Contract Source Code:
File 1 of 1 : Crowdsale
pragma solidity ^0.4.17;
contract J8TTokenConfig {
// The J8T decimals
uint8 public constant TOKEN_DECIMALS = 8;
// The J8T decimal factor to obtain luckys
uint256 public constant J8T_DECIMALS_FACTOR = 10**uint256(TOKEN_DECIMALS);
}
/**
* @title Ownable
* @dev The Ownable contract has an owner address, and provides basic authorization control
* functions, this simplifies the implementation of "user permissions".
*/
contract Ownable {
address public owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev The Ownable constructor sets the original `owner` of the contract to the sender
* account.
*/
function Ownable() {
owner = msg.sender;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(msg.sender == owner);
_;
}
/**
* @dev Allows the current owner to transfer control of the contract to a newOwner.
* @param newOwner The address to transfer ownership to.
*/
function transferOwnership(address newOwner) onlyOwner public {
require(newOwner != address(0));
OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
}
/**
* @title SafeMath
* @dev Math operations with safety checks that throw on error
*/
library SafeMath {
function mul(uint256 a, uint256 b) internal constant returns (uint256) {
uint256 c = a * b;
assert(a == 0 || c / a == b);
return c;
}
function div(uint256 a, uint256 b) internal constant returns (uint256) {
// assert(b > 0); // Solidity automatically throws when dividing by 0
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
function sub(uint256 a, uint256 b) internal constant returns (uint256) {
assert(b <= a);
return a - b;
}
function add(uint256 a, uint256 b) internal constant returns (uint256) {
uint256 c = a + b;
assert(c >= a);
return c;
}
}
/**
* @title ERC20Basic
* @dev Simpler version of ERC20 interface
* @dev see https://github.com/ethereum/EIPs/issues/179
*/
contract ERC20Basic {
uint256 public totalSupply;
function balanceOf(address who) public constant returns (uint256);
function transfer(address to, uint256 value) public returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
}
/**
* @title Basic token
* @dev Basic version of StandardToken, with no allowances.
*/
contract BasicToken is ERC20Basic {
using SafeMath for uint256;
mapping(address => uint256) balances;
/**
* @dev transfer token for a specified address
* @param _to The address to transfer to.
* @param _value The amount to be transferred.
*/
function transfer(address _to, uint256 _value) public returns (bool) {
require(_to != address(0));
// SafeMath.sub will throw if there is not enough balance.
balances[msg.sender] = balances[msg.sender].sub(_value);
balances[_to] = balances[_to].add(_value);
Transfer(msg.sender, _to, _value);
return true;
}
/**
* @dev Gets the balance of the specified address.
* @param _owner The address to query the the balance of.
* @return An uint256 representing the amount owned by the passed address.
*/
function balanceOf(address _owner) public constant returns (uint256 balance) {
return balances[_owner];
}
}
/**
* @title ERC20 interface
* @dev see https://github.com/ethereum/EIPs/issues/20
*/
contract ERC20 is ERC20Basic {
function allowance(address owner, address spender) public constant returns (uint256);
function transferFrom(address from, address to, uint256 value) public returns (bool);
function approve(address spender, uint256 value) public returns (bool);
event Approval(address indexed owner, address indexed spender, uint256 value);
}
/**
* @title Standard ERC20 token
*
* @dev Implementation of the basic standard token.
* @dev https://github.com/ethereum/EIPs/issues/20
* @dev Based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
*/
contract StandardToken is ERC20, BasicToken {
mapping (address => mapping (address => uint256)) allowed;
/**
* @dev Transfer tokens from one address to another
* @param _from address The address which you want to send tokens from
* @param _to address The address which you want to transfer to
* @param _value uint256 the amount of tokens to be transferred
*/
function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
require(_to != address(0));
uint256 _allowance = allowed[_from][msg.sender];
// Check is not needed because sub(_allowance, _value) will already throw if this condition is not met
// require (_value <= _allowance);
balances[_from] = balances[_from].sub(_value);
balances[_to] = balances[_to].add(_value);
allowed[_from][msg.sender] = _allowance.sub(_value);
Transfer(_from, _to, _value);
return true;
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
*
* Beware that changing an allowance with this method brings the risk that someone may use both the old
* and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
* race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
* @param _spender The address which will spend the funds.
* @param _value The amount of tokens to be spent.
*/
function approve(address _spender, uint256 _value) public returns (bool) {
allowed[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
return true;
}
/**
* @dev Function to check the amount of tokens that an owner allowed to a spender.
* @param _owner address The address which owns the funds.
* @param _spender address The address which will spend the funds.
* @return A uint256 specifying the amount of tokens still available for the spender.
