// SPDX-License-Identifier: MIT// OpenZeppelin Contracts (last updated v4.5.0) (access/AccessControl.sol)pragmasolidity ^0.8.0;import"./IAccessControl.sol";
import"../utils/Context.sol";
import"../utils/Strings.sol";
import"../utils/introspection/ERC165.sol";
/**
* @dev Contract module that allows children to implement role-based access
* control mechanisms. This is a lightweight version that doesn't allow enumerating role
* members except through off-chain means by accessing the contract event logs. Some
* applications may benefit from on-chain enumerability, for those cases see
* {AccessControlEnumerable}.
*
* Roles are referred to by their `bytes32` identifier. These should be exposed
* in the external API and be unique. The best way to achieve this is by
* using `public constant` hash digests:
*
* ```
* bytes32 public constant MY_ROLE = keccak256("MY_ROLE");
* ```
*
* Roles can be used to represent a set of permissions. To restrict access to a
* function call, use {hasRole}:
*
* ```
* function foo() public {
* require(hasRole(MY_ROLE, msg.sender));
* ...
* }
* ```
*
* Roles can be granted and revoked dynamically via the {grantRole} and
* {revokeRole} functions. Each role has an associated admin role, and only
* accounts that have a role's admin role can call {grantRole} and {revokeRole}.
*
* By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means
* that only accounts with this role will be able to grant or revoke other
* roles. More complex role relationships can be created by using
* {_setRoleAdmin}.
*
* WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to
* grant and revoke this role. Extra precautions should be taken to secure
* accounts that have been granted it.
*/abstractcontractAccessControlisContext, IAccessControl, ERC165{
structRoleData {
mapping(address=>bool) members;
bytes32 adminRole;
}
mapping(bytes32=> RoleData) private _roles;
bytes32publicconstant DEFAULT_ADMIN_ROLE =0x00;
/**
* @dev Modifier that checks that an account has a specific role. Reverts
* with a standardized message including the required role.
*
* The format of the revert reason is given by the following regular expression:
*
* /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
*
* _Available since v4.1._
*/modifieronlyRole(bytes32 role) {
_checkRole(role, _msgSender());
_;
}
/**
* @dev See {IERC165-supportsInterface}.
*/functionsupportsInterface(bytes4 interfaceId) publicviewvirtualoverridereturns (bool) {
return interfaceId ==type(IAccessControl).interfaceId||super.supportsInterface(interfaceId);
}
/**
* @dev Returns `true` if `account` has been granted `role`.
*/functionhasRole(bytes32 role, address account) publicviewvirtualoverridereturns (bool) {
return _roles[role].members[account];
}
/**
* @dev Revert with a standard message if `account` is missing `role`.
*
* The format of the revert reason is given by the following regular expression:
*
* /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
*/function_checkRole(bytes32 role, address account) internalviewvirtual{
if (!hasRole(role, account)) {
revert(
string(
abi.encodePacked(
"AccessControl: account ",
Strings.toHexString(uint160(account), 20),
" is missing role ",
Strings.toHexString(uint256(role), 32)
)
)
);
}
}
/**
* @dev Returns the admin role that controls `role`. See {grantRole} and
* {revokeRole}.
*
* To change a role's admin, use {_setRoleAdmin}.
*/functiongetRoleAdmin(bytes32 role) publicviewvirtualoverridereturns (bytes32) {
return _roles[role].adminRole;
}
/**
* @dev Grants `role` to `account`.
*
* If `account` had not been already granted `role`, emits a {RoleGranted}
* event.
*
* Requirements:
*
* - the caller must have ``role``'s admin role.
*/functiongrantRole(bytes32 role, address account) publicvirtualoverrideonlyRole(getRoleAdmin(role)) {
_grantRole(role, account);
}
/**
* @dev Revokes `role` from `account`.
*
* If `account` had been granted `role`, emits a {RoleRevoked} event.
*
* Requirements:
*
* - the caller must have ``role``'s admin role.
*/functionrevokeRole(bytes32 role, address account) publicvirtualoverrideonlyRole(getRoleAdmin(role)) {
_revokeRole(role, account);
}
/**
* @dev Revokes `role` from the calling account.
*
* Roles are often managed via {grantRole} and {revokeRole}: this function's
* purpose is to provide a mechanism for accounts to lose their privileges
* if they are compromised (such as when a trusted device is misplaced).
*
* If the calling account had been revoked `role`, emits a {RoleRevoked}
* event.
*
* Requirements:
*
* - the caller must be `account`.
*/functionrenounceRole(bytes32 role, address account) publicvirtualoverride{
require(account == _msgSender(), "AccessControl: can only renounce roles for self");
_revokeRole(role, account);
}
/**
* @dev Grants `role` to `account`.
*
* If `account` had not been already granted `role`, emits a {RoleGranted}
* event. Note that unlike {grantRole}, this function doesn't perform any
* checks on the calling account.
*
* [WARNING]
* ====
* This function should only be called from the constructor when setting
* up the initial roles for the system.
*
* Using this function in any other way is effectively circumventing the admin
* system imposed by {AccessControl}.
* ====
*
* NOTE: This function is deprecated in favor of {_grantRole}.
*/function_setupRole(bytes32 role, address account) internalvirtual{
_grantRole(role, account);
}
/**
* @dev Sets `adminRole` as ``role``'s admin role.
*
* Emits a {RoleAdminChanged} event.
*/function_setRoleAdmin(bytes32 role, bytes32 adminRole) internalvirtual{
bytes32 previousAdminRole = getRoleAdmin(role);
_roles[role].adminRole = adminRole;
emit RoleAdminChanged(role, previousAdminRole, adminRole);
}
/**
* @dev Grants `role` to `account`.
*
* Internal function without access restriction.
*/function_grantRole(bytes32 role, address account) internalvirtual{
if (!hasRole(role, account)) {
_roles[role].members[account] =true;
emit RoleGranted(role, account, _msgSender());
}
}
/**
* @dev Revokes `role` from `account`.
*
* Internal function without access restriction.
*/function_revokeRole(bytes32 role, address account) internalvirtual{
if (hasRole(role, account)) {
_roles[role].members[account] =false;
emit RoleRevoked(role, account, _msgSender());
}
}
}
Contract Source Code
File 2 of 29: AccessControlEnumerable.sol
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts (last updated v4.5.0) (access/AccessControlEnumerable.sol)pragmasolidity ^0.8.0;import"./IAccessControlEnumerable.sol";
import"./AccessControl.sol";
import"../utils/structs/EnumerableSet.sol";
/**
* @dev Extension of {AccessControl} that allows enumerating the members of each role.
*/abstractcontractAccessControlEnumerableisIAccessControlEnumerable, AccessControl{
usingEnumerableSetforEnumerableSet.AddressSet;
mapping(bytes32=> EnumerableSet.AddressSet) private _roleMembers;
/**
* @dev See {IERC165-supportsInterface}.
*/functionsupportsInterface(bytes4 interfaceId) publicviewvirtualoverridereturns (bool) {
return interfaceId ==type(IAccessControlEnumerable).interfaceId||super.supportsInterface(interfaceId);
}
/**
* @dev Returns one of the accounts that have `role`. `index` must be a
* value between 0 and {getRoleMemberCount}, non-inclusive.
*
* Role bearers are not sorted in any particular way, and their ordering may
* change at any point.
*
* WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure
* you perform all queries on the same block. See the following
* https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post]
* for more information.
*/functiongetRoleMember(bytes32 role, uint256 index) publicviewvirtualoverridereturns (address) {
return _roleMembers[role].at(index);
}
/**
* @dev Returns the number of accounts that have `role`. Can be used
* together with {getRoleMember} to enumerate all bearers of a role.
*/functiongetRoleMemberCount(bytes32 role) publicviewvirtualoverridereturns (uint256) {
return _roleMembers[role].length();
}
/**
* @dev Overload {_grantRole} to track enumerable memberships
*/function_grantRole(bytes32 role, address account) internalvirtualoverride{
super._grantRole(role, account);
_roleMembers[role].add(account);
}
/**
* @dev Overload {_revokeRole} to track enumerable memberships
*/function_revokeRole(bytes32 role, address account) internalvirtualoverride{
super._revokeRole(role, account);
_roleMembers[role].remove(account);
}
}
Contract Source Code
File 3 of 29: Address.sol
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol)pragmasolidity ^0.8.1;/**
* @dev Collection of functions related to the address type
*/libraryAddress{
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*
* [IMPORTANT]
* ====
* You shouldn't rely on `isContract` to protect against flash loan attacks!
*
* Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
* like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
* constructor.
