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Overview
ETH Balance
0.026 ETH
Eth Value
$93.68 (@ $3,603.14/ETH)More Info
Private Name Tags
ContractCreator
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Contract Name:
SaleClockAuction
Compiler Version
v0.4.24+commit.e67f0147
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity)
/**
*Submitted for verification at Etherscan.io on 2019-01-09
*/
pragma solidity ^0.4.23;
/**
* @title SafeMath
* @dev Math operations with safety checks that throw on error
*/
library SafeMath {
int256 constant private INT256_MIN = -2**255;
/**
* @dev Multiplies two unsigned integers, reverts on overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// 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-solidity/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b);
return c;
}
/**
* @dev Multiplies two signed integers, reverts on overflow.
*/
function mul(int256 a, int256 b) internal pure returns (int256) {
// 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-solidity/pull/522
if (a == 0) {
return 0;
}
require(!(a == -1 && b == INT256_MIN)); // This is the only case of overflow not detected by the check below
int256 c = a * b;
require(c / a == b);
return c;
}
/**
* @dev Integer division of two unsigned integers truncating the quotient, reverts on division by zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
// Solidity only automatically asserts when dividing by 0
require(b > 0);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Integer division of two signed integers truncating the quotient, reverts on division by zero.
*/
function div(int256 a, int256 b) internal pure returns (int256) {
require(b != 0); // Solidity only automatically asserts when dividing by 0
require(!(b == -1 && a == INT256_MIN)); // This is the only case of overflow
int256 c = a / b;
return c;
}
/**
* @dev Subtracts two unsigned integers, reverts on overflow (i.e. if subtrahend is greater than minuend).
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
require(b <= a);
uint256 c = a - b;
return c;
}
/**
* @dev Subtracts two signed integers, reverts on overflow.
*/
function sub(int256 a, int256 b) internal pure returns (int256) {
int256 c = a - b;
require((b >= 0 && c <= a) || (b < 0 && c > a));
return c;
}
/**
* @dev Adds two unsigned integers, reverts on overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a);
return c;
}
/**
* @dev Adds two signed integers, reverts on overflow.
*/
function add(int256 a, int256 b) internal pure returns (int256) {
int256 c = a + b;
require((b >= 0 && c >= a) || (b < 0 && c < a));
return c;
}
/**
* @dev Divides two unsigned integers and returns the remainder (unsigned integer modulo),
* reverts when dividing by zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
require(b != 0);
return a % b;
}
}
/// @title Interface for contracts conforming to ERC-721: Non-Fungible Tokens
interface ERC721 {
// Required methods
function totalSupply() external view returns (uint256 total);
function balanceOf(address _owner) external view returns (uint256 balance);
function ownerOf(uint256 _tokenId) external view returns (address owner);
function approve(address _to, uint256 _tokenId) external;
function transfer(address _to, uint256 _tokenId) external;
function transferFrom(address _from, address _to, uint256 _tokenId) external;
// Events
event Transfer(address from, address to, uint256 tokenId);
event Approval(address owner, address approved, uint256 tokenId);
// Optional
// function name() public view returns (string name);
// function symbol() public view returns (string symbol);
// function tokensOfOwner(address _owner) external view returns (uint256[] tokenIds);
// function tokenMetadata(uint256 _tokenId, string _preferredTransport) public view returns (string infoUrl);
// ERC-165 Compatibility (https://github.com/ethereum/EIPs/issues/165)
function supportsInterface(bytes4 _interfaceID) external view returns (bool);
}
/// @title SEKRETOOOO
contract GeneScienceInterface {
/// @dev simply a boolean to indicate this is the contract we expect to be
function isGeneScience() public pure returns (bool);
/// @dev given genes of pony 1 & 2, return a genetic combination - may have a random factor
/// @param genes1 genes of mom
/// @param genes2 genes of dad
/// @return the genes that are supposed to be passed down the child
function mixGenes(uint256 genes1, uint256 genes2, uint256 targetBlock) public returns (uint256);
// calculate the cooldown of child pony
function processCooldown(uint16 childGen, uint256 targetBlock) public returns (uint16);
// calculate the result for upgrading pony
function upgradePonyResult(uint8 unicornation, uint256 targetBlock) public returns (bool);
function setMatingSeason(bool _isMatingSeason) public returns (bool);
}
/// @title Interface for contracts conforming to ERC-20
interface ERC20 {
//core ERC20 functions
function transfer(address _to, uint _value) external returns (bool success);
function balanceOf(address who) external view returns (uint256);
function allowance(address owner, address spender) external view returns (uint256);
function transferFrom(address from, address to, uint256 value) external returns (bool success);
function transferPreSigned(bytes _signature, address _to, uint256 _value, uint256 _fee, uint256 _nonce) external returns (bool);
function recoverSigner(bytes _signature, address _to, uint256 _value, uint256 _fee, uint256 _nonce) external view returns (address);
}
/**
* @title Signature verifier
* @dev To verify C level actions
*/
contract SignatureVerifier {
function splitSignature(bytes sig)
internal
pure
returns (uint8, bytes32, bytes32)
{
require(sig.length == 65);
bytes32 r;
bytes32 s;
uint8 v;
assembly {
// first 32 bytes, after the length prefix
r := mload(add(sig, 32))
// second 32 bytes
s := mload(add(sig, 64))
// final byte (first byte of the next 32 bytes)
v := byte(0, mload(add(sig, 96)))
}
return (v, r, s);
}
function recover(bytes32 hash, bytes sig) public pure returns (address) {
bytes32 r;
bytes32 s;
uint8 v;
//Check the signature length
if (sig.length != 65) {
return (address(0));
}
// Divide the signature in r, s and v variables
(v, r, s) = splitSignature(sig);
// Version of signature should be 27 or 28, but 0 and 1 are also possible versions
if (v < 27) {
v += 27;
}
// If the version is correct return the signer address
if (v != 27 && v != 28) {
return (address(0));
} else {
bytes memory prefix = "\x19Ethereum Signed Message:\n32";
bytes32 prefixedHash = keccak256(abi.encodePacked(prefix, hash));
return ecrecover(prefixedHash, v, r, s);
}
}
}
/**
* @title A DEKLA token access control
* @author DEKLA (https://www.dekla.io)
* @dev The Dekla token has 3 C level address to manage.
* They can execute special actions but it need to be approved by another C level address.
*/
contract AccessControl is SignatureVerifier {
using SafeMath for uint256;
// C level address that can execute special actions.
address public ceoAddress;
address public cfoAddress;
address public cooAddress;
address public systemAddress;
uint256 public CLevelTxCount_ = 0;
mapping(address => uint256) nonces;
// @dev C level transaction must be approved with another C level address
modifier onlyCLevel() {
require(
msg.sender == cooAddress ||
msg.sender == ceoAddress ||
msg.sender == cfoAddress
);
_;
}
/// @dev Access modifier for CEO-only functionality
modifier onlyCEO() {
require(msg.sender == ceoAddress);
_;
}
/// @dev Access modifier for CFO-only functionality
modifier onlyCFO() {
require(msg.sender == cfoAddress);
_;
}
/// @dev Access modifier for COO-only functionality
modifier onlyCOO() {
require(msg.sender == cooAddress);
_;
}
// @dev return true if transaction already signed by a C Level address
// @param _message The string to be verify
function signedByCLevel(
bytes32 _message,
bytes _sig
)
internal
view
onlyCLevel
returns (bool)
{
address signer = recover(_message, _sig);
require(signer != msg.sender);
return (
signer == cooAddress ||
signer == ceoAddress ||
signer == cfoAddress
);
}
// @dev return true if transaction already signed by a C Level address
// @param _message The string to be verify
// @param _sig the signature from signing the _message with system key
function signedBySystem(
bytes32 _message,
bytes _sig
)
internal
view
returns (bool)
{
address signer = recover(_message, _sig);
require(signer != msg.sender);
return (
signer == systemAddress
);
}
/**
* @notice Hash (keccak256) of the payload used by setCEO
* @param _newCEO address The address of the new CEO
* @param _nonce uint256 setCEO transaction number.
*/
function getCEOHashing(address _newCEO, uint256 _nonce) public pure returns (bytes32) {
return keccak256(abi.encodePacked(bytes4(0x486A0E94), _newCEO, _nonce));
}
// @dev Assigns a new address to act as the CEO. The C level transaction, must verify.
// @param _newCEO The address of the new CEO
// @param _sig the signature from signing the _message with CEO key
function setCEO(
address _newCEO,
bytes _sig
) external onlyCLevel {
require(
_newCEO != address(0) &&
_newCEO != cfoAddress &&
_newCEO != cooAddress
);
bytes32 hashedTx = getCEOHashing(_newCEO, nonces[msg.sender]);
require(signedByCLevel(hashedTx, _sig));
nonces[msg.sender]++;
ceoAddress = _newCEO;
CLevelTxCount_++;
}
/**
* @notice Hash (keccak256) of the payload used by setCFO
* @param _newCFO address The address of the new CFO
* @param _nonce uint256 setCFO transaction number.
*/
function getCFOHashing(address _newCFO, uint256 _nonce) public pure returns (bytes32) {
return keccak256(abi.encodePacked(bytes4(0x486A0E95), _newCFO, _nonce));
}
// @dev Assigns a new address to act as the CFO. The C level transaction, must verify.
// @param _newCFO The address of the new CFO
function setCFO(
address _newCFO,
bytes _sig
) external onlyCLevel {
require(
_newCFO != address(0) &&
_newCFO != ceoAddress &&
_newCFO != cooAddress
);
bytes32 hashedTx = getCFOHashing(_newCFO, nonces[msg.sender]);
require(signedByCLevel(hashedTx, _sig));
nonces[msg.sender]++;
cfoAddress = _newCFO;
CLevelTxCount_++;
}
/**
* @notice Hash (keccak256) of the payload used by setCOO
* @param _newCOO address The address of the new COO
* @param _nonce uint256 setCO transaction number.
*/
function getCOOHashing(address _newCOO, uint256 _nonce) public pure returns (bytes32) {
return keccak256(abi.encodePacked(bytes4(0x486A0E96), _newCOO, _nonce));
}
// @dev Assigns a new address to act as the COO. The C level transaction, must verify.
// @param _newCOO The address of the new COO, _sig signature used to verify COO address
// @param _sig the signature from signing the _newCOO with 1 of the C-level key
function setCOO(
address _newCOO,
bytes _sig
) external onlyCLevel {
require(
_newCOO != address(0) &&
_newCOO != ceoAddress &&
_newCOO != cfoAddress
);
bytes32 hashedTx = getCOOHashing(_newCOO, nonces[msg.sender]);
require(signedByCLevel(hashedTx, _sig));
nonces[msg.sender]++;
cooAddress = _newCOO;
CLevelTxCount_++;
}
function getNonces(address _sender) public view returns (uint256) {
return nonces[_sender];
}
}
/// @title A facet of PonyCore that manages special access privileges.
contract PonyAccessControl is AccessControl {
/// @dev Emited when contract is upgraded - See README.md for updgrade plan
event ContractUpgrade(address newContract);
// @dev Keeps track whether the contract is paused. When that is true, most actions are blocked
bool public paused = false;
/// @dev Modifier to allow actions only when the contract IS NOT paused
modifier whenNotPaused() {
require(!paused);
_;
}
/// @dev Modifier to allow actions only when the contract IS paused
modifier whenPaused {
require(paused);
_;
}
/// @dev Called by any "C-level" role to pause the contract. Used only when
/// a bug or exploit is detected and we need to limit damage.
function pause() external onlyCLevel whenNotPaused {
paused = true;
}
/// @dev Unpauses the smart contract. Can only be called by the CEO, since
/// one reason we may pause the contract is when CFO or COO accounts are
/// compromised.
/// @notice This is public rather than external so it can be called by
/// derived contracts.
function unpause() public onlyCEO whenPaused {
// can't unpause if contract was upgraded
paused = false;
}
}
/// @dev See the PonyCore contract documentation to understand how the various contract facets are arranged.
contract PonyBase is PonyAccessControl {
/*** EVENTS ***/
/// @dev The Birth event is fired whenever a new pony comes into existence. This obviously
/// includes any time a pony is created through the giveBirth method, but it is also called
/// when a new gen0 pony is created.
event Birth(address owner, uint256 ponyId, uint256 matronId, uint256 sireId, uint256 genes);
/// @dev Transfer event as defined in current draft of ERC721. Emitted every time a pony
/// ownership is assigned, including births.
event Transfer(address from, address to, uint256 tokenId);
/*** DATA TYPES ***/
/// @dev The main Pony struct. Every pony in MyEtherPonies is represented by a copy
/// of this structure, so great care was taken to ensure that it fits neatly into
/// exactly two 256-bit words. Note that the order of the members in this structure
/// is important because of the byte-packing rules used by Ethereum.