*/
function allowance(address _owner, address _spender) public constant returns (uint256 remaining) {
return allowed[_owner][_spender];
}
/**
* approve should be called when allowed[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
*/
function increaseApproval (address _spender, uint _addedValue)
returns (bool success) {
allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue);
Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
function decreaseApproval (address _spender, uint _subtractedValue)
returns (bool success) {
uint oldValue = allowed[msg.sender][_spender];
if (_subtractedValue > oldValue) {
allowed[msg.sender][_spender] = 0;
} else {
allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue);
}
Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
}
/**
* @title Burnable Token
* @dev Token that can be irreversibly burned (destroyed).
*/
contract BurnableToken is StandardToken {
event Burn(address indexed burner, uint256 value);
/**
* @dev Burns a specific amount of tokens.
* @param _value The amount of token to be burned.
*/
function burn(uint256 _value) public {
require(_value > 0);
address burner = msg.sender;
balances[burner] = balances[burner].sub(_value);
totalSupply = totalSupply.sub(_value);
Burn(burner, _value);
}
}
//////////////////////////////////////////////////////////////////////
// @title J8T Token //
// @dev ERC20 J8T Token //
// //
// J8T Tokens are divisible by 1e8 (100,000,000) base //
// //
// J8T are displayed using 8 decimal places of precision. //
// //
// 1 J8T is equivalent to 100000000 luckys: //
// 100000000 == 1 * 10**8 == 1e8 == One Hundred Million luckys //
// //
// 1,5 Billion J8T (total supply) is equivalent to: //
// 150000000000000000 == 1500000000 * 10**8 == 1,5e17 luckys //
// //
//////////////////////////////////////////////////////////////////////
contract J8TToken is J8TTokenConfig, BurnableToken, Ownable {
string public constant name = "J8T Token";
string public constant symbol = "J8T";
uint256 public constant decimals = TOKEN_DECIMALS;
uint256 public constant INITIAL_SUPPLY = 1500000000 * (10 ** uint256(decimals));
event Transfer(address indexed _from, address indexed _to, uint256 _value);
function J8TToken() {
totalSupply = INITIAL_SUPPLY;
balances[msg.sender] = INITIAL_SUPPLY;
//https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20.md#transfer-1
//EIP 20: A token contract which creates new tokens SHOULD trigger a
//Transfer event with the _from address set to 0x0
//when tokens are created.
Transfer(0x0, msg.sender, INITIAL_SUPPLY);
}
}
contract ACLManaged is Ownable {
///////////////////////////
// ACLManaged PROPERTIES //
///////////////////////////
// The operational acl address
address public opsAddress;
// The admin acl address
address public adminAddress;
////////////////////////////////////////
// ACLManaged FUNCTIONS and MODIFIERS //
////////////////////////////////////////
function ACLManaged() public Ownable() {}
// Updates the opsAddress propety with the new _opsAddress value
function setOpsAddress(address _opsAddress) external onlyOwner returns (bool) {
require(_opsAddress != address(0));
require(_opsAddress != address(this));
opsAddress = _opsAddress;
return true;
}
// Updates the adminAddress propety with the new _adminAddress value
function setAdminAddress(address _adminAddress) external onlyOwner returns (bool) {
require(_adminAddress != address(0));
require(_adminAddress != address(this));
adminAddress = _adminAddress;
return true;
}
//Checks if an address is owner
function isOwner(address _address) public view returns (bool) {
bool result = (_address == owner);
return result;
}
//Checks if an address is operator
function isOps(address _address) public view returns (bool) {
bool result = (_address == opsAddress);
return result;
}
//Checks if an address is ops or admin
function isOpsOrAdmin(address _address) public view returns (bool) {
bool result = (_address == opsAddress || _address == adminAddress);
return result;
}
//Checks if an address is ops,owner or admin
function isOwnerOrOpsOrAdmin(address _address) public view returns (bool) {
bool result = (_address == opsAddress || _address == adminAddress || _address == owner);
return result;
}
//Checks whether the msg.sender address is equal to the adminAddress property or not
modifier onlyAdmin() {
//Needs to be set. Default constructor will set 0x0;
address _address = msg.sender;
require(_address != address(0));
require(_address == adminAddress);
_;
}
// Checks whether the msg.sender address is equal to the opsAddress property or not
modifier onlyOps() {
//Needs to be set. Default constructor will set 0x0;
address _address = msg.sender;
require(_address != address(0));
require(_address == opsAddress);
_;
}
// Checks whether the msg.sender address is equal to the opsAddress or adminAddress property
modifier onlyAdminAndOps() {
//Needs to be set. Default constructor will set 0x0;
address _address = msg.sender;
require(_address != address(0));
require(_address == opsAddress || _address == adminAddress);
_;
}
}
contract CrowdsaleConfig is J8TTokenConfig {
using SafeMath for uint256;
// Default start token sale date is 28th February 15:00 SGP 2018
uint256 public constant START_TIMESTAMP = 1519801200;
// Default end token sale date is 14th March 15:00 SGP 2018
uint256 public constant END_TIMESTAMP = 1521010800;
// The ETH decimal factor to obtain weis
uint256 public constant ETH_DECIMALS_FACTOR = 10**uint256(18);
// The token sale supply
uint256 public constant TOKEN_SALE_SUPPLY = 450000000 * J8T_DECIMALS_FACTOR;
// The minimum contribution amount in weis
uint256 public constant MIN_CONTRIBUTION_WEIS = 0.1 ether;
// The maximum contribution amount in weis
uint256 public constant MAX_CONTRIBUTION_WEIS = 10 ether;
//@WARNING: WORKING WITH KILO-MULTIPLES TO AVOID IMPOSSIBLE DIVISIONS OF FLOATING POINTS.
