupplyToSet !=0) {
_mint(tokenOwner, initialSupplyToSet *10** decimalsToSet);
}
if (tokenOwner !=msg.sender) {
transferOwnership(tokenOwner);
}
}
/**
* @notice hook called before any transfer of tokens. This includes minting and burning
* imposed by the ERC20 standard
* @param from - address of the sender
* @param to - address of the recipient
* @param amount - amount of tokens to transfer
*/function_beforeTokenTransfer(addressfrom,
address to,
uint256 amount
) internalvirtualoverride(ERC20, ERC20Pausable) {
super._beforeTokenTransfer(from, to, amount);
}
/// @notice method which checks if the token is pausablefunctionisPausable() publicviewreturns (bool) {
return configProps._isPausable;
}
/// @notice method which checks if the token is mintablefunctionisMintable() publicviewreturns (bool) {
return configProps._isMintable;
}
/// @notice method which checks if the token is burnablefunctionisBurnable() publicviewreturns (bool) {
return configProps._isBurnable;
}
/// @notice method which checks if the token supports blacklistingfunctionisBlacklistEnabled() publicviewreturns (bool) {
return configProps._isBlacklistEnabled;
}
/// @notice method which checks if the token supports whitelistingfunctionisWhitelistEnabled() publicviewreturns (bool) {
return configProps._isWhitelistEnabled;
}
/// @notice method which checks if the token supports max amount of tokens per walletfunctionisMaxAmountOfTokensSet() publicviewreturns (bool) {
return configProps._isMaxAmountOfTokensSet;
}
/// @notice method which checks if the token supports documentUrisfunctionisDocumentUriAllowed() publicviewreturns (bool) {
return configProps._isDocumentAllowed;
}
/// @notice method which checks if the token supports force transfersfunctionisForceTransferAllowed() publicviewreturns (bool) {
return configProps._isForceTransferAllowed;
}
/// @notice method which returns the number of decimals for the tokenfunctiondecimals() publicviewvirtualoverridereturns (uint8) {
return _decimals;
}
/// @notice method which checks if the token is taxablefunctionisTaxable() publicviewreturns (bool) {
return configProps._isTaxable;
}
/// @notice method which checks if the token is deflationaryfunctionisDeflationary() publicviewreturns (bool) {
return configProps._isDeflationary;
}
/**
* @notice which returns an array of all the whitelisted addresses
* @return whitelistedAddresses array of all the whitelisted addresses
*/functiongetWhitelistedAddresses() externalviewreturns (address[] memory) {
return whitelistedAddresses;
}
/**
* @notice method which allows the owner to set a documentUri
* @param newDocumentUri - the new documentUri
* @dev only callable by the owner
*/functionsetDocumentUri(stringmemory newDocumentUri
) externalonlyOwnerwhenNotPaused{
if (!isDocumentUriAllowed()) {
revert DocumentUriNotAllowed();
}
documentUri = newDocumentUri;
emit DocumentUriSet(newDocumentUri);
}
/**
* @notice method which allows the owner to set a max amount of tokens per wallet
* @param newMaxTokenAmount - the new max amount of tokens per wallet
* @dev only callable by the owner
*/functionsetMaxTokenAmountPerAddress(uint256 newMaxTokenAmount
) externalonlyOwnerwhenNotPaused{
if (!isMaxAmountOfTokensSet()) {
revert MaxTokenAmountNotAllowed();
}
if (newMaxTokenAmount <= maxTokenAmountPerAddress) {
revert MaxTokenAmountPerAddrLtPrevious();
}
maxTokenAmountPerAddress = newMaxTokenAmount;
emit MaxTokenAmountPerSet(newMaxTokenAmount);
}
/**
* @notice method which allows the owner to blacklist an address
* @param addr - the address to blacklist
* @dev only callable by the owner
* @dev only callable if the token is not paused
* @dev only callable if the token supports blacklisting
* @dev only callable if the address is not already blacklisted
* @dev only callable if the address is not whitelisted
*/functionblackList(address addr) externalonlyOwnerwhenNotPaused{
LibCommon.validateAddress(addr);
if (!isBlacklistEnabled()) {
revert BlacklistNotEnabled();
}
if (_isBlacklisted[addr]) {
revert AddrAlreadyBlacklisted(addr);
}
if (isWhitelistEnabled() && whitelist[addr]) {
revert CannotBlacklistWhitelistedAddr(addr);
}
_isBlacklisted[addr] =true;
emit UserBlacklisted(addr);
}
/**
* @notice method which allows the owner to unblacklist an address
* @param addr - the address to unblacklist
* @dev only callable by the owner
* @dev only callable if the token is not paused
* @dev only callable if the token supports blacklisting