/// Ref: http://solidity.readthedocs.io/en/develop/miscellaneous.html
struct Pony {
// The Pony's genetic code is packed into these 256-bits, the format is
// sooper-sekret! A pony's genes never change.
uint256 genes;
// The timestamp from the block when this pony came into existence.
uint64 birthTime;
// The minimum timestamp after which this pony can engage in breeding
// activities again. This same timestamp is used for the pregnancy
// timer (for matrons) as well as the siring cooldown.
uint64 cooldownEndBlock;
// The ID of the parents of this Pony, set to 0 for gen0 ponies.
// Note that using 32-bit unsigned integers limits us to a "mere"
// 4 billion ponies. This number might seem small until you realize
// that Ethereum currently has a limit of about 500 million
// transactions per year! So, this definitely won't be a problem
// for several years (even as Ethereum learns to scale).
uint32 matronId;
uint32 sireId;
// Set to the ID of the sire pony for matrons that are pregnant,
// zero otherwise. A non-zero value here is how we know a pony
// is pregnant. Used to retrieve the genetic material for the new
// pony when the birth transpires.
uint32 matingWithId;
// Set to the index in the cooldown array (see below) that represents
// the current cooldown duration for this Pony. This starts at zero
// for gen0 ponies, and is initialized to floor(generation/2) for others.
// Incremented by one for each successful breeding action, regardless
// of whether this ponies is acting as matron or sire.
uint16 cooldownIndex;
// The "generation number" of this pony. ponies minted by the EP contract
// for sale are called "gen0" and have a generation number of 0. The
// generation number of all other ponies is the larger of the two generation
// numbers of their parents, plus one.
// (i.e. max(matron.generation, sire.generation) + 1)
uint16 generation;
uint16 txCount;
uint8 unicornation;
}
/*** CONSTANTS ***/
/// @dev A lookup table indicating the cooldown duration after any successful
/// breeding action, called "pregnancy time" for matrons and "siring cooldown"
/// for sires. Designed such that the cooldown roughly doubles each time a pony
/// is bred, encouraging owners not to just keep breeding the same pony over
/// and over again. Caps out at one week (a pony can breed an unbounded number
/// of times, and the maximum cooldown is always seven days).
uint32[10] public cooldowns = [
uint32(1 minutes),
uint32(5 minutes),
uint32(30 minutes),
uint32(1 hours),
uint32(4 hours),
uint32(8 hours),
uint32(1 days),
uint32(2 days),
uint32(4 days),
uint32(7 days)
];
uint8[5] public incubators = [
uint8(5),
uint8(10),
uint8(15),
uint8(20),
uint8(25)
];
// An approximation of currently how many seconds are in between blocks.
uint256 public secondsPerBlock = 15;
/*** STORAGE ***/
/// @dev An array containing the Pony struct for all Ponies in existence. The ID
/// of each pony is actually an index into this array. Note that ID 0 is a genesispony,
/// the unPony, the mythical beast that is the parent of all gen0 ponies. A bizarre
/// creature that is both matron and sire... to itself! Has an invalid genetic code.
/// In other words, pony ID 0 is invalid... ;-)
Pony[] ponies;
/// @dev A mapping from ponies IDs to the address that owns them. All ponies have
/// some valid owner address, even gen0 ponies are created with a non-zero owner.
mapping(uint256 => address) public ponyIndexToOwner;
// @dev A mapping from owner address to count of tokens that address owns.
// Used internally inside balanceOf() to resolve ownership count.
mapping(address => uint256) ownershipTokenCount;
/// @dev A mapping from PonyIDs to an address that has been approved to call
/// transferFrom(). Each Pony can only have one approved address for transfer
/// at any time. A zero value means no approval is outstanding.
mapping(uint256 => address) public ponyIndexToApproved;
/// @dev A mapping from PonyIDs to an address that has been approved to use
/// this Pony for siring via breedWith(). Each Pony can only have one approved
/// address for siring at any time. A zero value means no approval is outstanding.
mapping(uint256 => address) public matingAllowedToAddress;
mapping(address => bool) public hasIncubator;
/// @dev The address of the ClockAuction contract that handles sales of Ponies. This
/// same contract handles both peer-to-peer sales as well as the gen0 sales which are
/// initiated every 15 minutes.
SaleClockAuction public saleAuction;
/// @dev The address of a custom ClockAuction subclassed contract that handles siring
/// auctions. Needs to be separate from saleAuction because the actions taken on success
/// after a sales and siring auction are quite different.
SiringClockAuction public siringAuction;
BiddingClockAuction public biddingAuction;
/// @dev Assigns ownership of a specific Pony to an address.
function _transfer(address _from, address _to, uint256 _tokenId) internal {
// Since the number of ponies is capped to 2^32 we can't overflow this
ownershipTokenCount[_to]++;
// transfer ownership
ponyIndexToOwner[_tokenId] = _to;
// When creating new ponies _from is 0x0, but we can't account that address.
if (_from != address(0)) {
ownershipTokenCount[_from]--;
// once the pony is transferred also clear sire allowances
delete matingAllowedToAddress[_tokenId];
// clear any previously approved ownership exchange
delete ponyIndexToApproved[_tokenId];
}
// Emit the transfer event.
emit Transfer(_from, _to, _tokenId);
}
/// @dev An internal method that creates a new Pony and stores it. This
/// method doesn't do any checking and should only be called when the
/// input data is known to be valid. Will generate both a Birth event
/// and a Transfer event.
/// @param _matronId The Pony ID of the matron of this pony (zero for gen0)
/// @param _sireId The Pony ID of the sire of this pony (zero for gen0)
/// @param _generation The generation number of this pony, must be computed by caller.
/// @param _genes The Pony's genetic code.
/// @param _owner The inital owner of this pony, must be non-zero (except for the unPony, ID 0)
function _createPony(
uint256 _matronId,
uint256 _sireId,
uint256 _generation,
uint256 _genes,
address _owner,
uint16 _cooldownIndex
)
internal
returns (uint)
{
// These requires are not strictly necessary, our calling code should make
// sure that these conditions are never broken. However! _createPony() is already
// an expensive call (for storage), and it doesn't hurt to be especially careful
// to ensure our data structures are always valid.
require(_matronId == uint256(uint32(_matronId)));
require(_sireId == uint256(uint32(_sireId)));
require(_generation == uint256(uint16(_generation)));
Pony memory _pony = Pony({
genes : _genes,
birthTime : uint64(now),
cooldownEndBlock : 0,
matronId : uint32(_matronId),
sireId : uint32(_sireId),
matingWithId : 0,
cooldownIndex : _cooldownIndex,
generation : uint16(_generation),
unicornation : 0,
txCount : 0
});
uint256 newPonyId = ponies.push(_pony) - 1;
require(newPonyId == uint256(uint32(newPonyId)));
// emit the birth event
emit Birth(
_owner,
newPonyId,
uint256(_pony.matronId),
uint256(_pony.sireId),
_pony.genes
);
// This will assign ownership, and also emit the Transfer event as
// per ERC721 draft
_transfer(0, _owner, newPonyId);
return newPonyId;
}
// Any C-level can fix how many seconds per blocks are currently observed.
function setSecondsPerBlock(uint256 secs) external onlyCLevel {
require(secs < cooldowns[0]);
secondsPerBlock = secs;
}
}
/// @title The facet of the EtherPonies core contract that manages ownership, ERC-721 (draft) compliant.
/// @author Dekla (https://www.dekla.io)
/// @dev Ref: https://github.com/ethereum/EIPs/issues/721
/// See the PonyCore contract documentation to understand how the various contract facets are arranged.
contract PonyOwnership is PonyBase, ERC721 {
/// @notice Name and symbol of the non fungible token, as defined in ERC721.
string public constant name = "EtherPonies";
string public constant symbol = "EP";
bytes4 constant InterfaceSignature_ERC165 =
bytes4(keccak256('supportsInterface(bytes4)'));
bytes4 constant InterfaceSignature_ERC721 =
bytes4(keccak256('name()')) ^
bytes4(keccak256('symbol()')) ^
bytes4(keccak256('totalSupply()')) ^
bytes4(keccak256('balanceOf(address)')) ^
bytes4(keccak256('ownerOf(uint256)')) ^
bytes4(keccak256('approve(address,uint256)')) ^
bytes4(keccak256('transfer(address,uint256)')) ^
bytes4(keccak256('transferFrom(address,address,uint256)')) ^
bytes4(keccak256('tokensOfOwner(address)')) ^
bytes4(keccak256('tokenMetadata(uint256,string)'));
/// @notice Introspection interface as per ERC-165 (https://github.com/ethereum/EIPs/issues/165).
/// Returns true for any standardized interfaces implemented by this contract. We implement
/// ERC-165 (obviously!) and ERC-721.
function supportsInterface(bytes4 _interfaceID) external view returns (bool)
{
// DEBUG ONLY
//require((InterfaceSignature_ERC165 == 0x01ffc9a7) && (InterfaceSignature_ERC721 == 0x9a20483d));
return ((_interfaceID == InterfaceSignature_ERC165) || (_interfaceID == InterfaceSignature_ERC721));
}
// Internal utility functions: These functions all assume that their input arguments
// are valid. We leave it to public methods to sanitize their inputs and follow
// the required logic.
/// @dev Checks if a given address is the current owner of a particular Pony.
/// @param _claimant the address we are validating against.
/// @param _tokenId pony id, only valid when > 0
function _owns(address _claimant, uint256 _tokenId) internal view returns (bool) {
return ponyIndexToOwner[_tokenId] == _claimant;
}
/// @dev Checks if a given address currently has transferApproval for a particular Pony.
/// @param _claimant the address we are confirming pony is approved for.
/// @param _tokenId pony id, only valid when > 0
function _approvedFor(address _claimant, uint256 _tokenId) internal view returns (bool) {
return ponyIndexToApproved[_tokenId] == _claimant;
}
/// @dev Marks an address as being approved for transferFrom(), overwriting any previous
/// approval. Setting _approved to address(0) clears all transfer approval.
/// NOTE: _approve() does NOT send the Approval event. This is intentional because
/// _approve() and transferFrom() are used together for putting Ponies on auction, and
/// there is no value in spamming the log with Approval events in that case.
function _approve(uint256 _tokenId, address _approved) internal {
ponyIndexToApproved[_tokenId] = _approved;
}
/// @notice Returns the number of Ponies owned by a specific address.
/// @param _owner The owner address to check.
/// @dev Required for ERC-721 compliance
function balanceOf(address _owner) public view returns (uint256 count) {
return ownershipTokenCount[_owner];
}
/// @notice Transfers a Pony to another address. If transferring to a smart
/// contract be VERY CAREFUL to ensure that it is aware of ERC-721 (or
/// EtherPonies specifically) or your Pony may be lost forever. Seriously.
/// @param _to The address of the recipient, can be a user or contract.
/// @param _tokenId The ID of the Pony to transfer.
/// @dev Required for ERC-721 compliance.
function transfer(
address _to,
uint256 _tokenId
)
external
whenNotPaused
{
// Safety check to prevent against an unexpected 0x0 default.
require(_to != address(0));
// Disallow transfers to this contract to prevent accidental misuse.
// The contract should never own any ponies (except very briefly
// after a gen0 pony is created and before it goes on auction).
require(_to != address(this));
// You can only send your own pony.
require(_owns(msg.sender, _tokenId));
// Reassign ownership, clear pending approvals, emit Transfer event.
_transfer(msg.sender, _to, _tokenId);
}
/// @notice Grant another address the right to transfer a specific Pony via
/// transferFrom(). This is the preferred flow for transfering NFTs to contracts.
/// @param _to The address to be granted transfer approval. Pass address(0) to
/// clear all approvals.
/// @param _tokenId The ID of the Pony that can be transferred if this call succeeds.
/// @dev Required for ERC-721 compliance.
function approve(
address _to,
uint256 _tokenId
)
external
whenNotPaused
{
// Only an owner can grant transfer approval.
require(_owns(msg.sender, _tokenId));
// Register the approval (replacing any previous approval).
_approve(_tokenId, _to);
// Emit approval event.
emit Approval(msg.sender, _to, _tokenId);
}
/// @notice Transfer a Pony owned by another address, for which the calling address
/// has previously been granted transfer approval by the owner.
/// @param _from The address that owns the Pony to be transfered.
/// @param _to The address that should take ownership of the Pony. Can be any address,
/// including the caller.
/// @param _tokenId The ID of the Pony to be transferred.
/// @dev Required for ERC-721 compliance.
function transferFrom(
address _from,
address _to,
uint256 _tokenId
)
external
whenNotPaused
{
// Safety check to prevent against an unexpected 0x0 default.
require(_to != address(0));
// Disallow transfers to this contract to prevent accidental misuse.