* ====
*/functionisContract(address account) internalviewreturns (bool) {
// This method relies on extcodesize/address.code.length, which returns 0// for contracts in construction, since the code is only stored at the end// of the constructor execution.return account.code.length>0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/functionsendValue(addresspayable 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._
*/functionfunctionCall(address target, bytesmemory data) internalreturns (bytesmemory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/functionfunctionCall(address target,
bytesmemory data,
stringmemory errorMessage
) internalreturns (bytesmemory) {
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._
*/functionfunctionCallWithValue(address target,
bytesmemory data,
uint256 value
) internalreturns (bytesmemory) {
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._
*/functionfunctionCallWithValue(address target,
bytesmemory data,
uint256 value,
stringmemory errorMessage
) internalreturns (bytesmemory) {
require(address(this).balance>= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
(bool success, bytesmemory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/functionfunctionStaticCall(address target, bytesmemory data) internalviewreturns (bytesmemory) {
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._
*/functionfunctionStaticCall(address target,
bytesmemory data,
stringmemory errorMessage
) internalviewreturns (bytesmemory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytesmemory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/functionfunctionDelegateCall(address target, bytesmemory data) internalreturns (bytesmemory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/functionfunctionDelegateCall(address target,
bytesmemory data,
stringmemory errorMessage
) internalreturns (bytesmemory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytesmemory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason using the provided one.
*
* _Available since v4.3._
*/functionverifyCallResult(bool success,
bytesmemory returndata,
stringmemory errorMessage
) internalpurereturns (bytesmemory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if presentif (returndata.length>0) {
// The easiest way to bubble the revert reason is using memory via assemblyassembly {
let returndata_size :=mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
Contract Source Code
File 4 of 29: ContentMixin.sol
// SPDX-License-Identifier: MITpragmasolidity 0.8.12;abstractcontractContextMixin{
functionmsgSender()
internalviewreturns (addresspayable sender)
{
if (msg.sender==address(this)) {
bytesmemory array =msg.data;
uint256 index =msg.data.length;
assembly {
// Load the 32 bytes word from memory with the address on the lower 20 bytes, and mask those.
sender :=and(
mload(add(array, index)),
0xffffffffffffffffffffffffffffffffffffffff
)
}
} else {
sender =payable(msg.sender);
}
return sender;
}
}
Contract Source Code
File 5 of 29: Context.sol
// 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 6 of 29: Counters.sol
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts v4.4.1 (utils/Counters.sol)pragmasolidity ^0.8.0;/**
* @title Counters
* @author Matt Condon (@shrugs)
* @dev Provides counters that can only be incremented, decremented or reset. This can be used e.g. to track the number
* of elements in a mapping, issuing ERC721 ids, or counting request ids.
*
* Include with `using Counters for Counters.Counter;`
*/libraryCounters{
structCounter {
// This variable should never be directly accessed by users of the library: interactions must be restricted to// the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add// this feature: see https://github.com/ethereum/solidity/issues/4637uint256 _value; // default: 0
}
functioncurrent(Counter storage counter) internalviewreturns (uint256) {
return counter._value;
}
functionincrement(Counter storage counter) internal{
unchecked {
counter._value +=1;
}
}
functiondecrement(Counter storage counter) internal{
uint256 value = counter._value;
require(value >0, "Counter: decrement overflow");
unchecked {
counter._value = value -1;
}
}
functionreset(Counter storage counter) internal{
counter._value =0;
}
}
Contract Source Code
File 7 of 29: EIP712Base.sol
// SPDX-License-Identifier: MITpragmasolidity 0.8.12;import {Initializable} from"./Initializable.sol";
contractEIP712BaseisInitializable{
structEIP712Domain {
string name;
string version;
address verifyingContract;
bytes32 salt;
}
stringconstantpublic ERC712_VERSION ="1";
bytes32internalconstant EIP712_DOMAIN_TYPEHASH =keccak256(
bytes(
"EIP712Domain(string name,string version,address verifyingContract,bytes32 salt)"
)
);
bytes32internal domainSeperator;
// supposed to be called once while initializing.// one of the contracts that inherits this contract follows proxy pattern// so it is not possible to do this in a constructorfunction_initializeEIP712(stringmemory name
)
internalinitializer{
_setDomainSeperator(name);
}
function_setDomainSeperator(stringmemory name) internal{
domainSeperator =keccak256(
abi.encode(
EIP712_DOMAIN_TYPEHASH,
keccak256(bytes(name)),
keccak256(bytes(ERC712_VERSION)),
address(this),
bytes32(getChainId())
)
);
}
functiongetDomainSeperator() publicviewreturns (bytes32) {
return domainSeperator;
}
functiongetChainId() publicviewreturns (uint256) {
uint256 id;
assembly {
id :=chainid()
}
return id;
}
/**
* Accept message hash and returns hash message in EIP712 compatible form
* So that it can be used to recover signer from signature signed using EIP712 formatted data
* https://eips.ethereum.org/EIPS/eip-712
* "\\x19" makes the encoding deterministic
* "\\x01" is the version byte to make it compatible to EIP-191
*/functiontoTypedMessageHash(bytes32 messageHash)
internalviewreturns (bytes32)
{
returnkeccak256(
abi.encodePacked("\x19\x01", getDomainSeperator(), messageHash)
);
}
}
Contract Source Code
File 8 of 29: ERC1155.sol
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts v4.4.1 (token/ERC1155/ERC1155.sol)pragmasolidity ^0.8.0;import"./IERC1155.sol";
import"./IERC1155Receiver.sol";
import"./extensions/IERC1155MetadataURI.sol";
import"../../utils/Address.sol";
import"../../utils/Context.sol";
import"../../utils/introspection/ERC165.sol";
/**
* @dev Implementation of the basic standard multi-token.
* See https://eips.ethereum.org/EIPS/eip-1155
* Originally based on code by Enjin: https://github.com/enjin/erc-1155
*
* _Available since v3.1._
*/contractERC1155isContext, ERC165, IERC1155, IERC1155MetadataURI{
usingAddressforaddress;
// Mapping from token ID to account balancesmapping(uint256=>mapping(address=>uint256)) private _balances;
// Mapping from account to operator approvalsmapping(address=>mapping(address=>bool)) private _operatorApprovals;
// Used as the URI for all token types by relying on ID substitution, e.g. https://token-cdn-domain/{id}.jsonstringprivate _uri;
/**
* @dev See {_setURI}.
*/constructor(stringmemory uri_) {
_setURI(uri_);
}
/**
* @dev See {IERC165-supportsInterface}.
*/functionsupportsInterface(bytes4 interfaceId) publicviewvirtualoverride(ERC165, IERC165) returns (bool) {
return
interfaceId ==type(IERC1155).interfaceId||
interfaceId ==type(IERC1155MetadataURI).interfaceId||super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC1155MetadataURI-uri}.
*
* This implementation returns the same URI for *all* token types. It relies
* on the token type ID substitution mechanism
* https://eips.ethereum.org/EIPS/eip-1155#metadata[defined in the EIP].
*
* Clients calling this function must replace the `\{id\}` substring with the
* actual token type ID.
*/functionuri(uint256) publicviewvirtualoverridereturns (stringmemory) {
return _uri;
}
/**
* @dev See {IERC1155-balanceOf}.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/functionbalanceOf(address account, uint256 id) publicviewvirtualoverridereturns (uint256) {
require(account !=address(0), "ERC1155: balance query for the zero address");
return _balances[id][account];
}
/**
* @dev See {IERC1155-balanceOfBatch}.
*
* Requirements:
*
* - `accounts` and `ids` must have the same length.
*/functionbalanceOfBatch(address[] memory accounts, uint256[] memory ids)
publicviewvirtualoverridereturns (uint256[] memory)
{
require(accounts.length== ids.length, "ERC1155: accounts and ids length mismatch");
uint256[] memory batchBalances =newuint256[](accounts.length);
for (uint256 i =0; i < accounts.length; ++i) {
batchBalances[i] = balanceOf(accounts[i], ids[i]);
}
return batchBalances;
}
/**
* @dev See {IERC1155-setApprovalForAll}.
*/functionsetApprovalForAll(address operator, bool approved) publicvirtualoverride{
_setApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC1155-isApprovedForAll}.
*/functionisApprovedForAll(address account, address operator) publicviewvirtualoverridereturns (bool) {
return _operatorApprovals[account][operator];
}
/**
* @dev See {IERC1155-safeTransferFrom}.
*/functionsafeTransferFrom(addressfrom,
address to,
uint256 id,
uint256 amount,
bytesmemory data
) publicvirtualoverride{
require(
from== _msgSender() || isApprovedForAll(from, _msgSender()),
"ERC1155: caller is not owner nor approved"
);
_safeTransferFrom(from, to, id, amount, data);
}
/**
* @dev See {IERC1155-safeBatchTransferFrom}.
*/functionsafeBatchTransferFrom(addressfrom,
address to,
uint256[] memory ids,
uint256[] memory amounts,
bytesmemory data
) publicvirtualoverride{
require(
from== _msgSender() || isApprovedForAll(from, _msgSender()),
"ERC1155: transfer caller is not owner nor approved"
);
_safeBatchTransferFrom(from, to, ids, amounts, data);
}
/**
* @dev Transfers `amount` tokens of token type `id` from `from` to `to`.
*
* Emits a {TransferSingle} event.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - `from` must have a balance of tokens of type `id` of at least `amount`.
* - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the
* acceptance magic value.