* @dev only callable if the address is blacklisted
*/functionremoveFromBlacklist(address addr) externalonlyOwnerwhenNotPaused{
LibCommon.validateAddress(addr);
if (!isBlacklistEnabled()) {
revert BlacklistNotEnabled();
}
if (!_isBlacklisted[addr]) {
revert AddrAlreadyUnblacklisted(addr);
}
delete _isBlacklisted[addr];
emit UserUnBlacklisted(addr);
}
/**
* @notice method which allows the owner to set the tax config
* @param _taxAddress - the new taxAddress
* @param _taxBPS - the new taxBPS
*/functionsetTaxConfig(address _taxAddress,
uint256 _taxBPS
) externalonlyOwnerwhenNotPaused{
if (!isTaxable()) {
revert TokenIsNotTaxable();
}
if (_taxBPS > MAX_ALLOWED_BPS) {
revert InvalidTaxBPS(_taxBPS);
}
LibCommon.validateAddress(_taxAddress);
taxAddress = _taxAddress;
taxBPS = _taxBPS;
emit TaxConfigSet(_taxAddress, _taxBPS);
}
/**
* @notice method which allows the owner to set the deflation config
* @param _deflationBPS - the new deflationBPS
*/functionsetDeflationConfig(uint256 _deflationBPS
) externalonlyOwnerwhenNotPaused{
if (!isDeflationary()) {
revert TokenIsNotDeflationary();
}
if (_deflationBPS > MAX_ALLOWED_BPS) {
revert InvalidDeflationBPS(_deflationBPS);
}
deflationBPS = _deflationBPS;
emit DeflationConfigSet(_deflationBPS);
}
/**
* @notice method which allows to transfer a predefined amount of tokens to a predefined address
* @param to - the address to transfer the tokens to
* @param amount - the amount of tokens to transfer
* @return true if the transfer was successful
* @dev only callable if the token is not paused
* @dev only callable if the balance of the receiver is lower than the max amount of tokens per wallet
* @dev checks if blacklisting is enabled and if the sender and receiver are not blacklisted
* @dev checks if whitelisting is enabled and if the sender and receiver are whitelisted
* @dev captures the tax during the transfer if tax is enabvled
* @dev burns the deflationary amount during the transfer if deflation is enabled
*/functiontransfer(address to,
uint256 amount
)
publicvirtualoverridewhenNotPausedvalidateTransfer(msg.sender, to)
returns (bool)
{
uint256 taxAmount = _taxAmount(msg.sender, amount);
uint256 deflationAmount = _deflationAmount(amount);
uint256 amountToTransfer = amount - taxAmount - deflationAmount;
if (isMaxAmountOfTokensSet()) {
if (balanceOf(to) + amountToTransfer > maxTokenAmountPerAddress) {
revert DestBalanceExceedsMaxAllowed(to);
}
}
if (taxAmount !=0) {
_transfer(msg.sender, taxAddress, taxAmount);
}
if (deflationAmount !=0) {
_burn(msg.sender, deflationAmount);
}
returnsuper.transfer(to, amountToTransfer);
}
/**
* @notice method which allows to transfer a predefined amount of tokens from a predefined address to a predefined address
* @param from - the address to transfer the tokens from
* @param to - the address to transfer the tokens to
* @param amount - the amount of tokens to transfer
* @return true if the transfer was successful
* @dev only callable if the token is not paused
* @dev only callable if the balance of the receiver is lower than the max amount of tokens per wallet
* @dev checks if blacklisting is enabled and if the sender and receiver are not blacklisted
* @dev checks if whitelisting is enabled and if the sender and receiver are whitelisted
* @dev captures the tax during the transfer if tax is enabvled
* @dev burns the deflationary amount during the transfer if deflation is enabled
*/functiontransferFrom(addressfrom,
address to,
uint256 amount
)
publicvirtualoverridewhenNotPausedvalidateTransfer(from, to)
returns (bool)
{
uint256 taxAmount = _taxAmount(from, amount);
uint256 deflationAmount = _deflationAmount(amount);
uint256 amountToTransfer = amount - taxAmount - deflationAmount;
if (isMaxAmountOfTokensSet()) {
if (balanceOf(to) + amountToTransfer > maxTokenAmountPerAddress) {
revert DestBalanceExceedsMaxAllowed(to);
}
}
if (taxAmount !=0) {
_transfer(from, taxAddress, taxAmount);
}
if (deflationAmount !=0) {
_burn(from, deflationAmount);
}
if (isForceTransferAllowed() && owner() ==msg.sender) {
_transfer(from, to, amountToTransfer);
returntrue;
} else {
returnsuper.transferFrom(from, to, amountToTransfer);
}
}
/**
* @notice method which allows to mint a predefined amount of tokens to a predefined address
* @param to - the address to mint the tokens to
* @param amount - the amount of tokens to mint
* @dev only callable by the owner