// The contract should never own any Ponies (except very briefly
// after a gen0 pony is created and before it goes on auction).
require(_to != address(this));
// Check for approval and valid ownership
require(_approvedFor(msg.sender, _tokenId));
require(_owns(_from, _tokenId));
// Reassign ownership (also clears pending approvals and emits Transfer event).
_transfer(_from, _to, _tokenId);
}
/// @notice Returns the total number of Ponies currently in existence.
/// @dev Required for ERC-721 compliance.
function totalSupply() public view returns (uint) {
return ponies.length - 1;
}
/// @notice Returns the address currently assigned ownership of a given Pony.
/// @dev Required for ERC-721 compliance.
function ownerOf(uint256 _tokenId)
external
view
returns (address owner)
{
owner = ponyIndexToOwner[_tokenId];
}
/// @notice Returns a list of all Pony IDs assigned to an address.
/// @param _owner The owner whose Ponies we are interested in.
/// @dev This method MUST NEVER be called by smart contract code. First, it's fairly
/// expensive (it walks the entire Pony array looking for ponies belonging to owner),
/// but it also returns a dynamic array, which is only supported for web3 calls, and
/// not contract-to-contract calls.
function tokensOfOwner(address _owner) external view returns (uint256[] ownerTokens) {
uint256 tokenCount = balanceOf(_owner);
if (tokenCount == 0) {
// Return an empty array
return new uint256[](0);
} else {
uint256[] memory result = new uint256[](tokenCount);
uint256 totalPonies = totalSupply();
uint256 resultIndex = 0;
// We count on the fact that all ponies have IDs starting at 1 and increasing
// sequentially up to the totalPony count.
uint256 ponyId;
for (ponyId = 1; ponyId <= totalPonies; ponyId++) {
if (ponyIndexToOwner[ponyId] == _owner) {
result[resultIndex] = ponyId;
resultIndex++;
}
}
return result;
}
}
function transferPreSignedHashing(
address _token,
address _to,
uint256 _id,
uint256 _nonce
)
public
pure
returns (bytes32)
{
return keccak256(abi.encodePacked(bytes4(0x486A0E97), _token, _to, _id, _nonce));
}
function transferPreSigned(
bytes _signature,
address _to,
uint256 _id,
uint256 _nonce
)
public
{
require(_to != address(0));
// require(signatures[_signature] == false);
bytes32 hashedTx = transferPreSignedHashing(address(this), _to, _id, _nonce);
address from = recover(hashedTx, _signature);
require(from != address(0));
require(_to != address(this));
// You can only send your own pony.
require(_owns(from, _id));
nonces[from]++;
// Reassign ownership, clear pending approvals, emit Transfer event.
_transfer(from, _to, _id);
}
function approvePreSignedHashing(
address _token,
address _spender,
uint256 _tokenId,
uint256 _nonce
)
public
pure
returns (bytes32)
{
return keccak256(abi.encodePacked(_token, _spender, _tokenId, _nonce));
}
function approvePreSigned(
bytes _signature,
address _spender,
uint256 _tokenId,
uint256 _nonce
)
public
returns (bool)
{
require(_spender != address(0));
// require(signatures[_signature] == false);
bytes32 hashedTx = approvePreSignedHashing(address(this), _spender, _tokenId, _nonce);
address from = recover(hashedTx, _signature);
require(from != address(0));
// Only an owner can grant transfer approval.
require(_owns(from, _tokenId));
nonces[from]++;
// Register the approval (replacing any previous approval).
_approve(_tokenId, _spender);
// Emit approval event.
emit Approval(from, _spender, _tokenId);
return true;
}
}
/// @title A facet of PonyCore that manages Pony siring, gestation, and birth.
/// @author Dekla (https://www.dekla.io)
/// @dev See the PonyCore contract documentation to understand how the various contract facets are arranged.
contract PonyBreeding is PonyOwnership {
/// @dev The Pregnant event is fired when two ponies successfully breed and the pregnancy
/// timer begins for the matron.
event Pregnant(address owner, uint256 matronId, uint256 sireId, uint256 cooldownEndBlock);
/// @notice The minimum payment required to use breedWithAuto(). This fee goes towards
/// the gas cost paid by whatever calls giveBirth(), and can be dynamically updated by
/// the COO role as the gas price changes.
uint256 public autoBirthFee = 2 finney;
// Keeps track of number of pregnant Ponies.
uint256 public pregnantPonies;
/// @dev The address of the sibling contract that is used to implement the sooper-sekret
/// genetic combination algorithm.
GeneScienceInterface public geneScience;
/// @dev Update the address of the genetic contract, can only be called by the CEO.
/// @param _address An address of a GeneScience contract instance to be used from this point forward.
function setGeneScienceAddress(address _address) external onlyCEO {
GeneScienceInterface candidateContract = GeneScienceInterface(_address);
// NOTE: verify that a contract is what we expect - https://github.com/Lunyr/crowdsale-contracts/blob/cfadd15986c30521d8ba7d5b6f57b4fefcc7ac38/contracts/LunyrToken.sol#L117
require(candidateContract.isGeneScience());
// Set the new contract address
geneScience = candidateContract;
}
/// @dev Checks that a given pony is able to breed. Requires that the
/// current cooldown is finished (for sires) and also checks that there is
/// no pending pregnancy.
function _isReadyToMate(Pony _pon) internal view returns (bool) {
// In addition to checking the cooldownEndBlock, we also need to check to see if
// the pony has a pending birth; there can be some period of time between the end
// of the pregnacy timer and the birth event.
return (_pon.matingWithId == 0) && (_pon.cooldownEndBlock <= uint64(block.number));
}
/// @dev Check if a sire has authorized breeding with this matron. True if both sire
/// and matron have the same owner, or if the sire has given siring permission to
/// the matron's owner (via approveSiring()).
function _isMatingPermitted(uint256 _sireId, uint256 _matronId) internal view returns (bool) {
address matronOwner = ponyIndexToOwner[_matronId];
address sireOwner = ponyIndexToOwner[_sireId];
// Siring is okay if they have same owner, or if the matron's owner was given
// permission to breed with this sire.
return (matronOwner == sireOwner || matingAllowedToAddress[_sireId] == matronOwner);
}
/// @dev Set the cooldownEndTime for the given Pony, based on its current cooldownIndex.
/// Also increments the cooldownIndex (unless it has hit the cap).
/// @param _pony A reference to the Pony in storage which needs its timer started.
function _triggerCooldown(Pony storage _pony) internal {
// Compute an estimation of the cooldown time in blocks (based on current cooldownIndex).
_pony.cooldownEndBlock = uint64((cooldowns[_pony.cooldownIndex] / secondsPerBlock) + block.number);
// Increment the breeding count, clamping it at 13, which is the length of the
// cooldowns array. We could check the array size dynamically, but hard-coding
// this as a constant saves gas. Yay, Solidity!
if (_pony.cooldownIndex < 13) {
_pony.cooldownIndex += 1;
}
}
function _triggerPregnant(Pony storage _pony, uint8 _incubator) internal {
// Compute an estimation of the cooldown time in blocks (based on current cooldownIndex).
if (_incubator > 0) {
uint64 initialCooldown = uint64(cooldowns[_pony.cooldownIndex] / secondsPerBlock);
_pony.cooldownEndBlock = uint64((initialCooldown - (initialCooldown * incubators[_incubator] / 100)) + block.number);
} else {
_pony.cooldownEndBlock = uint64((cooldowns[_pony.cooldownIndex] / secondsPerBlock) + block.number);
}
// Increment the breeding count, clamping it at 13, which is the length of the
// cooldowns array. We could check the array size dynamically, but hard-coding
// this as a constant saves gas. Yay, Solidity!
if (_pony.cooldownIndex < 13) {
_pony.cooldownIndex += 1;
}
}
/// @notice Grants approval to another user to sire with one of your Ponies.
/// @param _addr The address that will be able to sire with your Pony. Set to
/// address(0) to clear all siring approvals for this Pony.
/// @param _sireId A Pony that you own that _addr will now be able to sire with.
function approveSiring(address _addr, uint256 _sireId)
external
whenNotPaused
{
require(_owns(msg.sender, _sireId));
matingAllowedToAddress[_sireId] = _addr;
}
/// @dev Updates the minimum payment required for calling giveBirthAuto(). Can only
/// be called by the COO address. (This fee is used to offset the gas cost incurred
/// by the autobirth daemon).
function setAutoBirthFee(uint256 val) external onlyCOO {
autoBirthFee = val;
}
/// @dev Checks to see if a given Pony is pregnant and (if so) if the gestation
/// period has passed.
function _isReadyToGiveBirth(Pony _matron) private view returns (bool) {
return (_matron.matingWithId != 0) && (_matron.cooldownEndBlock <= uint64(block.number));
}
/// @notice Checks that a given pony is able to breed (i.e. it is not pregnant or
/// in the middle of a siring cooldown).
/// @param _ponyId reference the id of the pony, any user can inquire about it
function isReadyToMate(uint256 _ponyId)
public
view
returns (bool)
{
require(_ponyId > 0);
Pony storage pon = ponies[_ponyId];
return _isReadyToMate(pon);
}
/// @dev Checks whether a Pony is currently pregnant.
/// @param _ponyId reference the id of the pony, any user can inquire about it
function isPregnant(uint256 _ponyId)
public
view
returns (bool)
{
require(_ponyId > 0);
// A Pony is pregnant if and only if this field is set
return ponies[_ponyId].matingWithId != 0;
}
/// @dev Internal check to see if a given sire and matron are a valid mating pair. DOES NOT
/// check ownership permissions (that is up to the caller).
/// @param _matron A reference to the Pony struct of the potential matron.
/// @param _matronId The matron's ID.
/// @param _sire A reference to the Pony struct of the potential sire.
/// @param _sireId The sire's ID
function _isValidMatingPair(
Pony storage _matron,
uint256 _matronId,
Pony storage _sire,
uint256 _sireId
)
private
view
returns (bool)
{
// A Pony can't breed with itself!
if (_matronId == _sireId) {
return false;
}
// Ponies can't breed with their parents.
if (_matron.matronId == _sireId || _matron.sireId == _sireId) {
return false;
}
if (_sire.matronId == _matronId || _sire.sireId == _matronId) {
return false;
}
// We can short circuit the sibling check (below) if either pony is
// gen zero (has a matron ID of zero).
if (_sire.matronId == 0 || _matron.matronId == 0) {
return true;
}
// Ponies can't breed with full or half siblings.
if (_sire.matronId == _matron.matronId || _sire.matronId == _matron.sireId) {
return false;
}
if (_sire.sireId == _matron.matronId || _sire.sireId == _matron.sireId) {
return false;
}
// Everything seems cool! Let's get DTF.
return true;
}
/// @dev Internal check to see if a given sire and matron are a valid mating pair for
/// breeding via auction (i.e. skips ownership and siring approval checks).
function canMateWithViaAuction(uint256 _matronId, uint256 _sireId)
public
view
returns (bool)
{
Pony storage matron = ponies[_matronId];
Pony storage sire = ponies[_sireId];
return _isValidMatingPair(matron, _matronId, sire, _sireId);
}
/// @notice Checks to see if two ponies can breed together, including checks for
/// ownership and siring approvals. Does NOT check that both ponies are ready for
/// breeding (i.e. breedWith could still fail until the cooldowns are finished).
/// TODO: Shouldn't this check pregnancy and cooldowns?!?
/// @param _matronId The ID of the proposed matron.
/// @param _sireId The ID of the proposed sire.
function canMateWith(uint256 _matronId, uint256 _sireId)
external
view
returns (bool)
{
require(_matronId > 0);
require(_sireId > 0);
Pony storage matron = ponies[_matronId];
Pony storage sire = ponies[_sireId];
return _isValidMatingPair(matron, _matronId, sire, _sireId) &&
_isMatingPermitted(_sireId, _matronId);
}
/// @dev Internal utility function to initiate breeding, assumes that all breeding
/// requirements have been checked.
function _mateWith(uint256 _matronId, uint256 _sireId, uint8 _incubator) internal {
// Grab a reference to the Ponies from storage.
Pony storage sire = ponies[_sireId];
Pony storage matron = ponies[_matronId];
// Mark the matron as pregnant, keeping track of who the sire is.
matron.matingWithId = uint32(_sireId);
// Trigger the cooldown for both parents.