*/function_safeTransferFrom(addressfrom,
address to,
uint256 id,
uint256 amount,
bytesmemory data
) internalvirtual{
require(to !=address(0), "ERC1155: transfer to the zero address");
address operator = _msgSender();
_beforeTokenTransfer(operator, from, to, _asSingletonArray(id), _asSingletonArray(amount), data);
uint256 fromBalance = _balances[id][from];
require(fromBalance >= amount, "ERC1155: insufficient balance for transfer");
unchecked {
_balances[id][from] = fromBalance - amount;
}
_balances[id][to] += amount;
emit TransferSingle(operator, from, to, id, amount);
_doSafeTransferAcceptanceCheck(operator, from, to, id, amount, data);
}
/**
* @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_safeTransferFrom}.
*
* Emits a {TransferBatch} event.
*
* Requirements:
*
* - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the
* acceptance magic value.
*/function_safeBatchTransferFrom(addressfrom,
address to,
uint256[] memory ids,
uint256[] memory amounts,
bytesmemory data
) internalvirtual{
require(ids.length== amounts.length, "ERC1155: ids and amounts length mismatch");
require(to !=address(0), "ERC1155: transfer to the zero address");
address operator = _msgSender();
_beforeTokenTransfer(operator, from, to, ids, amounts, data);
for (uint256 i =0; i < ids.length; ++i) {
uint256 id = ids[i];
uint256 amount = amounts[i];
uint256 fromBalance = _balances[id][from];
require(fromBalance >= amount, "ERC1155: insufficient balance for transfer");
unchecked {
_balances[id][from] = fromBalance - amount;
}
_balances[id][to] += amount;
}
emit TransferBatch(operator, from, to, ids, amounts);
_doSafeBatchTransferAcceptanceCheck(operator, from, to, ids, amounts, data);
}
/**
* @dev Sets a new URI for all token types, by relying on the token type ID
* substitution mechanism
* https://eips.ethereum.org/EIPS/eip-1155#metadata[defined in the EIP].
*
* By this mechanism, any occurrence of the `\{id\}` substring in either the
* URI or any of the amounts in the JSON file at said URI will be replaced by
* clients with the token type ID.
*
* For example, the `https://token-cdn-domain/\{id\}.json` URI would be
* interpreted by clients as
* `https://token-cdn-domain/000000000000000000000000000000000000000000000000000000000004cce0.json`
* for token type ID 0x4cce0.
*
* See {uri}.
*
* Because these URIs cannot be meaningfully represented by the {URI} event,
* this function emits no events.
*/function_setURI(stringmemory newuri) internalvirtual{
_uri = newuri;
}
/**
* @dev Creates `amount` tokens of token type `id`, and assigns them to `to`.
*
* Emits a {TransferSingle} event.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the
* acceptance magic value.
*/function_mint(address to,
uint256 id,
uint256 amount,
bytesmemory data
) internalvirtual{
require(to !=address(0), "ERC1155: mint to the zero address");
address operator = _msgSender();
_beforeTokenTransfer(operator, address(0), to, _asSingletonArray(id), _asSingletonArray(amount), data);
_balances[id][to] += amount;
emit TransferSingle(operator, address(0), to, id, amount);
_doSafeTransferAcceptanceCheck(operator, address(0), to, id, amount, data);
}
/**
* @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_mint}.
*
* Requirements:
*
* - `ids` and `amounts` must have the same length.
* - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the
* acceptance magic value.
*/function_mintBatch(address to,
uint256[] memory ids,
uint256[] memory amounts,
bytesmemory data
) internalvirtual{
require(to !=address(0), "ERC1155: mint to the zero address");
require(ids.length== amounts.length, "ERC1155: ids and amounts length mismatch");
address operator = _msgSender();
_beforeTokenTransfer(operator, address(0), to, ids, amounts, data);
for (uint256 i =0; i < ids.length; i++) {
_balances[ids[i]][to] += amounts[i];
}
emit TransferBatch(operator, address(0), to, ids, amounts);
_doSafeBatchTransferAcceptanceCheck(operator, address(0), to, ids, amounts, data);
}
/**
* @dev Destroys `amount` tokens of token type `id` from `from`
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `from` must have at least `amount` tokens of token type `id`.
*/function_burn(addressfrom,
uint256 id,
uint256 amount
) internalvirtual{
require(from!=address(0), "ERC1155: burn from the zero address");
address operator = _msgSender();
_beforeTokenTransfer(operator, from, address(0), _asSingletonArray(id), _asSingletonArray(amount), "");
uint256 fromBalance = _balances[id][from];
require(fromBalance >= amount, "ERC1155: burn amount exceeds balance");
unchecked {
_balances[id][from] = fromBalance - amount;
}
emit TransferSingle(operator, from, address(0), id, amount);
}
/**
* @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_burn}.
*
* Requirements:
*
* - `ids` and `amounts` must have the same length.
*/function_burnBatch(addressfrom,
uint256[] memory ids,
uint256[] memory amounts
) internalvirtual{
require(from!=address(0), "ERC1155: burn from the zero address");
require(ids.length== amounts.length, "ERC1155: ids and amounts length mismatch");
address operator = _msgSender();
_beforeTokenTransfer(operator, from, address(0), ids, amounts, "");
for (uint256 i =0; i < ids.length; i++) {
uint256 id = ids[i];
uint256 amount = amounts[i];
uint256 fromBalance = _balances[id][from];
require(fromBalance >= amount, "ERC1155: burn amount exceeds balance");
unchecked {
_balances[id][from] = fromBalance - amount;
}
}
emit TransferBatch(operator, from, address(0), ids, amounts);
}
/**
* @dev Approve `operator` to operate on all of `owner` tokens
*
* Emits a {ApprovalForAll} event.
*/function_setApprovalForAll(address owner,
address operator,
bool approved
) internalvirtual{
require(owner != operator, "ERC1155: setting approval status for self");
_operatorApprovals[owner][operator] = approved;
emit ApprovalForAll(owner, operator, approved);
}
/**
* @dev Hook that is called before any token transfer. This includes minting
* and burning, as well as batched variants.
*
* The same hook is called on both single and batched variants. For single
* transfers, the length of the `id` and `amount` arrays will be 1.
*
* Calling conditions (for each `id` and `amount` pair):
*
* - When `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* of token type `id` will be transferred to `to`.
* - When `from` is zero, `amount` tokens of token type `id` will be minted
* for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens of token type `id`
* will be burned.
* - `from` and `to` are never both zero.
* - `ids` and `amounts` have the same, non-zero length.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/function_beforeTokenTransfer(address operator,
addressfrom,
address to,
uint256[] memory ids,
uint256[] memory amounts,
bytesmemory data
) internalvirtual{}
function_doSafeTransferAcceptanceCheck(address operator,
addressfrom,
address to,
uint256 id,
uint256 amount,
bytesmemory data
) private{
if (to.isContract()) {
try IERC1155Receiver(to).onERC1155Received(operator, from, id, amount, data) returns (bytes4 response) {
if (response != IERC1155Receiver.onERC1155Received.selector) {
revert("ERC1155: ERC1155Receiver rejected tokens");
}
} catchError(stringmemory reason) {
revert(reason);
} catch {
revert("ERC1155: transfer to non ERC1155Receiver implementer");
}
}
}
function_doSafeBatchTransferAcceptanceCheck(address operator,
addressfrom,
address to,
uint256[] memory ids,
uint256[] memory amounts,
bytesmemory data
) private{
if (to.isContract()) {
try IERC1155Receiver(to).onERC1155BatchReceived(operator, from, ids, amounts, data) returns (
bytes4 response
) {
if (response != IERC1155Receiver.onERC1155BatchReceived.selector) {
revert("ERC1155: ERC1155Receiver rejected tokens");
}
} catchError(stringmemory reason) {
revert(reason);
} catch {
revert("ERC1155: transfer to non ERC1155Receiver implementer");
}
}
}
function_asSingletonArray(uint256 element) privatepurereturns (uint256[] memory) {
uint256[] memory array =newuint256[](1);
array[0] = element;
return array;
}
}
Contract Source Code
File 9 of 29: ERC1155Burnable.sol
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts v4.4.1 (token/ERC1155/extensions/ERC1155Burnable.sol)pragmasolidity ^0.8.0;import"../ERC1155.sol";
/**
* @dev Extension of {ERC1155} that allows token holders to destroy both their
* own tokens and those that they have been approved to use.
*
* _Available since v3.1._
*/abstractcontractERC1155BurnableisERC1155{
functionburn(address account,
uint256 id,
uint256 value
) publicvirtual{
require(
account == _msgSender() || isApprovedForAll(account, _msgSender()),
"ERC1155: caller is not owner nor approved"
);
_burn(account, id, value);
}
functionburnBatch(address account,
uint256[] memory ids,
uint256[] memory values
) publicvirtual{
require(
account == _msgSender() || isApprovedForAll(account, _msgSender()),
"ERC1155: caller is not owner nor approved"
);
_burnBatch(account, ids, values);
}
}
Contract Source Code
File 10 of 29: ERC1155Pausable.sol
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts v4.4.1 (token/ERC1155/extensions/ERC1155Pausable.sol)pragmasolidity ^0.8.0;import"../ERC1155.sol";
import"../../../security/Pausable.sol";
/**
* @dev ERC1155 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.