* @dev only callable if the token is not paused
* @dev only callable if the token supports additional minting
* @dev only callable if the balance of the receiver is lower than the max amount of tokens per wallet
* @dev checks if blacklisting is enabled and if the receiver is not blacklisted
* @dev checks if whitelisting is enabled and if the receiver is whitelisted
*/functionmint(address to, uint256 amount) externalonlyOwnerwhenNotPaused{
if (!isMintable()) {
revert MintingNotEnabled();
}
if (isMaxAmountOfTokensSet()) {
if (balanceOf(to) + amount > maxTokenAmountPerAddress) {
revert DestBalanceExceedsMaxAllowed(to);
}
}
if (isBlacklistEnabled()) {
if (_isBlacklisted[to]) {
revert RecipientBlacklisted(to);
}
}
if (isWhitelistEnabled()) {
if (!whitelist[to]) {
revert RecipientNotWhitelisted(to);
}
}
super._mint(to, amount);
}
/**
* @notice method which allows to burn a predefined amount of tokens
* @param amount - the amount of tokens to burn
* @dev only callable by the owner
* @dev only callable if the token is not paused
* @dev only callable if the token supports burning
*/functionburn(uint256 amount) publicoverrideonlyOwnerwhenNotPaused{
if (!isBurnable()) {
revert BurningNotEnabled();
}
super.burn(amount);
}
/**
* @notice method which allows to burn a predefined amount of tokens from a predefined address
* @param from - the address to burn the tokens from
* @param amount - the amount of tokens to burn
* @dev only callable by the owner
* @dev only callable if the token is not paused
* @dev only callable if the token supports burning
*/functionburnFrom(addressfrom,
uint256 amount
) publicoverrideonlyOwnerwhenNotPaused{
if (!isBurnable()) {
revert BurningNotEnabled();
}
super.burnFrom(from, amount);
}
/**
* @notice method which allows to pause the token
* @dev only callable by the owner
*/functionpause() externalonlyOwner{
if (!isPausable()) {
revert PausingNotEnabled();
}
_pause();
}
/**
* @notice method which allows to unpause the token
* @dev only callable by the owner
*/functionunpause() externalonlyOwner{
if (!isPausable()) {
revert PausingNotEnabled();
}
_unpause();
}
/**
* @notice method which allows to removing the owner of the token
* @dev methods which are only callable by the owner will not be callable anymore
* @dev only callable by the owner
* @dev only callable if the token is not paused
*/functionrenounceOwnership() publicoverrideonlyOwnerwhenNotPaused{
super.renounceOwnership();
}
/**
* @notice method which allows to transfer the ownership of the token
* @param newOwner - the address of the new owner
* @dev only callable by the owner
* @dev only callable if the token is not paused
*/functiontransferOwnership(address newOwner
) publicoverrideonlyOwnerwhenNotPaused{
super.transferOwnership(newOwner);
}
/**
* @notice method which allows to update the whitelist of the token
* @param updatedAddresses - the new set of addresses
* @dev only callable by the owner
* @dev only callable if the token supports whitelisting
*/functionupdateWhitelist(address[] calldata updatedAddresses
) externalonlyOwnerwhenNotPaused{
if (!isWhitelistEnabled()) {
revert WhitelistNotEnabled();
}
_clearWhitelist();
_addManyToWhitelist(updatedAddresses);
whitelistedAddresses = updatedAddresses;
emit UsersWhitelisted(updatedAddresses);
}
/**
* @notice method which allows for adding a new set of addresses to the whitelist
* @param addresses - the addresses to add to the whitelist
* @dev called internally by the contract
* @dev only callable if any of the addresses are not already whitelisted
*/function_addManyToWhitelist(address[] calldata addresses) private{
for (uint256 i; i < addresses.length; ) {
LibCommon.validateAddress(addresses[i]);
if (configProps._isBlacklistEnabled && _isBlacklisted[addresses[i]]) {
revert CannotWhitelistBlacklistedAddr(addresses[i]);
}
whitelist[addresses[i]] =true;
unchecked {
++i;
}
}
}
/**
* @notice method which allows for removing a set of addresses from the whitelist
*/function_clearWhitelist() private{
unchecked {
address[] memory addresses = whitelistedAddresses;
for (uint256 i; i < addresses.length; i++) {
delete whitelist[addresses[i]];
}
}
}
/**
* @notice method which returns the amount of tokens to be taxed during a transfer
* @param sender - the address of the originating account
* @param amount - the total amount of tokens sent in the transfer
* @dev if the tax address is the same as the originating account performing the transfer, no tax is applied