_triggerCooldown(sire);
_triggerPregnant(matron, _incubator);
// Clear siring permission for both parents. This may not be strictly necessary
// but it's likely to avoid confusion!
delete matingAllowedToAddress[_matronId];
delete matingAllowedToAddress[_sireId];
// Every time a Pony gets pregnant, counter is incremented.
pregnantPonies++;
// Emit the pregnancy event.
emit Pregnant(ponyIndexToOwner[_matronId], _matronId, _sireId, matron.cooldownEndBlock);
}
function getIncubatorHashing(
address _sender,
uint8 _incubator,
uint256 txCount
)
public
pure
returns (bytes32)
{
return keccak256(abi.encodePacked(bytes4(0x486A0E98), _sender, _incubator, txCount));
}
/// @notice Breed a Pony you own (as matron) with a sire that you own, or for which you
/// have previously been given Siring approval. Will either make your pony pregnant, or will
/// fail entirely. Requires a pre-payment of the fee given out to the first caller of giveBirth()
/// @param _matronId The ID of the Pony acting as matron (will end up pregnant if successful)
/// @param _sireId The ID of the Pony acting as sire (will begin its siring cooldown if successful)
function mateWithAuto(uint256 _matronId, uint256 _sireId, uint8 _incubator, bytes _sig)
external
payable
whenNotPaused
{
// Checks for payment.
require(msg.value >= autoBirthFee);
// Caller must own the matron.
require(_owns(msg.sender, _matronId));
require(_isMatingPermitted(_sireId, _matronId));
// Grab a reference to the potential matron
Pony storage matron = ponies[_matronId];
// Make sure matron isn't pregnant, or in the middle of a siring cooldown
require(_isReadyToMate(matron));
// Grab a reference to the potential sire
Pony storage sire = ponies[_sireId];
// Make sure sire isn't pregnant, or in the middle of a siring cooldown
require(_isReadyToMate(sire));
// Test that these ponies are a valid mating pair.
require(
_isValidMatingPair(matron, _matronId, sire, _sireId)
);
if (_incubator == 0 && hasIncubator[msg.sender]) {
_mateWith(_matronId, _sireId, _incubator);
} else {
bytes32 hashedTx = getIncubatorHashing(msg.sender, _incubator, nonces[msg.sender]);
require(signedBySystem(hashedTx, _sig));
nonces[msg.sender]++;
// All checks passed, Pony gets pregnant!
if (!hasIncubator[msg.sender]) {
hasIncubator[msg.sender] = true;
}
_mateWith(_matronId, _sireId, _incubator);
}
}
/// @notice Have a pregnant Pony give birth!
/// @param _matronId A Pony ready to give birth.
/// @return The Pony ID of the new pony.
/// @dev Looks at a given Pony and, if pregnant and if the gestation period has passed,
/// combines the genes of the two parents to create a new pony. The new Pony is assigned
/// to the current owner of the matron. Upon successful completion, both the matron and the
/// new pony will be ready to breed again. Note that anyone can call this function (if they
/// are willing to pay the gas!), but the new pony always goes to the mother's owner.
function giveBirth(uint256 _matronId)
external
whenNotPaused
returns (uint256)
{
// Grab a reference to the matron in storage.
Pony storage matron = ponies[_matronId];
// Check that the matron is a valid pony.
require(matron.birthTime != 0);
// Check that the matron is pregnant, and that its time has come!
require(_isReadyToGiveBirth(matron));
// Grab a reference to the sire in storage.
uint256 sireId = matron.matingWithId;
Pony storage sire = ponies[sireId];
// Determine the higher generation number of the two parents
uint16 parentGen = matron.generation;
if (sire.generation > matron.generation) {
parentGen = sire.generation;
}
// Call the sooper-sekret gene mixing operation.
uint256 childGenes = geneScience.mixGenes(matron.genes, sire.genes, matron.cooldownEndBlock - 1);
// New Pony starts with the same cooldown as parent gen/20
uint16 cooldownIndex = geneScience.processCooldown(parentGen + 1, block.number);
if (cooldownIndex > 13) {
cooldownIndex = 13;
}
// Make the new pony!
address owner = ponyIndexToOwner[_matronId];
uint256 ponyId = _createPony(_matronId, matron.matingWithId, parentGen + 1, childGenes, owner, cooldownIndex);
// Clear the reference to sire from the matron (REQUIRED! Having siringWithId
// set is what marks a matron as being pregnant.)
delete matron.matingWithId;
// Every time a Pony gives birth counter is decremented.
pregnantPonies--;
// Send the balance fee to the person who made birth happen.
msg.sender.transfer(autoBirthFee);
// return the new pony's ID
return ponyId;
}
function setMatingSeason(bool _isMatingSeason) external onlyCLevel {
geneScience.setMatingSeason(_isMatingSeason);
}
}
/// @title Auction Core
/// @dev Contains models, variables, and internal methods for the auction.
/// @notice We omit a fallback function to prevent accidental sends to this contract.
contract ClockAuctionBase {
// Represents an auction on an NFT
struct Auction {
// Current owner of NFT
address seller;
uint256 price;
bool allowPayDekla;
}
// Reference to contract tracking NFT ownership
ERC721 public nonFungibleContract;
ERC20 public tokens;
// Cut owner takes on each auction, measured in basis points (1/100 of a percent).
// Values 0-10,000 map to 0%-100%
uint256 public ownerCut = 500;
// Map from token ID to their corresponding auction.
mapping(uint256 => Auction) tokenIdToAuction;
event AuctionCreated(uint256 tokenId);
event AuctionSuccessful(uint256 tokenId, uint256 totalPrice, address winner);
event AuctionCancelled(uint256 tokenId);
/// @dev Returns true if the claimant owns the token.
/// @param _claimant - Address claiming to own the token.
/// @param _tokenId - ID of token whose ownership to verify.
function _owns(address _claimant, uint256 _tokenId) internal view returns (bool) {
return (nonFungibleContract.ownerOf(_tokenId) == _claimant);
}
/// @dev Escrows the NFT, assigning ownership to this contract.
/// Throws if the escrow fails.
/// @param _owner - Current owner address of token to escrow.
/// @param _tokenId - ID of token whose approval to verify.
function _escrow(address _owner, uint256 _tokenId) internal {
// it will throw if transfer fails
nonFungibleContract.transferFrom(_owner, this, _tokenId);
}
/// @dev Transfers an NFT owned by this contract to another address.
/// Returns true if the transfer succeeds.
/// @param _receiver - Address to transfer NFT to.
/// @param _tokenId - ID of token to transfer.
function _transfer(address _receiver, uint256 _tokenId) internal {
// it will throw if transfer fails
nonFungibleContract.transfer(_receiver, _tokenId);
}
/// @dev Adds an auction to the list of open auctions. Also fires the
/// AuctionCreated event.
/// @param _tokenId The ID of the token to be put on auction.
/// @param _auction Auction to add.
function _addAuction(uint256 _tokenId, Auction _auction) internal {
tokenIdToAuction[_tokenId] = _auction;
emit AuctionCreated(
uint256(_tokenId)
);
}
/// @dev Computes the price and transfers winnings.
/// Does NOT transfer ownership of token.
function _bidEth(uint256 _tokenId, uint256 _bidAmount)
internal
returns (uint256)
{
// Get a reference to the auction struct
Auction storage auction = tokenIdToAuction[_tokenId];
require(!auction.allowPayDekla);
// Explicitly check that this auction is currently live.
// (Because of how Ethereum mappings work, we can't just count
// on the lookup above failing. An invalid _tokenId will just
// return an auction object that is all zeros.)
require(_isOnAuction(auction));
// Check that the bid is greater than or equal to the current price
uint256 price = auction.price;
require(_bidAmount >= price);
// Grab a reference to the seller before the auction struct
// gets deleted.
address seller = auction.seller;
// The bid is good! Remove the auction before sending the fees
// to the sender so we can't have a reentrancy attack.
_removeAuction(_tokenId);
// Transfer proceeds to seller (if there are any!)
if (price > 0) {
// Calculate the auctioneer's cut.
// (NOTE: _computeCut() is guaranteed to return a
// value <= price, so this subtraction can't go negative.)
uint256 auctioneerCut = _computeCut(price);
uint256 sellerProceeds = price - auctioneerCut;
seller.transfer(sellerProceeds);
}
// Tell the world!
emit AuctionSuccessful(_tokenId, price, msg.sender);
return price;
}
/// @dev Computes the price and transfers winnings.
/// Does NOT transfer ownership of token.
function _bidDkl(uint256 _tokenId, uint256 _bidAmount)
internal
returns (uint256)
{
// Get a reference to the auction struct
Auction storage auction = tokenIdToAuction[_tokenId];
require(auction.allowPayDekla);
// Explicitly check that this auction is currently live.
// (Because of how Ethereum mappings work, we can't just count
// on the lookup above failing. An invalid _tokenId will just
// return an auction object that is all zeros.)
require(_isOnAuction(auction));
// Check that the bid is greater than or equal to the current price
uint256 price = auction.price;
require(_bidAmount >= price);
// Grab a reference to the seller before the auction struct
// gets deleted.
address seller = auction.seller;
// The bid is good! Remove the auction before sending the fees
// to the sender so we can't have a reentrancy attack.
_removeAuction(_tokenId);
// Transfer proceeds to seller (if there are any!)
if (price > 0) {
// Calculate the auctioneer's cut.
// (NOTE: _computeCut() is guaranteed to return a
// value <= price, so this subtraction can't go negative.)
uint256 auctioneerCut = _computeCut(price);
uint256 sellerProceeds = price - auctioneerCut;
tokens.transfer(seller, sellerProceeds);
}
// Tell the world!
emit AuctionSuccessful(_tokenId, price, msg.sender);
return price;
}
/// @dev Cancels an auction unconditionally.
function _cancelAuction(uint256 _tokenId, address _seller) internal {
_removeAuction(_tokenId);
_transfer(_seller, _tokenId);
emit AuctionCancelled(_tokenId);
}
/// @dev Returns true if the NFT is on auction.
/// @param _auction - Auction to check.
function _isOnAuction(Auction storage _auction) internal view returns (bool) {
return (_auction.price > 0);
}
/// @dev Removes an auction from the list of open auctions.
/// @param _tokenId - ID of NFT on auction.
function _removeAuction(uint256 _tokenId) internal {
delete tokenIdToAuction[_tokenId];
}
/// @dev Computes owner's cut of a sale.
/// @param _price - Sale price of NFT.
function _computeCut(uint256 _price) internal view returns (uint256) {
// NOTE: We don't use SafeMath (or similar) in this function because
// all of our entry functions carefully cap the maximum values for
// currency (at 128-bits), and ownerCut <= 10000 (see the require()
// statement in the ClockAuction constructor). The result of this
// function is always guaranteed to be <= _price.
return _price * ownerCut / 10000;
}
}
/**
* @title Pausable
* @dev Base contract which allows children to implement an emergency stop mechanism.
*/
contract Pausable is AccessControl{
event Pause();
event Unpause();
bool public paused = false;
/**
* @dev modifier to allow actions only when the contract IS paused
*/
modifier whenNotPaused() {
require(!paused);
_;
}
/**
* @dev modifier to allow actions only when the contract IS NOT paused
*/
modifier whenPaused {
require(paused);
_;
}
/**
* @dev called by the owner to pause, triggers stopped state
*/
function pause() onlyCEO whenNotPaused public returns (bool) {
paused = true;
emit Pause();
return true;
}
/**
* @dev called by the owner to unpause, returns to normal state
*/
function unpause() onlyCEO whenPaused public returns (bool) {
paused = false;
emit Unpause();
return true;
}
}
/// @title Clock auction for non-fungible tokens.
/// @notice We omit a fallback function to prevent accidental sends to this contract.
contract ClockAuction is Pausable, ClockAuctionBase {
/// @dev The ERC-165 interface signature for ERC-721.
/// Ref: https://github.com/ethereum/EIPs/issues/165
/// Ref: https://github.com/ethereum/EIPs/issues/721
bytes4 constant InterfaceSignature_ERC721 = bytes4(0x9a20483d);
/// @dev Constructor creates a reference to the NFT ownership contract
/// and verifies the owner cut is in the valid range.
/// @param _nftAddress - address of a deployed contract implementing
/// the Nonfungible Interface.
constructor(address _nftAddress, address _tokenAddress) public {
ERC721 candidateContract = ERC721(_nftAddress);
require(candidateContract.supportsInterface(InterfaceSignature_ERC721));
tokens = ERC20(_tokenAddress);
nonFungibleContract = candidateContract;
}
/// @dev Cancels an auction that hasn't been won yet.
/// Returns the NFT to original owner.
/// @notice This is a state-modifying function that can
/// be called while the contract is paused.
/// @param _tokenId - ID of token on auction
function cancelAuction(uint256 _tokenId)
external
{
Auction storage auction = tokenIdToAuction[_tokenId];
address seller = auction.seller;
require(msg.sender == seller);
_cancelAuction(_tokenId, seller);
}
/// @dev Cancels an auction when the contract is paused.
/// Only the owner may do this, and NFTs are returned to
/// the seller. This should only be used in emergencies.