*
* _Available since v3.1._
*/abstractcontractERC1155PausableisERC1155, Pausable{
/**
* @dev See {ERC1155-_beforeTokenTransfer}.
*
* Requirements:
*
* - the contract must not be paused.
*/function_beforeTokenTransfer(address operator,
addressfrom,
address to,
uint256[] memory ids,
uint256[] memory amounts,
bytesmemory data
) internalvirtualoverride{
super._beforeTokenTransfer(operator, from, to, ids, amounts, data);
require(!paused(), "ERC1155Pausable: token transfer while paused");
}
}
Contract Source Code
File 11 of 29: ERC1155PresetMinterPauser.sol
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC1155/presets/ERC1155PresetMinterPauser.sol)pragmasolidity ^0.8.0;import"../ERC1155.sol";
import"../extensions/ERC1155Burnable.sol";
import"../extensions/ERC1155Pausable.sol";
import"../../../access/AccessControlEnumerable.sol";
import"../../../utils/Context.sol";
/**
* @dev {ERC1155} token, including:
*
* - ability for holders to burn (destroy) their tokens
* - a minter role that allows for token minting (creation)
* - a pauser role that allows to stop all token transfers
*
* This contract uses {AccessControl} to lock permissioned functions using the
* different roles - head to its documentation for details.
*
* The account that deploys the contract will be granted the minter and pauser
* roles, as well as the default admin role, which will let it grant both minter
* and pauser roles to other accounts.
*
* _Deprecated in favor of https://wizard.openzeppelin.com/[Contracts Wizard]._
*/contractERC1155PresetMinterPauserisContext, AccessControlEnumerable, ERC1155Burnable, ERC1155Pausable{
bytes32publicconstant MINTER_ROLE =keccak256("MINTER_ROLE");
bytes32publicconstant PAUSER_ROLE =keccak256("PAUSER_ROLE");
/**
* @dev Grants `DEFAULT_ADMIN_ROLE`, `MINTER_ROLE`, and `PAUSER_ROLE` to the account that
* deploys the contract.
*/constructor(stringmemory uri) ERC1155(uri) {
_setupRole(DEFAULT_ADMIN_ROLE, _msgSender());
_setupRole(MINTER_ROLE, _msgSender());
_setupRole(PAUSER_ROLE, _msgSender());
}
/**
* @dev Creates `amount` new tokens for `to`, of token type `id`.
*
* See {ERC1155-_mint}.
*
* Requirements:
*
* - the caller must have the `MINTER_ROLE`.
*/functionmint(address to,
uint256 id,
uint256 amount,
bytesmemory data
) publicvirtual{
require(hasRole(MINTER_ROLE, _msgSender()), "ERC1155PresetMinterPauser: must have minter role to mint");
_mint(to, id, amount, data);
}
/**
* @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] variant of {mint}.
*/functionmintBatch(address to,
uint256[] memory ids,
uint256[] memory amounts,
bytesmemory data
) publicvirtual{
require(hasRole(MINTER_ROLE, _msgSender()), "ERC1155PresetMinterPauser: must have minter role to mint");
_mintBatch(to, ids, amounts, data);
}
/**
* @dev Pauses all token transfers.
*
* See {ERC1155Pausable} and {Pausable-_pause}.
*
* Requirements:
*
* - the caller must have the `PAUSER_ROLE`.
*/functionpause() publicvirtual{
require(hasRole(PAUSER_ROLE, _msgSender()), "ERC1155PresetMinterPauser: must have pauser role to pause");
_pause();
}
/**
* @dev Unpauses all token transfers.
*
* See {ERC1155Pausable} and {Pausable-_unpause}.
*
* Requirements:
*
* - the caller must have the `PAUSER_ROLE`.
*/functionunpause() publicvirtual{
require(hasRole(PAUSER_ROLE, _msgSender()), "ERC1155PresetMinterPauser: must have pauser role to unpause");
_unpause();
}
/**
* @dev See {IERC165-supportsInterface}.
*/functionsupportsInterface(bytes4 interfaceId)
publicviewvirtualoverride(AccessControlEnumerable, ERC1155)
returns (bool)
{
returnsuper.supportsInterface(interfaceId);
}
function_beforeTokenTransfer(address operator,
addressfrom,
address to,
uint256[] memory ids,
uint256[] memory amounts,
bytesmemory data
) internalvirtualoverride(ERC1155, ERC1155Pausable) {
super._beforeTokenTransfer(operator, from, to, ids, amounts, data);
}
}
Contract Source Code
File 12 of 29: ERC1155Tradable.sol
// SPDX-License-Identifier: MITpragmasolidity 0.8.12;import"@openzeppelin/contracts/access/AccessControl.sol";
import"@openzeppelin/contracts/token/ERC1155/presets/ERC1155PresetMinterPauser.sol";
import"@openzeppelin/contracts/utils/math/SafeMath.sol";
import"@openzeppelin/contracts/utils/Strings.sol";
import"@openzeppelin/contracts/security/ReentrancyGuard.sol";
import"./common/meta-transactions/ContentMixin.sol";
import"./common/meta-transactions/NativeMetaTransaction.sol";
import"./IERC1155Tradable.sol";
contractOwnableDelegateProxy{}
contractProxyRegistry{
mapping(address=> OwnableDelegateProxy) public proxies;
}
/**
* @title ERC1155Tradable
* ERC1155Tradable - ERC1155 contract that whitelists an operator address, has create and mint functionality, and supports useful standards from OpenZeppelin,
like _exists(), name(), symbol(), and totalSupply()
*/contractERC1155TradableisContextMixin, ERC1155PresetMinterPauser, NativeMetaTransaction, ReentrancyGuard, IERC1155Tradable{
eventOperatorChanged (address previous, address new_);
eventAdminChanged (address previous, address new_);
eventProxyRegistryAddressChanged (address previous, address new_);
eventCreateEvent (address _initialOwner, uint256 _id, uint256 _initialSupply, string _uri, address _operator);
eventMintEvent (address _to, uint256 _id, uint256 _quantity);
eventPriceChanged (uint256 _id, uint256 previous, uint256 new_);
usingStringsforstring;
usingSafeMathforuint256;
// super adminaddresspublic admin;// multi sig address// operatoraddresspublic operator;
addresspublic proxyRegistryAddress;
mapping(uint256=>address) public creators;
mapping(uint256=>uint256) public tokenSupply;
mapping(uint256=>string) customUri;
// Contract namestringpublic name;
// Contract symbolstringpublic symbol;
mapping(uint256=>uint256) public price_tokens;
mapping(uint256=>uint256) public max_supply_tokens;
/**
* @dev Require _msgSender() to be the creator of the token id
*/modifiercreatorOnly(uint256 _id) {
require(creators[_id] == _msgSender(), "ONLY_CREATOR");
_;
}
/**
* @dev Require _msgSender() to own more than 0 of the token id
*/modifierownersOnly(uint256 _id) {
require(balanceOf(_msgSender(), _id) >0, "ONLY_OWNERS");
_;
}
modifieroperatorOnly() {
require(_msgSender() == operator, "ONLY_OPERATOR");
require(hasRole(OPERATOR_ROLE, _msgSender()), "ONLY_OPERATOR");
_;
}
modifieradminOnly() {
require(_msgSender() == admin, "ONLY_ADMIN");
require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "ONLY_ADMIN");
_;
}
bytes32publicconstant CREATOR_ROLE =keccak256("CREATOR_ROLE");
bytes32publicconstant OPERATOR_ROLE =keccak256("OPERATOR_ROLE");
constructor(stringmemory _name,
stringmemory _symbol,
stringmemory _uri,
address _admin,
address _operator
) ERC1155PresetMinterPauser(_uri) {
name = _name;
symbol = _symbol;
proxyRegistryAddress =address(0);
_initializeEIP712(name);
admin = _admin;
// set role for admin address
grantRole(DEFAULT_ADMIN_ROLE, admin);
operator = _operator;
// set role for operator address
grantRole(OPERATOR_ROLE, operator);
grantRole(CREATOR_ROLE, operator);
grantRole(MINTER_ROLE, operator);
grantRole(PAUSER_ROLE, operator);
if (admin != _msgSender()) {
// revoke role for sender
revokeRole(MINTER_ROLE, _msgSender());
revokeRole(PAUSER_ROLE, _msgSender());
revokeRole(DEFAULT_ADMIN_ROLE, _msgSender());
}
}
functionchangePriceToken(uint256 _id, uint256 _price) publicoperatorOnly{
uint256 prev = price_tokens[_id];
price_tokens[_id] = _price;
emit PriceChanged(_id, prev, _price);
}
functiongetPriceToken(uint256 _id) publicviewreturns (uint256) {
return price_tokens[_id];
}
functiongetMaxSupplyToken(uint256 _id) publicviewreturns (uint256) {
return max_supply_tokens[_id];
}
// changeOperator: update operator by adminfunctionchangeOperator(address _newOperator) publicadminOnly{
require(_msgSender() == admin, "NOT_ADMIN");
require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "NOT_ADMIN");
address _previousOperator = operator;
operator = _newOperator;
grantRole(OPERATOR_ROLE, operator);
grantRole(CREATOR_ROLE, operator);
grantRole(MINTER_ROLE, operator);
grantRole(PAUSER_ROLE, operator);
revokeRole(OPERATOR_ROLE, _previousOperator);
revokeRole(CREATOR_ROLE, _previousOperator);
revokeRole(MINTER_ROLE, _previousOperator);
revokeRole(PAUSER_ROLE, _previousOperator);
emit OperatorChanged(_previousOperator, operator);
}
// changeOperator: update admin by old adminfunctionchangeAdmin(address _newAdmin) publicadminOnly{
require(_msgSender() == admin, "NOT_ADMIN");
require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "NOT_ADMIN");
address _previousAdmin = admin;
admin = _newAdmin;
grantRole(DEFAULT_ADMIN_ROLE, admin);
// grantRole(CREATOR_ROLE, admin);// grantRole(MINTER_ROLE, admin);// grantRole(PAUSER_ROLE, admin);// revokeRole(CREATOR_ROLE, admin);// revokeRole(MINTER_ROLE, admin);// revokeRole(PAUSER_ROLE, admin);
revokeRole(DEFAULT_ADMIN_ROLE, _previousAdmin);
emit AdminChanged(_previousAdmin, admin);
}
functionuri(uint256 _id
) overridepublicviewreturns (stringmemory) {
require(_exists(_id), "NONEXISTENT_TOKEN");
// We have to convert string to bytes to check for existencebytesmemory customUriBytes =bytes(customUri[_id]);
if (customUriBytes.length>0) {
return customUri[_id];
} else {
returnsuper.uri(_id);
}
}
/**
* @dev Returns the total quantity for a token ID
* @param _id uint256 ID of the token to query
* @return amount of token in existence
*/functiontotalSupply(uint256 _id
) publicviewreturns (uint256) {
return tokenSupply[_id];
}
/**
* @dev Sets a new URI for all token types, by relying on the token type ID
* substitution mechanism
* https://eips.ethereum.org/EIPS/eip-1155#metadata[defined in the EIP].