*/function_taxAmount(address sender,
uint256 amount
) internalviewreturns (uint256 taxAmount) {
taxAmount =0;
if (taxBPS !=0&& sender != taxAddress) {
taxAmount = (amount * taxBPS) / MAX_BPS_AMOUNT;
}
}
/**
* @notice method which returns the amount of tokens to be burned during a transfer
* @param amount - the total amount of tokens sent in the transfer
*/function_deflationAmount(uint256 amount
) internalviewreturns (uint256 deflationAmount) {
deflationAmount =0;
if (deflationBPS !=0) {
deflationAmount = (amount * deflationBPS) / MAX_BPS_AMOUNT;
}
}
}
Contract Source Code
File 6 of 10: IERC20.sol
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)pragmasolidity ^0.8.0;/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/interfaceIERC20{
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/eventTransfer(addressindexedfrom, addressindexed 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.
*/eventApproval(addressindexed owner, addressindexed spender, uint256 value);
/**
* @dev Returns the amount of tokens in existence.
*/functiontotalSupply() externalviewreturns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/functionbalanceOf(address account) externalviewreturns (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.
*/functiontransfer(address to, uint256 amount) externalreturns (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.
*/functionallowance(address owner, address spender) externalviewreturns (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.
*/functionapprove(address spender, uint256 amount) externalreturns (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.
*/functiontransferFrom(addressfrom, address to, uint256 amount) externalreturns (bool);
}
Contract Source Code
File 7 of 10: IERC20Metadata.sol
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)pragmasolidity ^0.8.0;import"../IERC20.sol";
/**
* @dev Interface for the optional metadata functions from the ERC20 standard.
*
* _Available since v4.1._
*/interfaceIERC20MetadataisIERC20{
/**
* @dev Returns the name of the token.
*/functionname() externalviewreturns (stringmemory);
/**
* @dev Returns the symbol of the token.
*/functionsymbol() externalviewreturns (stringmemory);
/**
* @dev Returns the decimals places of the token.
*/functiondecimals() externalviewreturns (uint8);
}
Contract Source Code
File 8 of 10: LibCommon.sol
// SPDX-License-Identifier: MITpragmasolidity 0.8.17;libraryLibCommon{
/*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*//* CUSTOM ERRORS *//*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*//// @dev The ETH transfer has failed.errorETHTransferFailed();
/// @dev The address is the zero address.errorZeroAddress();
/// @notice raised when an ERC20 transfer failserrorTransferFailed();
/*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*//* ETH OPERATIONS *//*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*//// @notice Taken from Solady (https://github.com/vectorized/solady/blob/main/src/utils/SafeTransferLib.sol)/// @dev Sends `amount` (in wei) ETH to `to`./// Reverts upon failure.functionsafeTransferETH(address to, uint256 amount) internal{
// solhint-disable-next-line no-inline-assemblyassembly {
// Transfer the ETH and check if it succeeded or not.ifiszero(call(gas(), to, amount, 0, 0, 0, 0)) {
// Store the function selector of `ETHTransferFailed()`.// bytes4(keccak256(bytes("ETHTransferFailed()"))) = 0xb12d13ebmstore(0x00, 0xb12d13eb)
// Revert with (offset, size).revert(0x1c, 0x04)
}
}
}
/// @notice Validates that the address is not the zero address using assembly./// @dev Reverts if the address is the zero address.functionvalidateAddress(address addr) internalpure{
// solhint-disable-next-line no-inline-assemblyassembly {
ifiszero(shl(96, addr)) {
// Store the function selector of `ZeroAddress()`.// bytes4(keccak256(bytes("ZeroAddress()"))) = 0xd92e233dmstore(0x00, 0xd92e233d)
// Revert with (offset, size).revert(0x1c, 0x04)
}
}
}
/// @notice Helper function to transfer ERC20 tokens without the need for SafeERC20./// @dev Reverts if the ERC20 transfer fails./// @param tokenAddress The address of the ERC20 token./// @param from The address to transfer the tokens from./// @param to The address to transfer the tokens to./// @param amount The amount of tokens to transfer.functionsafeTransferFrom(address tokenAddress,
addressfrom,
address to,