/// @param _tokenId - ID of the NFT on auction to cancel.
function cancelAuctionWhenPaused(uint256 _tokenId)
whenPaused
onlyCEO
external
{
Auction storage auction = tokenIdToAuction[_tokenId];
_cancelAuction(_tokenId, auction.seller);
}
/// @dev Returns auction info for an NFT on auction.
/// @param _tokenId - ID of NFT on auction.
function getAuction(uint256 _tokenId)
external
view
returns
(
address seller,
uint256 price,
bool allowPayDekla
) {
Auction storage auction = tokenIdToAuction[_tokenId];
return (
auction.seller,
auction.price,
auction.allowPayDekla
);
}
/// @dev Returns the current price of an auction.
/// @param _tokenId - ID of the token price we are checking.
function getCurrentPrice(uint256 _tokenId)
external
view
returns (uint256)
{
Auction storage auction = tokenIdToAuction[_tokenId];
require(_isOnAuction(auction));
return auction.price;
}
}
/// @title Reverse auction modified for siring
/// @notice We omit a fallback function to prevent accidental sends to this contract.
contract SiringClockAuction is ClockAuction {
// @dev Sanity check that allows us to ensure that we are pointing to the
// right auction in our setSiringAuctionAddress() call.
bool public isSiringClockAuction = true;
uint256 public prizeCut = 100;
uint256 public tokenDiscount = 100;
address prizeAddress;
// Delegate constructor
constructor(address _nftAddr, address _tokenAddress, address _prizeAddress) public
ClockAuction(_nftAddr, _tokenAddress) {
prizeAddress = _prizeAddress;
}
/// @dev Creates and begins a new auction. Since this function is wrapped,
/// require sender to be PonyCore contract.
/// @param _tokenId - ID of token to auction, sender must be owner.
/// @param _seller - Seller, if not the message sender
function createEthAuction(
uint256 _tokenId,
address _seller,
uint256 _price
)
external
{
require(msg.sender == address(nonFungibleContract));
require(_price > 0);
_escrow(_seller, _tokenId);
Auction memory auction = Auction(
_seller,
_price,
false
);
_addAuction(_tokenId, auction);
}
/// @dev Creates and begins a new auction. Since this function is wrapped,
/// require sender to be PonyCore contract.
/// @param _tokenId - ID of token to auction, sender must be owner.
/// @param _seller - Seller, if not the message sender
function createDklAuction(
uint256 _tokenId,
address _seller,
uint256 _price
)
external
{
require(msg.sender == address(nonFungibleContract));
require(_price > 0);
_escrow(_seller, _tokenId);
Auction memory auction = Auction(
_seller,
_price,
true
);
_addAuction(_tokenId, auction);
}
/// @dev Places a bid for siring. Requires the sender
/// is the PonyCore contract because all bid methods
/// should be wrapped. Also returns the pony to the
/// seller rather than the winner.
function bidEth(uint256 _tokenId)
external
payable
{
require(msg.sender == address(nonFungibleContract));
address seller = tokenIdToAuction[_tokenId].seller;
// _bid checks that token ID is valid and will throw if bid fails
_bidEth(_tokenId, msg.value);
// We transfer the pony back to the seller, the winner will get
// the offspring
uint256 prizeAmount = (msg.value * prizeCut) / 10000;
prizeAddress.transfer(prizeAmount);
_transfer(seller, _tokenId);
}
function bidDkl(uint256 _tokenId,
uint256 _price,
uint256 _fee,
bytes _signature,
uint256 _nonce)
external
whenNotPaused
{
address seller = tokenIdToAuction[_tokenId].seller;
tokens.transferPreSigned(_signature, address(this), _price, _fee, _nonce);
// _bid will throw if the bid or funds transfer fails
_bidDkl(_tokenId, _price);
tokens.transfer(msg.sender, _fee);
address spender = tokens.recoverSigner(_signature, address(this), _price, _fee, _nonce);
uint256 discountAmount = (_price * tokenDiscount) / 10000;
uint256 prizeAmount = (_price * prizeCut) / 10000;
tokens.transfer(prizeAddress, prizeAmount);
tokens.transfer(spender, discountAmount);
_transfer(seller, _tokenId);
}
function setCut(uint256 _prizeCut, uint256 _tokenDiscount)
external
{
require(msg.sender == address(nonFungibleContract));
require(_prizeCut + _tokenDiscount < ownerCut);
prizeCut = _prizeCut;
tokenDiscount = _tokenDiscount;
}
/// @dev Remove all Ether from the contract, which is the owner's cuts
/// as well as any Ether sent directly to the contract address.
/// Always transfers to the NFT contract, but can be called either by
/// the owner or the NFT contract.
function withdrawBalance() external {
address nftAddress = address(nonFungibleContract);
require(
msg.sender == nftAddress
);
nftAddress.transfer(address(this).balance);
}
function withdrawDklBalance() external {
address nftAddress = address(nonFungibleContract);
require(
msg.sender == nftAddress
);
tokens.transfer(nftAddress, tokens.balanceOf(this));
}
}
/// @title Clock auction modified for sale of Ponies
/// @notice We omit a fallback function to prevent accidental sends to this contract.
contract SaleClockAuction is ClockAuction {
// @dev Sanity check that allows us to ensure that we are pointing to the
// right auction in our setSaleAuctionAddress() call.
bool public isSaleClockAuction = true;
uint256 public prizeCut = 100;
uint256 public tokenDiscount = 100;
address prizeAddress;
// Tracks last 5 sale price of gen0 Pony sales
uint256 public gen0SaleCount;
uint256[5] public lastGen0SalePrices;
// Delegate constructor
constructor(address _nftAddr, address _token, address _prizeAddress) public
ClockAuction(_nftAddr, _token) {
prizeAddress = _prizeAddress;
}
/// @dev Creates and begins a new auction.
/// @param _tokenId - ID of token to auction, sender must be owner.
/// @param _seller - Seller, if not the message sender
function createEthAuction(
uint256 _tokenId,
address _seller,
uint256 _price
)
external
{
require(msg.sender == address(nonFungibleContract));
_escrow(_seller, _tokenId);
Auction memory auction = Auction(
_seller,
_price,
false
);
_addAuction(_tokenId, auction);
}
/// @dev Creates and begins a new auction.
/// @param _tokenId - ID of token to auction, sender must be owner.
/// @param _seller - Seller, if not the message sender
function createDklAuction(
uint256 _tokenId,
address _seller,
uint256 _price
)
external
{
require(msg.sender == address(nonFungibleContract));
_escrow(_seller, _tokenId);
Auction memory auction = Auction(
_seller,
_price,
true
);
_addAuction(_tokenId, auction);
}
function bidEth(uint256 _tokenId)
external
payable
whenNotPaused
{
// _bid will throw if the bid or funds transfer fails
_bidEth(_tokenId, msg.value);
uint256 prizeAmount = (msg.value * prizeCut) / 10000;
prizeAddress.transfer(prizeAmount);
_transfer(msg.sender, _tokenId);
}
function bidDkl(uint256 _tokenId,
uint256 _price,
uint256 _fee,
bytes _signature,
uint256 _nonce)
external
whenNotPaused
{
address buyer = tokens.recoverSigner(_signature, address(this), _price, _fee, _nonce);
tokens.transferPreSigned(_signature, address(this), _price, _fee, _nonce);
// _bid will throw if the bid or funds transfer fails
_bidDkl(_tokenId, _price);
uint256 prizeAmount = (_price * prizeCut) / 10000;
uint256 discountAmount = (_price * tokenDiscount) / 10000;
tokens.transfer(buyer, discountAmount);
tokens.transfer(prizeAddress, prizeAmount);
_transfer(buyer, _tokenId);
}
function setCut(uint256 _prizeCut, uint256 _tokenDiscount)
external
{
require(msg.sender == address(nonFungibleContract));
require(_prizeCut + _tokenDiscount < ownerCut);
prizeCut = _prizeCut;
tokenDiscount = _tokenDiscount;
}
/// @dev Remove all Ether from the contract, which is the owner's cuts
/// as well as any Ether sent directly to the contract address.
/// Always transfers to the NFT contract, but can be called either by
/// the owner or the NFT contract.
function withdrawBalance() external {
address nftAddress = address(nonFungibleContract);
require(
msg.sender == nftAddress
);
nftAddress.transfer(address(this).balance);
}
function withdrawDklBalance() external {
address nftAddress = address(nonFungibleContract);
require(
msg.sender == nftAddress
);
tokens.transfer(nftAddress, tokens.balanceOf(this));
}
}
/// @title Handles creating auctions for sale and siring of Ponies.
/// This wrapper of ReverseAuction exists only so that users can create
/// auctions with only one transaction.
contract PonyAuction is PonyBreeding {
// @notice The auction contract variables are defined in PonyBase to allow
// us to refer to them in PonyOwnership to prevent accidental transfers.
// `saleAuction` refers to the auction for gen0 and p2p sale of Ponies.
// `siringAuction` refers to the auction for siring rights of Ponies.
/// @dev Sets the reference to the sale auction.
/// @param _address - Address of sale contract.
function setSaleAuctionAddress(address _address) external onlyCEO {
SaleClockAuction candidateContract = SaleClockAuction(_address);
// NOTE: verify that a contract is what we expect - https://github.com/Lunyr/crowdsale-contracts/blob/cfadd15986c30521d8ba7d5b6f57b4fefcc7ac38/contracts/LunyrToken.sol#L117
require(candidateContract.isSaleClockAuction());
// Set the new contract address
saleAuction = candidateContract;
}
/// @dev Sets the reference to the siring auction.
/// @param _address - Address of siring contract.
function setSiringAuctionAddress(address _address) external onlyCEO {
SiringClockAuction candidateContract = SiringClockAuction(_address);
// NOTE: verify that a contract is what we expect - https://github.com/Lunyr/crowdsale-contracts/blob/cfadd15986c30521d8ba7d5b6f57b4fefcc7ac38/contracts/LunyrToken.sol#L117
require(candidateContract.isSiringClockAuction());
// Set the new contract address
siringAuction = candidateContract;
}
/// @dev Sets the reference to the bidding auction.
/// @param _address - Address of bidding contract.
function setBiddingAuctionAddress(address _address) external onlyCEO {
BiddingClockAuction candidateContract = BiddingClockAuction(_address);
// NOTE: verify that a contract is what we expect - https://github.com/Lunyr/crowdsale-contracts/blob/cfadd15986c30521d8ba7d5b6f57b4fefcc7ac38/contracts/LunyrToken.sol#L117
require(candidateContract.isBiddingClockAuction());
// Set the new contract address
biddingAuction = candidateContract;
}
/// @dev Put a Pony up for auction.
/// Does some ownership trickery to create auctions in one tx.
function createEthSaleAuction(
uint256 _PonyId,
uint256 _price
)
external
whenNotPaused
{
// Auction contract checks input sizes
// If Pony is already on any auction, this will throw
// because it will be owned by the auction contract.
require(_owns(msg.sender, _PonyId));
// Ensure the Pony is not pregnant to prevent the auction
// contract accidentally receiving ownership of the child.
// NOTE: the Pony IS allowed to be in a cooldown.
require(!isPregnant(_PonyId));
_approve(_PonyId, saleAuction);
// Sale auction throws if inputs are invalid and clears
// transfer and sire approval after escrowing the Pony.
saleAuction.createEthAuction(
_PonyId,
msg.sender,
_price
);
}
/// @dev Put a Pony up for auction.
/// Does some ownership trickery to create auctions in one tx.
function delegateDklSaleAuction(
uint256 _tokenId,
uint256 _price,
bytes _ponySig,
uint256 _nonce
)
external
whenNotPaused
{
bytes32 hashedTx = approvePreSignedHashing(address(this), saleAuction, _tokenId, _nonce);
address from = recover(hashedTx, _ponySig);
// Auction contract checks input sizes
// If Pony is already on any auction, this will throw
// because it will be owned by the auction contract.
require(_owns(from, _tokenId));
// Ensure the Pony is not pregnant to prevent the auction
// contract accidentally receiving ownership of the child.
// NOTE: the Pony IS allowed to be in a cooldown.
require(!isPregnant(_tokenId));
approvePreSigned(_ponySig, saleAuction, _tokenId, _nonce);
// Sale auction throws if inputs are invalid and clears
// transfer and sire approval after escrowing the Pony.
saleAuction.createDklAuction(
_tokenId,
from,
_price
);
}
/// @dev Put a Pony up for auction.
/// Does some ownership trickery to create auctions in one tx.
function delegateDklSiringAuction(
uint256 _tokenId,
uint256 _price,
bytes _ponySig,
uint256 _nonce
)
external
whenNotPaused
{
bytes32 hashedTx = approvePreSignedHashing(address(this), siringAuction, _tokenId, _nonce);
address from = recover(hashedTx, _ponySig);
// Auction contract checks input sizes
// If Pony is already on any auction, this will throw
// because it will be owned by the auction contract.
require(_owns(from, _tokenId));
// Ensure the Pony is not pregnant to prevent the auction
// contract accidentally receiving ownership of the child.