* @param _newURI New URI for all tokens
*/functionsetURI(stringmemory _newURI
) publicoperatorOnly{
require(hasRole(CREATOR_ROLE, _msgSender()), "ONLY_CREATOR");
_setURI(_newURI);
}
/**
* @dev Will update the base URI for the token
* @param _tokenId The token to update. _msgSender() must be its creator.
* @param _newURI New URI for the token.
*/functionsetCustomURI(uint256 _tokenId,
stringmemory _newURI
) publiccreatorOnly(_tokenId) {
require(hasRole(CREATOR_ROLE, _msgSender()), "ONLY_CREATOR");
customUri[_tokenId] = _newURI;
emit URI(_newURI, _tokenId);
}
/**
* @dev Creates a new token type and assigns _initialSupply to an address
* NOTE: The token id must be passed. This allows lazy creation of tokens or
* creating NFTs by setting the id's high bits with the method
* described in ERC1155 or to use ids representing values other than
* successive small integers. If you wish to create ids as successive
* small integers you can either subclass this class to count onchain
* or maintain the offchain cache of identifiers recommended in
* ERC1155 and calculate successive ids from that.
* @param _initialOwner address of the first owner of the token
* @param _id The id of the token to create (must not currenty exist).
* @param _initialSupply amount to supply the first owner
* @param _uri Optional URI for this token type
* @param _data Data to pass if receiver is contract
* @return The newly created token ID
*/functioncreate(address _initialOwner,
uint256 _id,
uint256 _initialSupply,
stringmemory _uri,
bytesmemory _data,
uint256 _price,
uint256 _max
) virtualpublicoperatorOnlyreturns (uint256) {
require(hasRole(CREATOR_ROLE, _msgSender()), "NOT_CREATOR");
require(!_exists(_id), "ALREADY_EXIST");
if (_max >0) {
require(_initialSupply <= _max, "REACH_MAX");
}
creators[_id] = _msgSender();
if (bytes(_uri).length>0) {
customUri[_id] = _uri;
emit URI(_uri, _id);
}
_mint(_initialOwner, _id, _initialSupply, _data);
tokenSupply[_id] = _initialSupply;
price_tokens[_id] = _price;
max_supply_tokens[_id] = _max;
emit CreateEvent(_initialOwner, _id, _initialSupply, _uri, operator);
return _id;
}
/**
* @dev Mints some amount of tokens to an address
* @param _to Address of the future owner of the token
* @param _id Token ID to mint
* @param _quantity Amount of tokens to mint
* @param _data Data to pass if receiver is contract
*/functionmint(address _to,
uint256 _id,
uint256 _quantity,
bytesmemory _data
) virtualpublicoverridecreatorOnly(_id) {
require(_exists(_id), "NONEXIST_TOKEN");
require(hasRole(MINTER_ROLE, _msgSender()), "NOT_MINTER");
if (max_supply_tokens[_id] !=0) {
require(tokenSupply[_id].add(_quantity) <= max_supply_tokens[_id], "REACH_MAX");
}
_mint(_to, _id, _quantity, _data);
tokenSupply[_id] = tokenSupply[_id].add(_quantity);
emit MintEvent(_to, _id, _quantity);
}
/**
* @dev Mints some amount of tokens to an address
* @param _to Address of the future owner of the token
* @param _id Token ID to mint
* @param _quantity Amount of tokens to mint
* @param _data Data to pass if receiver is contract
*/functionuserMint(address _to,
uint256 _id,
uint256 _quantity,
bytesmemory _data
) virtualpublicpayable{
require(_exists(_id), "NONEXIST_TOKEN");
if (price_tokens[_id] >0) {
require(msg.value>= price_tokens[_id] * _quantity, "MISS_PRICE");
} else {
require(_quantity <=1, "MAX_QUANTITY");
}
if (max_supply_tokens[_id] !=0) {
require(tokenSupply[_id].add(_quantity) <= max_supply_tokens[_id], "REACH_MAX");
}
_mint(_to, _id, _quantity, _data);
tokenSupply[_id] = tokenSupply[_id].add(_quantity);
emit MintEvent(_to, _id, _quantity);
}
/**
* @dev Mint tokens for each id in _ids
* @param _to The address to mint tokens to
* @param _ids Array of ids to mint
* @param _quantities Array of amounts of tokens to mint per id
* @param _data Data to pass if receiver is contract
*/functionbatchMint(address _to,
uint256[] memory _ids,
uint256[] memory _quantities,
bytesmemory _data
) publicoperatorOnly{
require(hasRole(MINTER_ROLE, _msgSender()), "NOT_MINTER");
for (uint256 i =0; i < _ids.length; i++) {
uint256 _id = _ids[i];
require(creators[_id] == _msgSender(), "ONLY_CREATOR");
uint256 quantity = _quantities[i];
tokenSupply[_id] = tokenSupply[_id].add(quantity);
}
_mintBatch(_to, _ids, _quantities, _data);
}
/**
* @dev Change the creator address for given tokens
* @param _to Address of the new creator
* @param _ids Array of Token IDs to change creator
*/functionsetCreator(address _to,
uint256[] memory _ids
) publicoperatorOnly{
require(_to !=address(0), "INVALID_ADDRESS.");
_grantRole(CREATOR_ROLE, _to);
_grantRole(MINTER_ROLE, _to);
for (uint256 i =0; i < _ids.length; i++) {
uint256 id = _ids[i];
_setCreator(_to, id);
}
}
functionsetProxyRegistryAddress(address _proxyRegistryAddress) publicoperatorOnly{
require(_proxyRegistryAddress != proxyRegistryAddress, "PROXY_INVALID");
address previous = proxyRegistryAddress;
proxyRegistryAddress = _proxyRegistryAddress;
emit ProxyRegistryAddressChanged(previous, proxyRegistryAddress);
}
/**
* Override isApprovedForAll to whitelist user's [OpenSea] proxy accounts to enable gas-free listings.
*/functionisApprovedForAll(address _owner,
address _operator
) override(ERC1155, IERC1155) publicviewreturns (bool isOperator) {
if (proxyRegistryAddress !=address(0)) {
// Whitelist OpenSea proxy contract for easy trading.
ProxyRegistry proxyRegistry = ProxyRegistry(proxyRegistryAddress);
if (address(proxyRegistry.proxies(_owner)) == _operator) {
returntrue;
}
}
return ERC1155.isApprovedForAll(_owner, _operator);
}
/**
* @dev Change the creator address for given token
* @param _to Address of the new creator
* @param _id Token IDs to change creator of
*/function_setCreator(address _to, uint256 _id) internalcreatorOnly(_id)
{
creators[_id] = _to;
}
/**
* @dev Returns whether the specified token exists by checking to see if it has a creator
* @param _id uint256 ID of the token to query the existence of
* @return bool whether the token exists
*/function_exists(uint256 _id
) internalviewreturns (bool) {
return creators[_id] !=address(0);
}
functionexists(uint256 _id
) externalviewreturns (bool) {
return _exists(_id);
}
functiongetCreator(uint256 id)
publicviewreturns (address sender)
{
return creators[id];
}
functionsupportsInterface(bytes4 interfaceId) publicviewvirtualoverride(ERC1155PresetMinterPauser, IERC165) returns (bool) {
return
interfaceId ==type(IERC1155Tradable).interfaceId||super.supportsInterface(interfaceId);
}
/**
* This is used instead of msg.sender as transactions won't be sent by the original token owner, but by OpenSea.