uint256 amount
) internalreturns (bool) {
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytesmemory data) = tokenAddress.call(
abi.encodeWithSignature(
"transferFrom(address,address,uint256)",
from,
to,
amount
)
);
if (!success) {
if (data.length!=0) {
// bubble up error// solhint-disable-next-line no-inline-assemblyassembly {
let returndata_size :=mload(data)
revert(add(32, data), returndata_size)
}
} else {
revert TransferFailed();
}
}
returntrue;
}
/// @notice Helper function to transfer ERC20 tokens without the need for SafeERC20./// @dev Reverts if the ERC20 transfer fails./// @param tokenAddress The address of the ERC20 token./// @param to The address to transfer the tokens to./// @param amount The amount of tokens to transfer.functionsafeTransfer(address tokenAddress,
address to,
uint256 amount
) internalreturns (bool) {
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytesmemory data) = tokenAddress.call(
abi.encodeWithSignature("transfer(address,uint256)", to, amount)
);
if (!success) {
if (data.length!=0) {
// bubble up error// solhint-disable-next-line no-inline-assemblyassembly {
let returndata_size :=mload(data)
revert(add(32, data), returndata_size)
}
} else {
revert TransferFailed();
}
}
returntrue;
}
}
Contract Source Code
File 9 of 10: Ownable.sol
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol)pragmasolidity ^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.
*/abstractcontractOwnableisContext{
addressprivate _owner;
eventOwnershipTransferred(addressindexed previousOwner, addressindexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/constructor() {
_transferOwnership(_msgSender());
}
/**
* @dev Throws if called by any account other than the owner.
*/modifieronlyOwner() {
_checkOwner();
_;
}
/**
* @dev Returns the address of the current owner.
*/functionowner() publicviewvirtualreturns (address) {
return _owner;
}
/**
* @dev Throws if the sender is not the owner.
*/function_checkOwner() internalviewvirtual{
require(owner() == _msgSender(), "Ownable: caller is not the owner");
}
/**
* @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.
*/functionrenounceOwnership() publicvirtualonlyOwner{
_transferOwnership(address(0));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/functiontransferOwnership(address newOwner) publicvirtualonlyOwner{
require(newOwner !=address(0), "Ownable: new owner is the zero address");
_transferOwnership(newOwner);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Internal function without access restriction.
*/function_transferOwnership(address newOwner) internalvirtual{
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
Contract Source Code
File 10 of 10: Pausable.sol
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts (last updated v4.7.0) (security/Pausable.sol)pragmasolidity ^0.8.0;import"../utils/Context.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.
*/abstractcontractPausableisContext{
/**
* @dev Emitted when the pause is triggered by `account`.
*/eventPaused(address account);
/**
* @dev Emitted when the pause is lifted by `account`.
*/eventUnpaused(address account);
boolprivate _paused;
/**
* @dev Initializes the contract in unpaused state.
*/constructor() {
_paused =false;
}
/**
* @dev Modifier to make a function callable only when the contract is not paused.
*
* Requirements:
*
* - The contract must not be paused.
*/modifierwhenNotPaused() {
_requireNotPaused();
_;
}
/**
* @dev Modifier to make a function callable only when the contract is paused.
*
* Requirements:
*
* - The contract must be paused.
*/modifierwhenPaused() {
_requirePaused();
_;
}
/**
* @dev Returns true if the contract is paused, and false otherwise.
*/functionpaused() publicviewvirtualreturns (bool) {
return _paused;
}
/**
* @dev Throws if the contract is paused.
*/function_requireNotPaused() internalviewvirtual{
require(!paused(), "Pausable: paused");
}
/**
* @dev Throws if the contract is not paused.
*/function_requirePaused() internalviewvirtual{
require(paused(), "Pausable: not paused");
}
/**
* @dev Triggers stopped state.
*
* Requirements:
*
* - The contract must not be paused.
*/function_pause() internalvirtualwhenNotPaused{
_paused =true;
emit Paused(_msgSender());
}
/**
* @dev Returns to normal state.
*
* Requirements:
*
* - The contract must be paused.
*/function_unpause() internalvirtualwhenPaused{
_paused =false;
emit Unpaused(_msgSender());
}
}