// NOTE: the Pony IS allowed to be in a cooldown.
require(!isPregnant(_tokenId));
approvePreSigned(_ponySig, siringAuction, _tokenId, _nonce);
// Sale auction throws if inputs are invalid and clears
// transfer and sire approval after escrowing the Pony.
siringAuction.createDklAuction(
_tokenId,
from,
_price
);
}
/// @dev Put a Pony up for auction.
/// Does some ownership trickery to create auctions in one tx.
function delegateDklBidAuction(
uint256 _tokenId,
uint256 _price,
bytes _ponySig,
uint256 _nonce,
uint16 _durationIndex
)
external
whenNotPaused
{
bytes32 hashedTx = approvePreSignedHashing(address(this), biddingAuction, _tokenId, _nonce);
address from = recover(hashedTx, _ponySig);
// Auction contract checks input sizes
// If Pony is already on any auction, this will throw
// because it will be owned by the auction contract.
require(_owns(from, _tokenId));
// Ensure the Pony is not pregnant to prevent the auction
// contract accidentally receiving ownership of the child.
// NOTE: the Pony IS allowed to be in a cooldown.
require(!isPregnant(_tokenId));
approvePreSigned(_ponySig, biddingAuction, _tokenId, _nonce);
// Sale auction throws if inputs are invalid and clears
// transfer and sire approval after escrowing the Pony.
biddingAuction.createDklAuction(_tokenId, from, _durationIndex, _price);
}
/// @dev Put a Pony up for auction to be sire.
/// Performs checks to ensure the Pony can be sired, then
/// delegates to reverse auction.
function createEthSiringAuction(
uint256 _PonyId,
uint256 _price
)
external
whenNotPaused
{
// Auction contract checks input sizes
// If Pony is already on any auction, this will throw
// because it will be owned by the auction contract.
require(_owns(msg.sender, _PonyId));
require(isReadyToMate(_PonyId));
_approve(_PonyId, siringAuction);
// Siring auction throws if inputs are invalid and clears
// transfer and sire approval after escrowing the Pony.
siringAuction.createEthAuction(
_PonyId,
msg.sender,
_price
);
}
/// @dev Put a Pony up for auction.
/// Does some ownership trickery to create auctions in one tx.
function createDklSaleAuction(
uint256 _PonyId,
uint256 _price
)
external
whenNotPaused
{
// Auction contract checks input sizes
// If Pony is already on any auction, this will throw
// because it will be owned by the auction contract.
require(_owns(msg.sender, _PonyId));
// Ensure the Pony is not pregnant to prevent the auction
// contract accidentally receiving ownership of the child.
// NOTE: the Pony IS allowed to be in a cooldown.
require(!isPregnant(_PonyId));
_approve(_PonyId, saleAuction);
// Sale auction throws if inputs are invalid and clears
// transfer and sire approval after escrowing the Pony.
saleAuction.createDklAuction(
_PonyId,
msg.sender,
_price
);
}
/// @dev Put a Pony up for auction to be sire.
/// Performs checks to ensure the Pony can be sired, then
/// delegates to reverse auction.
function createDklSiringAuction(
uint256 _PonyId,
uint256 _price
)
external
whenNotPaused
{
// Auction contract checks input sizes
// If Pony is already on any auction, this will throw
// because it will be owned by the auction contract.
require(_owns(msg.sender, _PonyId));
require(isReadyToMate(_PonyId));
_approve(_PonyId, siringAuction);
// Siring auction throws if inputs are invalid and clears
// transfer and sire approval after escrowing the Pony.
siringAuction.createDklAuction(
_PonyId,
msg.sender,
_price
);
}
function createEthBidAuction(
uint256 _ponyId,
uint256 _price,
uint16 _durationIndex
) external whenNotPaused {
require(_owns(msg.sender, _ponyId));
_approve(_ponyId, biddingAuction);
biddingAuction.createETHAuction(_ponyId, msg.sender, _durationIndex, _price);
}
function createDeklaBidAuction(
uint256 _ponyId,
uint256 _price,
uint16 _durationIndex
) external whenNotPaused {
require(_owns(msg.sender, _ponyId));
_approve(_ponyId, biddingAuction);
biddingAuction.createDklAuction(_ponyId, msg.sender, _durationIndex, _price);
}
/// @dev Completes a siring auction by bidding.
/// Immediately breeds the winning matron with the sire on auction.
/// @param _sireId - ID of the sire on auction.
/// @param _matronId - ID of the matron owned by the bidder.
function bidOnEthSiringAuction(
uint256 _sireId,
uint256 _matronId,
uint8 _incubator,
bytes _sig
)
external
payable
whenNotPaused
{
// Auction contract checks input sizes
require(_owns(msg.sender, _matronId));
require(isReadyToMate(_matronId));
require(canMateWithViaAuction(_matronId, _sireId));
// Define the current price of the auction.
uint256 currentPrice = siringAuction.getCurrentPrice(_sireId);
require(msg.value >= currentPrice + autoBirthFee);
// Siring auction will throw if the bid fails.
siringAuction.bidEth.value(msg.value - autoBirthFee)(_sireId);
if (_incubator == 0 && hasIncubator[msg.sender]) {
_mateWith(_matronId, _sireId, _incubator);
} else {
bytes32 hashedTx = getIncubatorHashing(msg.sender, _incubator, nonces[msg.sender]);
require(signedBySystem(hashedTx, _sig));
nonces[msg.sender]++;
// All checks passed, Pony gets pregnant!
if (!hasIncubator[msg.sender]) {
hasIncubator[msg.sender] = true;
}
_mateWith(_matronId, _sireId, _incubator);
}
}
/// @dev Completes a siring auction by bidding.
/// Immediately breeds the winning matron with the sire on auction.
/// @param _sireId - ID of the sire on auction.
/// @param _matronId - ID of the matron owned by the bidder.
function bidOnDklSiringAuction(
uint256 _sireId,
uint256 _matronId,
uint8 _incubator,
bytes _incubatorSig,
uint256 _price,
uint256 _fee,
bytes _delegateSig,
uint256 _nonce
)
external
payable
whenNotPaused
{
// Auction contract checks input sizes
require(_owns(msg.sender, _matronId));
require(isReadyToMate(_matronId));
require(canMateWithViaAuction(_matronId, _sireId));
// Define the current price of the auction.
uint256 currentPrice = siringAuction.getCurrentPrice(_sireId);
require(msg.value >= autoBirthFee);
require(_price >= currentPrice);
// Siring auction will throw if the bid fails.
siringAuction.bidDkl(_sireId, _price, _fee, _delegateSig, _nonce);
if (_incubator == 0 && hasIncubator[msg.sender]) {
_mateWith(_matronId, _sireId, _incubator);
} else {
bytes32 hashedTx = getIncubatorHashing(msg.sender, _incubator, nonces[msg.sender]);
require(signedBySystem(hashedTx, _incubatorSig));
nonces[msg.sender]++;
// All checks passed, Pony gets pregnant!
if (!hasIncubator[msg.sender]) {
hasIncubator[msg.sender] = true;
}
_mateWith(_matronId, _sireId, _incubator);
}
}
/// @dev Transfers the balance of the sale auction contract
/// to the PonyCore contract. We use two-step withdrawal to
/// prevent two transfer calls in the auction bid function.
function withdrawAuctionBalances() external onlyCLevel {
saleAuction.withdrawBalance();
siringAuction.withdrawBalance();
biddingAuction.withdrawBalance();
}
function withdrawAuctionDklBalance() external onlyCLevel {
saleAuction.withdrawDklBalance();
siringAuction.withdrawDklBalance();
biddingAuction.withdrawDklBalance();
}
function setBiddingRate(uint256 _prizeCut, uint256 _tokenDiscount) external onlyCLevel {
biddingAuction.setCut(_prizeCut, _tokenDiscount);
}
function setSaleRate(uint256 _prizeCut, uint256 _tokenDiscount) external onlyCLevel {
saleAuction.setCut(_prizeCut, _tokenDiscount);
}
function setSiringRate(uint256 _prizeCut, uint256 _tokenDiscount) external onlyCLevel {
siringAuction.setCut(_prizeCut, _tokenDiscount);
}
}
/// @title Auction Core
/// @dev Contains models, variables, and internal methods for the auction.
/// @notice We omit a fallback function to prevent accidental sends to this contract.
contract BiddingAuctionBase {
// An approximation of currently how many seconds are in between blocks.
uint256 public secondsPerBlock = 15;
// Represents an auction on an NFT
struct Auction {
// Current owner of NFT
address seller;
// Duration (in seconds) of auction
uint16 durationIndex;
// Time when auction started
// NOTE: 0 if this auction has been concluded
uint64 startedAt;
uint64 auctionEndBlock;
// Price (in wei) at beginning of auction
uint256 startingPrice;
bool allowPayDekla;
}
uint32[4] public auctionDuration = [
//production
uint32(2 days),
uint32(3 days),
uint32(4 days),
uint32(5 days)
];
// Reference to contract tracking NFT ownership
ERC721 public nonFungibleContract;
uint256 public ownerCut = 500;
// Map from token ID to their corresponding auction.
mapping(uint256 => Auction) public tokenIdToAuction;
event AuctionCreated(uint256 tokenId);
event AuctionSuccessful(uint256 tokenId, uint256 totalPrice, address winner);
event AuctionCancelled(uint256 tokenId);
/// @dev Returns true if the claimant owns the token.
/// @param _claimant - Address claiming to own the token.
/// @param _tokenId - ID of token whose ownership to verify.
function _owns(address _claimant, uint256 _tokenId) internal view returns (bool) {
return (nonFungibleContract.ownerOf(_tokenId) == _claimant);
}
/// @dev Escrows the NFT, assigning ownership to this contract.
/// Throws if the escrow fails.
/// @param _owner - Current owner address of token to escrow.
/// @param _tokenId - ID of token whose approval to verify.
function _escrow(address _owner, uint256 _tokenId) internal {
// it will throw if transfer fails
nonFungibleContract.transferFrom(_owner, this, _tokenId);
}
/// @dev Transfers an NFT owned by this contract to another address.
/// Returns true if the transfer succeeds.
/// @param _receiver - Address to transfer NFT to.
/// @param _tokenId - ID of token to transfer.
function _transfer(address _receiver, uint256 _tokenId) internal {
// it will throw if transfer fails
nonFungibleContract.transfer(_receiver, _tokenId);
}
/// @dev Adds an auction to the list of open auctions. Also fires the
/// AuctionCreated event.
/// @param _tokenId The ID of the token to be put on auction.
/// @param _auction Auction to add.
function _addAuction(uint256 _tokenId, Auction _auction) internal {
tokenIdToAuction[_tokenId] = _auction;
emit AuctionCreated(
uint256(_tokenId)
);
}
/// @dev Cancels an auction unconditionally.
function _cancelAuction(uint256 _tokenId, address _seller) internal {
_removeAuction(_tokenId);
_transfer(_seller, _tokenId);
emit AuctionCancelled(_tokenId);
}
/// @dev Removes an auction from the list of open auctions.
/// @param _tokenId - ID of NFT on auction.
function _removeAuction(uint256 _tokenId) internal {
delete tokenIdToAuction[_tokenId];
}
/// @dev Computes owner's cut of a sale.
/// @param _price - Sale price of NFT.
function _computeCut(uint256 _price) internal view returns (uint256) {
// NOTE: We don't use SafeMath (or similar) in this function because
// all of our entry functions carefully cap the maximum values for
// currency (at 128-bits), and ownerCut <= 10000 (see the require()
// statement in the ClockAuction constructor). The result of this
// function is always guaranteed to be <= _price.
return _price * ownerCut / 10000;
}
}
/// @title Clock auction for non-fungible tokens.
/// @notice We omit a fallback function to prevent accidental sends to this contract.
contract BiddingAuction is Pausable, BiddingAuctionBase {
/// @dev The ERC-165 interface signature for ERC-721.
/// Ref: https://github.com/ethereum/EIPs/issues/165
/// Ref: https://github.com/ethereum/EIPs/issues/721
bytes4 constant InterfaceSignature_ERC721 = bytes4(0x9a20483d);
/// @dev Constructor creates a reference to the NFT ownership contract
/// and verifies the owner cut is in the valid range.
/// @param _nftAddress - address of a deployed contract implementing
/// the Nonfungible Interface.
constructor(address _nftAddress) public {
ERC721 candidateContract = ERC721(_nftAddress);
require(candidateContract.supportsInterface(InterfaceSignature_ERC721));
nonFungibleContract = candidateContract;
}
function cancelAuctionHashing(
uint256 _tokenId,
uint64 _endblock
)
public
pure
returns (bytes32)
{
return keccak256(abi.encodePacked(bytes4(0x486A0E9E), _tokenId, _endblock));
}
/// @dev Cancels an auction that hasn't been won yet.