*/function_msgSender()
internaloverrideviewreturns (address sender)
{
return ContextMixin.msgSender();
}
/** @dev EIP2981 royalties implementation. */structRoyaltyInfo {
address recipient;
uint24 amount;
bool isValue;
}
mapping(uint256=> RoyaltyInfo) public royalties;
functionsetTokenRoyalty(uint256 _tokenId,
address _recipient,
uint256 _value
) publicoperatorOnly{
require(hasRole(CREATOR_ROLE, _msgSender()), "NOT_CREATOR");
require(_value <=10000, 'TOO_HIGH');
royalties[_tokenId] = RoyaltyInfo(_recipient, uint24(_value), true);
}
// EIP2981 standard royalties return.functionroyaltyInfo(uint256 _tokenId, uint256 _salePrice) externalviewoverridereturns (address receiver, uint256 royaltyAmount)
{
RoyaltyInfo memory royalty = royalties[_tokenId];
if (royalty.isValue) {
receiver = royalty.recipient;
royaltyAmount = (_salePrice * royalty.amount) /10000;
} else {
receiver = creators[_tokenId];
royaltyAmount = (_salePrice *500) /10000;
}
}
// Withdrawfunctionwithdraw(address _to) externalnonReentrantadminOnly{
require(address(this).balance>0, "NOT_ENOUGH");
(bool success,) = _to.call{value : address(this).balance}("");
require(success, "FAIL");
}
}
Contract Source Code
File 13 of 29: ERC165.sol
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)pragmasolidity ^0.8.0;import"./IERC165.sol";
/**
* @dev Implementation of the {IERC165} interface.
*
* Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
* for the additional interface id that will be supported. For example:
*
* ```solidity
* function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
* return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
* }
* ```
*
* Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
*/abstractcontractERC165isIERC165{
/**
* @dev See {IERC165-supportsInterface}.
*/functionsupportsInterface(bytes4 interfaceId) publicviewvirtualoverridereturns (bool) {
return interfaceId ==type(IERC165).interfaceId;
}
}
Contract Source Code
File 14 of 29: EnumerableSet.sol
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts v4.4.1 (utils/structs/EnumerableSet.sol)pragmasolidity ^0.8.0;/**
* @dev Library for managing
* https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive
* types.
*
* Sets have the following properties:
*
* - Elements are added, removed, and checked for existence in constant time
* (O(1)).
* - Elements are enumerated in O(n). No guarantees are made on the ordering.
*
* ```
* contract Example {
* // Add the library methods
* using EnumerableSet for EnumerableSet.AddressSet;
*
* // Declare a set state variable
* EnumerableSet.AddressSet private mySet;
* }
* ```
*
* As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`)
* and `uint256` (`UintSet`) are supported.
*/libraryEnumerableSet{
// To implement this library for multiple types with as little code// repetition as possible, we write it in terms of a generic Set type with// bytes32 values.// The Set implementation uses private functions, and user-facing// implementations (such as AddressSet) are just wrappers around the// underlying Set.// This means that we can only create new EnumerableSets for types that fit// in bytes32.structSet {
// Storage of set valuesbytes32[] _values;
// Position of the value in the `values` array, plus 1 because index 0// means a value is not in the set.mapping(bytes32=>uint256) _indexes;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/function_add(Set storage set, bytes32 value) privatereturns (bool) {
if (!_contains(set, value)) {
set._values.push(value);
// The value is stored at length-1, but we add 1 to all indexes// and use 0 as a sentinel value
set._indexes[value] = set._values.length;
returntrue;
} else {
returnfalse;
}
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/function_remove(Set storage set, bytes32 value) privatereturns (bool) {
// We read and store the value's index to prevent multiple reads from the same storage slotuint256 valueIndex = set._indexes[value];
if (valueIndex !=0) {
// Equivalent to contains(set, value)// To delete an element from the _values array in O(1), we swap the element to delete with the last one in// the array, and then remove the last element (sometimes called as 'swap and pop').// This modifies the order of the array, as noted in {at}.uint256 toDeleteIndex = valueIndex -1;
uint256 lastIndex = set._values.length-1;
if (lastIndex != toDeleteIndex) {
bytes32 lastvalue = set._values[lastIndex];
// Move the last value to the index where the value to delete is
set._values[toDeleteIndex] = lastvalue;
// Update the index for the moved value
set._indexes[lastvalue] = valueIndex; // Replace lastvalue's index to valueIndex
}
// Delete the slot where the moved value was stored
set._values.pop();
// Delete the index for the deleted slotdelete set._indexes[value];
returntrue;
} else {
returnfalse;
}
}
/**
* @dev Returns true if the value is in the set. O(1).
*/function_contains(Set storage set, bytes32 value) privateviewreturns (bool) {
return set._indexes[value] !=0;
}
/**
* @dev Returns the number of values on the set. O(1).
*/function_length(Set storage set) privateviewreturns (uint256) {
return set._values.length;
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/function_at(Set storage set, uint256 index) privateviewreturns (bytes32) {
return set._values[index];
}
/**
* @dev Return the entire set in an array
*
* WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
* to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
* this function has an unbounded cost, and using it as part of a state-changing function may render the function
* uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
*/function_values(Set storage set) privateviewreturns (bytes32[] memory) {
return set._values;
}
// Bytes32SetstructBytes32Set {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/functionadd(Bytes32Set storage set, bytes32 value) internalreturns (bool) {
return _add(set._inner, value);
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/functionremove(Bytes32Set storage set, bytes32 value) internalreturns (bool) {
return _remove(set._inner, value);
}
/**
* @dev Returns true if the value is in the set. O(1).
*/functioncontains(Bytes32Set storage set, bytes32 value) internalviewreturns (bool) {
return _contains(set._inner, value);
}
/**
* @dev Returns the number of values in the set. O(1).
*/functionlength(Bytes32Set storage set) internalviewreturns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/functionat(Bytes32Set storage set, uint256 index) internalviewreturns (bytes32) {
return _at(set._inner, index);
}
/**
* @dev Return the entire set in an array
*
* WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
* to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
* this function has an unbounded cost, and using it as part of a state-changing function may render the function
* uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
*/functionvalues(Bytes32Set storage set) internalviewreturns (bytes32[] memory) {
return _values(set._inner);
}
// AddressSetstructAddressSet {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/functionadd(AddressSet storage set, address value) internalreturns (bool) {
return _add(set._inner, bytes32(uint256(uint160(value))));
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/functionremove(AddressSet storage set, address value) internalreturns (bool) {
return _remove(set._inner, bytes32(uint256(uint160(value))));
}
/**
* @dev Returns true if the value is in the set. O(1).
*/functioncontains(AddressSet storage set, address value) internalviewreturns (bool) {
return _contains(set._inner, bytes32(uint256(uint160(value))));
}
/**
* @dev Returns the number of values in the set. O(1).
*/functionlength(AddressSet storage set) internalviewreturns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/functionat(AddressSet storage set, uint256 index) internalviewreturns (address) {
returnaddress(uint160(uint256(_at(set._inner, index))));
}
/**
* @dev Return the entire set in an array
*
* WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
* to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
* this function has an unbounded cost, and using it as part of a state-changing function may render the function
* uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
*/functionvalues(AddressSet storage set) internalviewreturns (address[] memory) {
bytes32[] memory store = _values(set._inner);
address[] memory result;
assembly {
result := store
}
return result;
}
// UintSetstructUintSet {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/functionadd(UintSet storage set, uint256 value) internalreturns (bool) {
return _add(set._inner, bytes32(value));
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/functionremove(UintSet storage set, uint256 value) internalreturns (bool) {
return _remove(set._inner, bytes32(value));
}
/**
* @dev Returns true if the value is in the set. O(1).
*/functioncontains(UintSet storage set, uint256 value) internalviewreturns (bool) {
return _contains(set._inner, bytes32(value));
}
/**
* @dev Returns the number of values on the set. O(1).
*/functionlength(UintSet storage set) internalviewreturns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/functionat(UintSet storage set, uint256 index) internalviewreturns (uint256) {
returnuint256(_at(set._inner, index));
}
/**
* @dev Return the entire set in an array
*
* WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
* to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
* this function has an unbounded cost, and using it as part of a state-changing function may render the function
* uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
*/functionvalues(UintSet storage set) internalviewreturns (uint256[] memory) {
bytes32[] memory store = _values(set._inner);
uint256[] memory result;
assembly {
result := store
}
return result;
}
}
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts v4.4.1 (access/IAccessControl.sol)pragmasolidity ^0.8.0;/**
* @dev External interface of AccessControl declared to support ERC165 detection.
*/interfaceIAccessControl{
/**
* @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`
*
* `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite
* {RoleAdminChanged} not being emitted signaling this.
*
* _Available since v3.1._
*/eventRoleAdminChanged(bytes32indexed role, bytes32indexed previousAdminRole, bytes32indexed newAdminRole);
/**
* @dev Emitted when `account` is granted `role`.