/// Returns the NFT to original owner.
/// @notice This is a state-modifying function that can
/// be called while the contract is paused.
/// @param _tokenId - ID of token on auction
function cancelAuction(
uint256 _tokenId,
bytes _sig
)
external
{
Auction storage auction = tokenIdToAuction[_tokenId];
address seller = auction.seller;
uint64 endblock = auction.auctionEndBlock;
require(msg.sender == seller);
require(endblock < block.number);
bytes32 hashedTx = cancelAuctionHashing(_tokenId, endblock);
require(signedBySystem(hashedTx, _sig));
_cancelAuction(_tokenId, seller);
}
/// @dev Cancels an auction when the contract is paused.
/// Only the owner may do this, and NFTs are returned to
/// the seller. This should only be used in emergencies.
/// @param _tokenId - ID of the NFT on auction to cancel.
function cancelAuctionWhenPaused(uint256 _tokenId)
whenPaused
onlyCLevel
external
{
Auction storage auction = tokenIdToAuction[_tokenId];
_cancelAuction(_tokenId, auction.seller);
}
/// @dev Returns auction info for an NFT on auction.
/// @param _tokenId - ID of NFT on auction.
function getAuction(uint256 _tokenId)
external
view
returns
(
address seller,
uint64 startedAt,
uint16 durationIndex,
uint64 auctionEndBlock,
uint256 startingPrice,
bool allowPayDekla
) {
Auction storage auction = tokenIdToAuction[_tokenId];
return (
auction.seller,
auction.startedAt,
auction.durationIndex,
auction.auctionEndBlock,
auction.startingPrice,
auction.allowPayDekla
);
}
function setSecondsPerBlock(uint256 secs) external onlyCEO {
secondsPerBlock = secs;
}
}
contract BiddingWallet is AccessControl {
//user balances is stored in this balances map and could be withdraw by owner at anytime
mapping(address => uint) public EthBalances;
mapping(address => uint) public DeklaBalances;
ERC20 public tokens;
//the limit of deposit and withdraw the minimum amount you can deposit is 0.05 eth
//you also have to have at least 0.05 eth
uint public EthLimit = 50000000000000000;
uint public DeklaLimit = 100;
uint256 public totalEthDeposit;
uint256 public totalDklDeposit;
event withdrawSuccess(address receiver, uint amount);
event cancelPendingWithdrawSuccess(address sender);
function getNonces(address _address) public view returns (uint256) {
return nonces[_address];
}
function setSystemAddress(address _systemAddress, address _tokenAddress) internal {
systemAddress = _systemAddress;
tokens = ERC20(_tokenAddress);
}
//user will be assign an equivalent amount of bidding credit to bid
function depositETH() payable external {
require(msg.value >= EthLimit);
EthBalances[msg.sender] = EthBalances[msg.sender] + msg.value;
totalEthDeposit = totalEthDeposit + msg.value;
}
function depositDekla(
uint256 _amount,
uint256 _fee,
bytes _signature,
uint256 _nonce)
external {
address sender = tokens.recoverSigner(_signature, address(this), _amount, _fee, _nonce);
tokens.transferPreSigned(_signature, address(this), _amount, _fee, _nonce);
DeklaBalances[sender] = DeklaBalances[sender] + _amount;
totalDklDeposit = totalDklDeposit + _amount;
}
function withdrawAmountHashing(uint256 _amount, uint256 _nonce) public pure returns (bytes32) {
return keccak256(abi.encodePacked(bytes4(0x486A0E9B), _amount, _nonce));
}
// Withdraw all available eth back to user wallet, need co-verify
function withdrawEth(
uint256 _amount,
bytes _sig
) external {
require(EthBalances[msg.sender] >= _amount);
bytes32 hashedTx = withdrawAmountHashing(_amount, nonces[msg.sender]);
require(signedBySystem(hashedTx, _sig));
EthBalances[msg.sender] = EthBalances[msg.sender] - _amount;
totalEthDeposit = totalEthDeposit - _amount;
msg.sender.transfer(_amount);
nonces[msg.sender]++;
emit withdrawSuccess(msg.sender, _amount);
}
// Withdraw all available dekla back to user wallet, need co-verify
function withdrawDekla(
uint256 _amount,
bytes _sig
) external {
require(DeklaBalances[msg.sender] >= _amount);
bytes32 hashedTx = withdrawAmountHashing(_amount, nonces[msg.sender]);
require(signedBySystem(hashedTx, _sig));
DeklaBalances[msg.sender] = DeklaBalances[msg.sender] - _amount;
totalDklDeposit = totalDklDeposit - _amount;
tokens.transfer(msg.sender, _amount);
nonces[msg.sender]++;
emit withdrawSuccess(msg.sender, _amount);
}
event valueLogger(uint256 value);
//bidding success tranfer eth to seller wallet
function winBidEth(
address winner,
address seller,
uint256 sellerProceeds,
uint256 auctioneerCut
) internal {
require(EthBalances[winner] >= sellerProceeds + auctioneerCut);
seller.transfer(sellerProceeds);
EthBalances[winner] = EthBalances[winner] - (sellerProceeds + auctioneerCut);
}
//bidding success tranfer eth to seller wallet
function winBidDekla(
address winner,
address seller,
uint256 sellerProceeds,
uint256 auctioneerCut
) internal {
require(DeklaBalances[winner] >= sellerProceeds + auctioneerCut);
tokens.transfer(seller, sellerProceeds);
DeklaBalances[winner] = DeklaBalances[winner] - (sellerProceeds + auctioneerCut);
}
function() public {
revert();
}
}
/// @title Reverse auction modified for siring
/// @notice We omit a fallback function to prevent accidental sends to this contract.
contract BiddingClockAuction is BiddingAuction, BiddingWallet {
address public prizeAddress;
uint256 public prizeCut = 100;
uint256 public tokenDiscount = 100;
// @dev Sanity check that allows us to ensure that we are pointing to the
// right auction in our setSiringAuctionAddress() call.
bool public isBiddingClockAuction = true;
modifier onlySystem() {
require(msg.sender == systemAddress);
_;
}
// Delegate constructor
constructor(
address _nftAddr,
address _tokenAddress,
address _prizeAddress,
address _systemAddress,
address _ceoAddress,
address _cfoAddress,
address _cooAddress)
public
BiddingAuction(_nftAddr) {
// validate address
require(_systemAddress != address(0));
require(_tokenAddress != address(0));
require(_ceoAddress != address(0));
require(_cooAddress != address(0));
require(_cfoAddress != address(0));
require(_prizeAddress != address(0));
setSystemAddress(_systemAddress, _tokenAddress);
ceoAddress = _ceoAddress;
cooAddress = _cooAddress;
cfoAddress = _cfoAddress;
prizeAddress = _prizeAddress;
}
/// @dev Creates and begins a new auction. Since this function is wrapped,
/// require sender to be PonyCore contract.
function createETHAuction(
uint256 _tokenId,
address _seller,
uint16 _durationIndex,
uint256 _startingPrice
)
external
{
require(msg.sender == address(nonFungibleContract));
_escrow(_seller, _tokenId);
uint64 auctionEndBlock = uint64((auctionDuration[_durationIndex] / secondsPerBlock) + block.number);
Auction memory auction = Auction(
_seller,
_durationIndex,
uint64(now),
auctionEndBlock,
_startingPrice,
false
);
_addAuction(_tokenId, auction);
}
function setCut(uint256 _prizeCut, uint256 _tokenDiscount)
external
{
require(msg.sender == address(nonFungibleContract));
require(_prizeCut + _tokenDiscount < ownerCut);
prizeCut = _prizeCut;
tokenDiscount = _tokenDiscount;
}
/// @dev Creates and begins a new auction. Since this function is wrapped,
/// require sender to be PonyCore contract.
function createDklAuction(
uint256 _tokenId,
address _seller,
uint16 _durationIndex,
uint256 _startingPrice
)
external
{
require(msg.sender == address(nonFungibleContract));
_escrow(_seller, _tokenId);
uint64 auctionEndBlock = uint64((auctionDuration[_durationIndex] / secondsPerBlock) + block.number);
Auction memory auction = Auction(
_seller,
_durationIndex,
uint64(now),
auctionEndBlock,
_startingPrice,
true
);
_addAuction(_tokenId, auction);
}
function getNonces(address _address) public view returns (uint256) {
return nonces[_address];
}
function auctionEndHashing(uint _amount, uint256 _tokenId) public pure returns (bytes32) {
return keccak256(abi.encodePacked(bytes4(0x486A0F0E), _tokenId, _amount));
}
function auctionEthEnd(address _winner, uint _amount, uint256 _tokenId, bytes _sig) public onlySystem {
bytes32 hashedTx = auctionEndHashing(_amount, _tokenId);
require(recover(hashedTx, _sig) == _winner);
Auction storage auction = tokenIdToAuction[_tokenId];
uint64 endblock = auction.auctionEndBlock;
require(endblock < block.number);
require(!auction.allowPayDekla);
uint256 prize = _amount * prizeCut / 10000;
uint256 auctioneerCut = _computeCut(_amount) - prize;
uint256 sellerProceeds = _amount - auctioneerCut;
winBidEth(_winner, auction.seller, sellerProceeds, auctioneerCut);
prizeAddress.transfer(prize);
_removeAuction(_tokenId);
_transfer(_winner, _tokenId);
emit AuctionSuccessful(_tokenId, _amount, _winner);
}
function auctionDeklaEnd(address _winner, uint _amount, uint256 _tokenId, bytes _sig) public onlySystem {
bytes32 hashedTx = auctionEndHashing(_amount, _tokenId);
require(recover(hashedTx, _sig) == _winner);
Auction storage auction = tokenIdToAuction[_tokenId];
uint64 endblock = auction.auctionEndBlock;
require(endblock < block.number);
require(auction.allowPayDekla);
uint256 prize = _amount * prizeCut / 10000;
uint256 discountAmount = _amount * tokenDiscount / 10000;
uint256 auctioneerCut = _computeCut(_amount) - discountAmount - prizeCut;
uint256 sellerProceeds = _amount - auctioneerCut;
winBidDekla(_winner, auction.seller, sellerProceeds, auctioneerCut);
tokens.transfer(prizeAddress, prize);
tokens.transfer(_winner, discountAmount);
_removeAuction(_tokenId);
_transfer(_winner, _tokenId);
emit AuctionSuccessful(_tokenId, _amount, _winner);
}
/// @dev Remove all Ether from the contract, which is the owner's cuts
/// as well as any Ether sent directly to the contract address.
/// Always transfers to the NFT contract, but can be called either by
/// the owner or the NFT contract.
function withdrawBalance() external {
address nftAddress = address(nonFungibleContract);
require(
msg.sender == nftAddress
);
nftAddress.transfer(address(this).balance - totalEthDeposit);
}
function withdrawDklBalance() external {
address nftAddress = address(nonFungibleContract);
require(
msg.sender == nftAddress
);
tokens.transfer(nftAddress, tokens.balanceOf(this) - totalDklDeposit);
}
}
/// @title all functions related to creating ponies
contract PonyMinting is PonyAuction {
// Limits the number of ponies the contract owner can ever create.
uint256 public constant PROMO_CREATION_LIMIT = 50;
uint256 public constant GEN0_CREATION_LIMIT = 4950;
// Counts the number of ponies the contract owner has created.
uint256 public promoCreatedCount;
uint256 public gen0CreatedCount;
/// @dev we can create promo ponies, up to a limit. Only callable by COO
/// @param _genes the encoded genes of the pony to be created, any value is accepted
/// @param _owner the future owner of the created ponies. Default to contract COO
function createPromoPony(uint256 _genes, address _owner) external onlyCOO {
address ponyOwner = _owner;
if (ponyOwner == address(0)) {
ponyOwner = cooAddress;
}
require(promoCreatedCount < PROMO_CREATION_LIMIT);
promoCreatedCount++;
_createPony(0, 0, 0, _genes, ponyOwner, 0);
}
/// @dev Creates a new gen0 Pony with the given genes and
/// creates an auction for it.
function createGen0(uint256 _genes, uint256 _price, uint16 _durationIndex, bool _saleDKL ) external onlyCOO {
require(gen0CreatedCount < GEN0_CREATION_LIMIT);
uint256 ponyId = _createPony(0, 0, 0, _genes, ceoAddress, 0);
_approve(ponyId, biddingAuction);
if(_saleDKL) {
biddingAuction.createDklAuction(ponyId, ceoAddress, _durationIndex, _price);
} else {
biddingAuction.createETHAuction(ponyId, ceoAddress, _durationIndex, _price);
}
gen0CreatedCount++;
}
}
contract PonyUpgrade is PonyMinting {
event PonyUpgraded(uint256 upgradedPony, uint256 tributePony, uint8 unicornation);
function upgradePonyHashing(uint256 _upgradeId, uint256 _txCount) public pure returns (bytes32) {
return keccak256(abi.encodePacked(bytes4(0x486A0E9D), _upgradeId, _txCount));
}
function upgradePony(uint256 _upgradeId, uint256 _tributeId, bytes _sig)
external
whenNotPaused
{
require(_owns(msg.sender, _upgradeId));
require(_upgradeId != _tributeId);
Pony storage upPony = ponies[_upgradeId];
bytes32 hashedTx = upgradePonyHashing(_upgradeId, upPony.txCount);
require(signedBySystem(hashedTx, _sig));
upPony.txCount += 1;
if (upPony.unicornation == 0) {
if (geneScience.upgradePonyResult(upPony.unicornation, block.number)) {
upPony.unicornation += 1;
emit PonyUpgraded(_upgradeId, _tributeId, upPony.unicornation);
}
}
else if (upPony.unicornation > 0) {
require(_owns(msg.sender, _tributeId));
if (geneScience.upgradePonyResult(upPony.unicornation, block.number)) {
upPony.unicornation += 1;
_transfer(msg.sender, address(0), _tributeId);
emit PonyUpgraded(_upgradeId, _tributeId, upPony.unicornation);
} else if (upPony.unicornation == 2) {
upPony.unicornation += 1;
_transfer(msg.sender, address(0), _tributeId);
emit PonyUpgraded(_upgradeId, _tributeId, upPony.unicornation);
}
}
}
}
/// @title EtherPonies: Collectible, breedable, and oh-so-adorable ponies on the Ethereum blockchain.
/// @author Dekla (https://www.dekla.io)
/// @dev The main EtherPonies contract, keeps track of ponies so they don't wander around and get lost.
contract PonyCore is PonyUpgrade {
event WithdrawEthBalanceSuccessful(address sender, uint256 amount);
event WithdrawDeklaBalanceSuccessful(address sender, uint256 amount);
// This is the main MyEtherPonies contract. In order to keep our code seperated into logical sections,
// we've broken it up in two ways. First, we have several seperately-instantiated sibling contracts
// that handle auctions and our super-top-secret genetic combination algorithm. The auctions are
// seperate since their logic is somewhat complex and there's always a risk of subtle bugs. By keeping
// them in their own contracts, we can upgrade them without disrupting the main contract that tracks
// Pony ownership. The genetic combination algorithm is kept seperate so we can open-source all of
// the rest of our code without making it _too_ easy for folks to figure out how the genetics work.
// Don't worry, I'm sure someone will reverse engineer it soon enough!
//
// Secondly, we break the core contract into multiple files using inheritence, one for each major
// facet of functionality of CK. This allows us to keep related code bundled together while still
// avoiding a single giant file with everything in it. The breakdown is as follows:
//
// - PonyBase: This is where we define the most fundamental code shared throughout the core
// functionality. This includes our main data storage, constants and data types, plus
// internal functions for managing these items.
//
// - PonyAccessControl: This contract manages the various addresses and constraints for operations
// that can be executed only by specific roles. Namely CEO, CFO and COO.
//
// - PonyOwnership: This provides the methods required for basic non-fungible token
// transactions, following the draft ERC-721 spec (https://github.com/ethereum/EIPs/issues/721).
//
// - PonyBreeding: This file contains the methods necessary to breed ponies together, including
// keeping track of siring offers, and relies on an external genetic combination contract.
//
// - PonyAuctions: Here we have the public methods for auctioning or bidding on ponies or siring
// services. The actual auction functionality is handled in two sibling contracts (one
// for sales and one for siring), while auction creation and bidding is mostly mediated
// through this facet of the core contract.
//
// - PonyMinting: This final facet contains the functionality we use for creating new gen0 ponies.
// We can make up to 5000 "promo" ponies that can be given away (especially important when
// the community is new), and all others can only be created and then immediately put up
// for auction via an algorithmically determined starting price. Regardless of how they
// are created, there is a hard limit of 50k gen0 ponies. After that, it's all up to the
// community to breed, breed, breed!
// Set in case the core contract is broken and an upgrade is required
address public newContractAddress;
// ERC20 basic token contract being held
ERC20 public token;
/// @notice Creates the main EtherPonies smart contract instance.
constructor(
address _ceoAddress,
address _cfoAddress,
address _cooAddress,
address _systemAddress,
address _tokenAddress
) public {
// validate address
require(_ceoAddress != address(0));
require(_cooAddress != address(0));
require(_cfoAddress != address(0));
require(_systemAddress != address(0));
require(_tokenAddress != address(0));
// Starts paused.
paused = true;
// the creator of the contract is the initial CEO
ceoAddress = _ceoAddress;
cfoAddress = _cfoAddress;
cooAddress = _cooAddress;
systemAddress = _systemAddress;
token = ERC20(_tokenAddress);
// start with the mythical pony 0 - so we don't have generation-0 parent issues
_createPony(0, 0, 0, uint256(- 1), address(0), 0);
}
//check that the token is set
modifier validToken() {
require(token != address(0));
_;
}
function getTokenAddressHashing(address _token, uint256 _nonce) public pure returns (bytes32) {
return keccak256(abi.encodePacked(bytes4(0x486A1216), _token, _nonce));
}
function setTokenAddress(address _token, bytes _sig) external onlyCLevel {
bytes32 hashedTx = getTokenAddressHashing(_token, nonces[msg.sender]);
require(signedByCLevel(hashedTx, _sig));
nonces[msg.sender]++;
token = ERC20(_token);
}
/// @dev Used to mark the smart contract as upgraded, in case there is a serious
/// breaking bug. This method does nothing but keep track of the new contract and
/// emit a message indicating that the new address is set. It's up to clients of this
/// contract to update to the new contract address in that case. (This contract will
/// be paused indefinitely if such an upgrade takes place.)
/// @param _v2Address new address
function setNewAddress(address _v2Address) external onlyCEO whenPaused {
// See README.md for updgrade plan
newContractAddress = _v2Address;
emit ContractUpgrade(_v2Address);
}
/// @notice No tipping!
/// @dev Reject all Ether from being sent here, unless it's from one of the
/// two auction contracts. (Hopefully, we can prevent user accidents.)
function() external payable {
}
/// @notice Returns all the relevant information about a specific Pony.
/// @param _id The ID of the Pony of interest.
function getPony(uint256 _id)
external
view
returns (
bool isGestating,
bool isReady,
uint256 cooldownIndex,
uint256 nextActionAt,
uint256 siringWithId,
uint256 birthTime,
uint256 matronId,
uint256 sireId,
uint256 generation,
uint256 genes,
uint16 upgradeIndex,
uint8 unicornation
) {
Pony storage pon = ponies[_id];
// if this variable is 0 then it's not gestating
isGestating = (pon.matingWithId != 0);
isReady = (pon.cooldownEndBlock <= block.number);
cooldownIndex = uint256(pon.cooldownIndex);
nextActionAt = uint256(pon.cooldownEndBlock);
siringWithId = uint256(pon.matingWithId);
birthTime = uint256(pon.birthTime);
matronId = uint256(pon.matronId);
sireId = uint256(pon.sireId);
generation = uint256(pon.generation);
genes = pon.genes;
upgradeIndex = pon.txCount;
unicornation = pon.unicornation;
}
/// @dev Override unpause so it requires all external contract addresses
/// to be set before contract can be unpaused. Also, we can't have
/// newContractAddress set either, because then the contract was upgraded.
/// @notice This is public rather than external so we can call super.unpause
/// without using an expensive CALL.
function unpause() public onlyCEO whenPaused {
require(geneScience != address(0));
require(newContractAddress == address(0));
// Actually unpause the contract.
super.unpause();
}
function withdrawBalanceHashing(address _address, uint256 _nonce) public pure returns (bytes32) {
return keccak256(abi.encodePacked(bytes4(0x486A1217), _address, _nonce));
}
function withdrawEthBalance(address _withdrawWallet, bytes _sig) external onlyCLevel {
bytes32 hashedTx = withdrawBalanceHashing(_withdrawWallet, nonces[msg.sender]);
require(signedByCLevel(hashedTx, _sig));
uint256 balance = address(this).balance;
// Subtract all the currently pregnant ponies we have, plus 1 of margin.
uint256 subtractFees = (pregnantPonies + 1) * autoBirthFee;
require(balance > 0);
require(balance > subtractFees);
nonces[msg.sender]++;
_withdrawWallet.transfer(balance - subtractFees);
emit WithdrawEthBalanceSuccessful(_withdrawWallet, balance - subtractFees);
}
function withdrawDeklaBalance(address _withdrawWallet, bytes _sig) external validToken onlyCLevel {
bytes32 hashedTx = withdrawBalanceHashing(_withdrawWallet, nonces[msg.sender]);
require(signedByCLevel(hashedTx, _sig));
uint256 balance = token.balanceOf(this);
require(balance > 0);
nonces[msg.sender]++;
token.transfer(_withdrawWallet, balance);
emit WithdrawDeklaBalanceSuccessful(_withdrawWallet, balance);
}
}Contract Security Audit
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[{"constant":true,"inputs":[],"name":"cfoAddress","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"ceoAddress","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_newCFO","type":"address"},{"name":"_sig","type":"bytes"}],"name":"setCFO","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"tokenDiscount","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"_newCFO","type":"address"},{"name":"_nonce","type":"uint256"}],"name":"getCFOHashing","outputs":[{"name":"","type":"bytes32"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"hash","type":"bytes32"},{"name":"sig","type":"bytes"}],"name":"recover","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":false,"inputs":[],"name":"withdrawDklBalance","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_newCOO","type":"address"},{"name":"_sig","type":"bytes"}],"name":"setCOO","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_tokenId","type":"uint256"},{"name":"_seller","type":"address"},{"name":"_price","type":"uint256"}],"name":"createEthAuction","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[],"name":"unpause","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"","type":"uint256"}],"name":"lastGen0SalePrices","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"_newCEO","type":"address"},{"name":"_nonce","type":"uint256"}],"name":"getCEOHashing","outputs":[{"name":"","type":"bytes32"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"_sender","type":"address"}],"name":"getNonces","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"CLevelTxCount_","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_tokenId","type":"uint256"}],"name":"bidEth","outputs":[],"payable":true,"stateMutability":"payable","type":"function"},{"constant":true,"inputs":[],"name":"paused","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"withdrawBalance","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"_newCOO","type":"address"},{"name":"_nonce","type":"uint256"}],"name":"getCOOHashing","outputs":[{"name":"","type":"bytes32"}],"payable":false,"stateMutability":"pure","type":"function"},{"constant":true,"inputs":[{"name":"_tokenId","type":"uint256"}],"name":"getAuction","outputs":[{"name":"seller","type":"address"},{"name":"price","type":"uint256"},{"name":"allowPayDekla","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"ownerCut","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"pause","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"isSaleClockAuction","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_tokenId","type":"uint256"}],"name":"cancelAuctionWhenPaused","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"gen0SaleCount","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"prizeCut","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_tokenId","type":"uint256"}],"name":"cancelAuction","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"tokens","outputs":[{"name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_prizeCut","type":"uint256"},{"name":"_tokenDiscount","type":"uint256"}],"name":"setCut","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"cooAddress","outputs":[{"name":"","type":"addr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Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
00000000000000000000000031cf2697d3117efab5f5493796c94aef362c56ad000000000000000000000000a98e0024db4a1720a301f464c4dabf685e34d0780000000000000000000000005425a1ca8b650ccfe0620fd10fe6e3dc46f0211d
-----Decoded View---------------
Arg [0] : _nftAddr (address): 0x31Cf2697d3117eFaB5f5493796C94aEF362c56Ad
Arg [1] : _token (address): 0xa98e0024dB4A1720a301F464c4dabf685E34D078
Arg [2] : _prizeAddress (address): 0x5425A1cA8b650CcfE0620fd10Fe6E3dC46f0211D
-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 00000000000000000000000031cf2697d3117efab5f5493796c94aef362c56ad
Arg [1] : 000000000000000000000000a98e0024db4a1720a301f464c4dabf685e34d078
Arg [2] : 0000000000000000000000005425a1ca8b650ccfe0620fd10fe6e3dc46f0211d
Swarm Source
bzzr://d4f883e0a6b75466ecff676853e37bb93f71563a945c6f2b2fb27af01a0b606e
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Multichain Portfolio | 29 Chains
| Chain | Token | Portfolio % | Price | Amount | Value |
|---|---|---|---|---|---|
| ETH |  | 100.00% | $3,609.7 | 0.026 | $93.85 |
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.