*
* `sender` is the account that originated the contract call, an admin role
* bearer except when using {AccessControl-_setupRole}.
*/eventRoleGranted(bytes32indexed role, addressindexed account, addressindexed sender);
/**
* @dev Emitted when `account` is revoked `role`.
*
* `sender` is the account that originated the contract call:
* - if using `revokeRole`, it is the admin role bearer
* - if using `renounceRole`, it is the role bearer (i.e. `account`)
*/eventRoleRevoked(bytes32indexed role, addressindexed account, addressindexed sender);
/**
* @dev Returns `true` if `account` has been granted `role`.
*/functionhasRole(bytes32 role, address account) externalviewreturns (bool);
/**
* @dev Returns the admin role that controls `role`. See {grantRole} and
* {revokeRole}.
*
* To change a role's admin, use {AccessControl-_setRoleAdmin}.
*/functiongetRoleAdmin(bytes32 role) externalviewreturns (bytes32);
/**
* @dev Grants `role` to `account`.
*
* If `account` had not been already granted `role`, emits a {RoleGranted}
* event.
*
* Requirements:
*
* - the caller must have ``role``'s admin role.
*/functiongrantRole(bytes32 role, address account) external;
/**
* @dev Revokes `role` from `account`.
*
* If `account` had been granted `role`, emits a {RoleRevoked} event.
*
* Requirements:
*
* - the caller must have ``role``'s admin role.
*/functionrevokeRole(bytes32 role, address account) external;
/**
* @dev Revokes `role` from the calling account.
*
* Roles are often managed via {grantRole} and {revokeRole}: this function's
* purpose is to provide a mechanism for accounts to lose their privileges
* if they are compromised (such as when a trusted device is misplaced).
*
* If the calling account had been granted `role`, emits a {RoleRevoked}
* event.
*
* Requirements:
*
* - the caller must be `account`.
*/functionrenounceRole(bytes32 role, address account) external;
}
Contract Source Code
File 17 of 29: IAccessControlEnumerable.sol
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts v4.4.1 (access/IAccessControlEnumerable.sol)pragmasolidity ^0.8.0;import"./IAccessControl.sol";
/**
* @dev External interface of AccessControlEnumerable declared to support ERC165 detection.
*/interfaceIAccessControlEnumerableisIAccessControl{
/**
* @dev Returns one of the accounts that have `role`. `index` must be a
* value between 0 and {getRoleMemberCount}, non-inclusive.
*
* Role bearers are not sorted in any particular way, and their ordering may
* change at any point.
*
* WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure
* you perform all queries on the same block. See the following
* https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post]
* for more information.
*/functiongetRoleMember(bytes32 role, uint256 index) externalviewreturns (address);
/**
* @dev Returns the number of accounts that have `role`. Can be used
* together with {getRoleMember} to enumerate all bearers of a role.
*/functiongetRoleMemberCount(bytes32 role) externalviewreturns (uint256);
}
Contract Source Code
File 18 of 29: IERC1155.sol
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts v4.4.1 (token/ERC1155/IERC1155.sol)pragmasolidity ^0.8.0;import"../../utils/introspection/IERC165.sol";
/**
* @dev Required interface of an ERC1155 compliant contract, as defined in the
* https://eips.ethereum.org/EIPS/eip-1155[EIP].
*
* _Available since v3.1._
*/interfaceIERC1155isIERC165{
/**
* @dev Emitted when `value` tokens of token type `id` are transferred from `from` to `to` by `operator`.
*/eventTransferSingle(addressindexed operator, addressindexedfrom, addressindexed to, uint256 id, uint256 value);
/**
* @dev Equivalent to multiple {TransferSingle} events, where `operator`, `from` and `to` are the same for all
* transfers.
*/eventTransferBatch(addressindexed operator,
addressindexedfrom,
addressindexed to,
uint256[] ids,
uint256[] values
);
/**
* @dev Emitted when `account` grants or revokes permission to `operator` to transfer their tokens, according to
* `approved`.
*/eventApprovalForAll(addressindexed account, addressindexed operator, bool approved);
/**
* @dev Emitted when the URI for token type `id` changes to `value`, if it is a non-programmatic URI.
*
* If an {URI} event was emitted for `id`, the standard
* https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[guarantees] that `value` will equal the value
* returned by {IERC1155MetadataURI-uri}.
*/eventURI(string value, uint256indexed id);
/**
* @dev Returns the amount of tokens of token type `id` owned by `account`.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/functionbalanceOf(address account, uint256 id) externalviewreturns (uint256);
/**
* @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {balanceOf}.
*
* Requirements:
*
* - `accounts` and `ids` must have the same length.
*/functionbalanceOfBatch(address[] calldata accounts, uint256[] calldata ids)
externalviewreturns (uint256[] memory);
/**
* @dev Grants or revokes permission to `operator` to transfer the caller's tokens, according to `approved`,
*
* Emits an {ApprovalForAll} event.
*
* Requirements:
*
* - `operator` cannot be the caller.
*/functionsetApprovalForAll(address operator, bool approved) external;
/**
* @dev Returns true if `operator` is approved to transfer ``account``'s tokens.
*
* See {setApprovalForAll}.
*/functionisApprovedForAll(address account, address operator) externalviewreturns (bool);
/**
* @dev Transfers `amount` tokens of token type `id` from `from` to `to`.
*
* Emits a {TransferSingle} event.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - If the caller is not `from`, it must be have been approved to spend ``from``'s tokens via {setApprovalForAll}.
* - `from` must have a balance of tokens of type `id` of at least `amount`.
* - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the
* acceptance magic value.
*/functionsafeTransferFrom(addressfrom,
address to,
uint256 id,
uint256 amount,
bytescalldata data
) external;
/**
* @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {safeTransferFrom}.
*
* Emits a {TransferBatch} event.
*
* Requirements:
*
* - `ids` and `amounts` must have the same length.
* - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the
* acceptance magic value.
*/functionsafeBatchTransferFrom(addressfrom,
address to,
uint256[] calldata ids,
uint256[] calldata amounts,
bytescalldata data
) external;
}
Contract Source Code
File 19 of 29: IERC1155MetadataURI.sol
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts v4.4.1 (token/ERC1155/extensions/IERC1155MetadataURI.sol)pragmasolidity ^0.8.0;import"../IERC1155.sol";
/**
* @dev Interface of the optional ERC1155MetadataExtension interface, as defined
* in the https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[EIP].
*
* _Available since v3.1._
*/interfaceIERC1155MetadataURIisIERC1155{
/**
* @dev Returns the URI for token type `id`.
*
* If the `\{id\}` substring is present in the URI, it must be replaced by
* clients with the actual token type ID.
*/functionuri(uint256 id) externalviewreturns (stringmemory);
}
Contract Source Code
File 20 of 29: IERC1155Receiver.sol
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC1155/IERC1155Receiver.sol)pragmasolidity ^0.8.0;import"../../utils/introspection/IERC165.sol";
/**
* @dev _Available since v3.1._
*/interfaceIERC1155ReceiverisIERC165{
/**
* @dev Handles the receipt of a single ERC1155 token type. This function is
* called at the end of a `safeTransferFrom` after the balance has been updated.
*
* NOTE: To accept the transfer, this must return
* `bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))`
* (i.e. 0xf23a6e61, or its own function selector).
*
* @param operator The address which initiated the transfer (i.e. msg.sender)
* @param from The address which previously owned the token
* @param id The ID of the token being transferred
* @param value The amount of tokens being transferred
* @param data Additional data with no specified format
* @return `bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))` if transfer is allowed
*/functiononERC1155Received(address operator,
addressfrom,
uint256 id,
uint256 value,
bytescalldata data
) externalreturns (bytes4);
/**
* @dev Handles the receipt of a multiple ERC1155 token types. This function
* is called at the end of a `safeBatchTransferFrom` after the balances have
* been updated.
*
* NOTE: To accept the transfer(s), this must return
* `bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))`
* (i.e. 0xbc197c81, or its own function selector).
*
* @param operator The address which initiated the batch transfer (i.e. msg.sender)
* @param from The address which previously owned the token
* @param ids An array containing ids of each token being transferred (order and length must match values array)
* @param values An array containing amounts of each token being transferred (order and length must match ids array)
* @param data Additional data with no specified format
* @return `bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))` if transfer is allowed
*/functiononERC1155BatchReceived(address operator,
addressfrom,
uint256[] calldata ids,
uint256[] calldata values,
bytescalldata data
) externalreturns (bytes4);
}
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)pragmasolidity ^0.8.0;/**
* @dev Interface of the ERC165 standard, as defined in the
* https://eips.ethereum.org/EIPS/eip-165[EIP].
*
* Implementers can declare support of contract interfaces, which can then be
* queried by others ({ERC165Checker}).
*
* For an implementation, see {ERC165}.
*/interfaceIERC165{
/**
* @dev Returns true if this contract implements the interface defined by
* `interfaceId`. See the corresponding
* https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
* to learn more about how these ids are created.
*
* This function call must use less than 30 000 gas.
*/functionsupportsInterface(bytes4 interfaceId) externalviewreturns (bool);
}
Contract Source Code
File 23 of 29: IERC2981.sol
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts (last updated v4.5.0) (interfaces/IERC2981.sol)pragmasolidity ^0.8.0;import"./IERC165.sol";
/**
* @dev Interface for the NFT Royalty Standard.
*
* A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal
* support for royalty payments across all NFT marketplaces and ecosystem participants.
*
* _Available since v4.5._
*/interfaceIERC2981isIERC165{
/**
* @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of
* exchange. The royalty amount is denominated and should be payed in that same unit of exchange.
*/functionroyaltyInfo(uint256 tokenId, uint256 salePrice)
externalviewreturns (address receiver, uint256 royaltyAmount);
}
// SPDX-License-Identifier: MITpragmasolidity 0.8.12;import {EIP712Base} from"./EIP712Base.sol";
contractNativeMetaTransactionisEIP712Base{
bytes32privateconstant M_TX_HASH =keccak256(
bytes(
"MetaTransaction(nonce,from,signature)"
)
);
eventMetaTransactionExecuted(address userAddress,
addresspayable relayerAddress,
bytes functionSignature
);
mapping(address=>uint256) nonces;
/*
* Meta transaction structure.
* No point of including value field here as if user is doing value transfer then he has the funds to pay for gas
* He should call the desired function directly in that case.
*/structMetaTransaction {
uint256 nonce;
addressfrom;
bytes functionSignature;
}
functionexecuteMetaTransaction(address userAddress,
bytesmemory functionSignature,
bytes32 sigR,
bytes32 sigS,
uint8 sigV
) publicreturns (bytesmemory) {
MetaTransaction memory metaTx = MetaTransaction({
nonce: nonces[userAddress],
from: userAddress,
functionSignature: functionSignature
});
require(
verify(userAddress, metaTx, sigR, sigS, sigV),
"Signer and signature do not match"
);
// increase nonce for user (to avoid re-use)
nonces[userAddress] = nonces[userAddress] +1;
emit MetaTransactionExecuted(
userAddress,
payable(msg.sender),
functionSignature
);
// Append userAddress and relayer address at the end to extract it from calling context
(bool success, bytesmemory returnData) =address(this).call(
abi.encodePacked(functionSignature, userAddress)
);
require(success, "fail");
return returnData;
}
functionhashMetaTransaction(MetaTransaction memory metaTx)
internalpurereturns (bytes32)
{
returnkeccak256(
abi.encode(
M_TX_HASH,
metaTx.nonce,
metaTx.from,
keccak256(metaTx.functionSignature)
)
);
}
functiongetNonce(address user) publicviewreturns (uint256 nonce) {
nonce = nonces[user];
}
functionverify(address signer,
MetaTransaction memory metaTx,
bytes32 sigR,
bytes32 sigS,
uint8 sigV
) internalviewreturns (bool) {
require(signer !=address(0), "IN_SIGNER");
return
signer ==ecrecover(
toTypedMessageHash(hashMetaTransaction(metaTx)),
sigV,
sigR,
sigS
);
}
}
Contract Source Code
File 26 of 29: Pausable.sol
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts v4.4.1 (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 Returns true if the contract is paused, and false otherwise.
*/functionpaused() publicviewvirtualreturns (bool) {
return _paused;
}
/**
* @dev Modifier to make a function callable only when the contract is not paused.
*
* Requirements:
*
* - The contract must not be paused.
*/modifierwhenNotPaused() {
require(!paused(), "Pausable: paused");
_;
}
/**
* @dev Modifier to make a function callable only when the contract is paused.
*
* Requirements:
*
* - The contract must be paused.
*/modifierwhenPaused() {
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());
}
}
Contract Source Code
File 27 of 29: ReentrancyGuard.sol
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts v4.4.1 (security/ReentrancyGuard.sol)pragmasolidity ^0.8.0;/**
* @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].
*/abstractcontractReentrancyGuard{
// 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.uint256privateconstant _NOT_ENTERED =1;
uint256privateconstant _ENTERED =2;
uint256private _status;
constructor() {
_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.
*/modifiernonReentrant() {
// On the first call to nonReentrant, _notEntered will be truerequire(_status != _ENTERED, "ReentrancyGuard: reentrant call");
// Any calls to nonReentrant after this point will fail
_status = _ENTERED;
_;
// By storing the original value once again, a refund is triggered (see// https://eips.ethereum.org/EIPS/eip-2200)
_status = _NOT_ENTERED;
}
}
Contract Source Code
File 28 of 29: SafeMath.sol
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts v4.4.1 (utils/math/SafeMath.sol)pragmasolidity ^0.8.0;// CAUTION// This version of SafeMath should only be used with Solidity 0.8 or later,// because it relies on the compiler's built in overflow checks./**
* @dev Wrappers over Solidity's arithmetic operations.
*
* NOTE: `SafeMath` is generally not needed starting with Solidity 0.8, since the compiler
* now has built in overflow checking.
*/librarySafeMath{
/**
* @dev Returns the addition of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/functiontryAdd(uint256 a, uint256 b) internalpurereturns (bool, uint256) {
unchecked {
uint256 c = a + b;
if (c < a) return (false, 0);
return (true, c);
}
}
/**
* @dev Returns the substraction of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/functiontrySub(uint256 a, uint256 b) internalpurereturns (bool, uint256) {
unchecked {
if (b > a) return (false, 0);
return (true, a - b);
}
}
/**
* @dev Returns the multiplication of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/functiontryMul(uint256 a, uint256 b) internalpurereturns (bool, uint256) {
unchecked {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the// benefit is lost if 'b' is also tested.// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522if (a ==0) return (true, 0);
uint256 c = a * b;
if (c / a != b) return (false, 0);
return (true, c);
}
}
/**
* @dev Returns the division of two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/functiontryDiv(uint256 a, uint256 b) internalpurereturns (bool, uint256) {
unchecked {
if (b ==0) return (false, 0);
return (true, a / b);
}
}
/**
* @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/functiontryMod(uint256 a, uint256 b) internalpurereturns (bool, uint256) {
unchecked {
if (b ==0) return (false, 0);
return (true, a % b);
}
}
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/functionadd(uint256 a, uint256 b) internalpurereturns (uint256) {
return a + b;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/functionsub(uint256 a, uint256 b) internalpurereturns (uint256) {
return a - b;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/functionmul(uint256 a, uint256 b) internalpurereturns (uint256) {
return a * b;
}
/**
* @dev Returns the integer division of two unsigned integers, reverting on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator.
*
* Requirements:
*
* - The divisor cannot be zero.
*/functiondiv(uint256 a, uint256 b) internalpurereturns (uint256) {
return a / b;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/functionmod(uint256 a, uint256 b) internalpurereturns (uint256) {
return a % b;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {trySub}.
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/functionsub(uint256 a,
uint256 b,
stringmemory errorMessage
) internalpurereturns (uint256) {
unchecked {
require(b <= a, errorMessage);
return a - b;
}
}
/**
* @dev Returns the integer division of two unsigned integers, reverting with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/functiondiv(uint256 a,
uint256 b,
stringmemory errorMessage
) internalpurereturns (uint256) {
unchecked {
require(b >0, errorMessage);
return a / b;
}
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting with custom message when dividing by zero.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryMod}.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/functionmod(uint256 a,
uint256 b,
stringmemory errorMessage
) internalpurereturns (uint256) {
unchecked {
require(b >0, errorMessage);
return a % b;
}
}
}
Contract Source Code
File 29 of 29: Strings.sol
// SPDX-License-Identifier: MIT// OpenZeppelin Contracts v4.4.1 (utils/Strings.sol)pragmasolidity ^0.8.0;/**
* @dev String operations.
*/libraryStrings{
bytes16privateconstant _HEX_SYMBOLS ="0123456789abcdef";
/**
* @dev Converts a `uint256` to its ASCII `string` decimal representation.
*/functiontoString(uint256 value) internalpurereturns (stringmemory) {
// Inspired by OraclizeAPI's implementation - MIT licence// https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.solif (value ==0) {
return"0";
}
uint256 temp = value;
uint256 digits;
while (temp !=0) {
digits++;
temp /=10;
}
bytesmemory buffer =newbytes(digits);
while (value !=0) {
digits -=1;
buffer[digits] =bytes1(uint8(48+uint256(value %10)));
value /=10;
}
returnstring(buffer);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
*/functiontoHexString(uint256 value) internalpurereturns (stringmemory) {
if (value ==0) {
return"0x00";
}
uint256 temp = value;
uint256 length =0;
while (temp !=0) {
length++;
temp >>=8;
}
return toHexString(value, length);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
*/functiontoHexString(uint256 value, uint256 length) internalpurereturns (stringmemory) {
bytesmemory buffer =newbytes(2* length +2);
buffer[0] ="0";
buffer[1] ="x";
for (uint256 i =2* length +1; i >1; --i) {
buffer[i] = _HEX_SYMBOLS[value &0xf];
value >>=4;
}
require(value ==0, "Strings: hex length insufficient");
returnstring(buffer);
}
}