uint256 constant dollar_per_kilo_token = 100; //0.1 dollar per token
uint256 public constant dollars_per_kilo_ether = 900000; //900$ per ether
//TOKENS_PER_ETHER = dollars_per_ether / dollar_per_token
uint256 public constant INITIAL_TOKENS_PER_ETHER = dollars_per_kilo_ether.div(dollar_per_kilo_token);
}
contract Ledger is ACLManaged {
using SafeMath for uint256;
///////////////////////
// Ledger PROPERTIES //
///////////////////////
// The Allocation struct represents a token sale purchase
// amountGranted is the amount of tokens purchased
// hasClaimedBonusTokens whether the allocation has been alredy claimed
struct Allocation {
uint256 amountGranted;
uint256 amountBonusGranted;
bool hasClaimedBonusTokens;
}
// ContributionPhase enum cases are
// PreSaleContribution, the contribution has been made in the presale phase
// PartnerContribution, the contribution has been made in the private phase
enum ContributionPhase {
PreSaleContribution, PartnerContribution
}
// Map of adresses that purchased tokens on the presale phase
mapping(address => Allocation) public presaleAllocations;
// Map of adresses that purchased tokens on the private phase
mapping(address => Allocation) public partnerAllocations;
// Reference to the J8TToken contract
J8TToken public tokenContract;
// Reference to the Crowdsale contract
Crowdsale public crowdsaleContract;
// Total private allocation, counting the amount of tokens from the
// partner and the presale phase
uint256 public totalPrivateAllocation;
// Whether the token allocations can be claimed on the partner sale phase
bool public canClaimPartnerTokens;
// Whether the token allocations can be claimed on the presale sale phase
bool public canClaimPresaleTokens;
// Whether the bonus token allocations can be claimed
bool public canClaimPresaleBonusTokensPhase1;
bool public canClaimPresaleBonusTokensPhase2;
// Whether the bonus token allocations can be claimed
bool public canClaimPartnerBonusTokensPhase1;
bool public canClaimPartnerBonusTokensPhase2;
///////////////////
// Ledger EVENTS //
///////////////////
// Triggered when an allocation has been granted
event AllocationGranted(address _contributor, uint256 _amount, uint8 _phase);
// Triggered when an allocation has been revoked
event AllocationRevoked(address _contributor, uint256 _amount, uint8 _phase);
// Triggered when an allocation has been claimed
event AllocationClaimed(address _contributor, uint256 _amount);
// Triggered when a bonus allocation has been claimed
event AllocationBonusClaimed(address _contributor, uint256 _amount);
// Triggered when crowdsale contract updated
event CrowdsaleContractUpdated(address _who, address _old_address, address _new_address);
//Triggered when any can claim token boolean is updated. _type param indicates which is updated.
event CanClaimTokensUpdated(address _who, string _type, bool _oldCanClaim, bool _newCanClaim);
//////////////////////
// Ledger FUNCTIONS //
//////////////////////
// Ledger constructor
// Sets default values for canClaimPresaleTokens and canClaimPartnerTokens properties
function Ledger(J8TToken _tokenContract) public {
require(address(_tokenContract) != address(0));
tokenContract = _tokenContract;
canClaimPresaleTokens = false;
canClaimPartnerTokens = false;
canClaimPresaleBonusTokensPhase1 = false;
canClaimPresaleBonusTokensPhase2 = false;
canClaimPartnerBonusTokensPhase1 = false;
canClaimPartnerBonusTokensPhase2 = false;
}
function () external payable {
claimTokens();
}
// Revokes an allocation from the contributor with address _contributor
// Deletes the allocation from the corresponding mapping property and transfers
// the total amount of tokens of the allocation back to the Crowdsale contract
function revokeAllocation(address _contributor, uint8 _phase) public onlyAdminAndOps payable returns (uint256) {
require(_contributor != address(0));
require(_contributor != address(this));
// Can't revoke an allocation if the contribution phase is not in the ContributionPhase enum
ContributionPhase _contributionPhase = ContributionPhase(_phase);
require(_contributionPhase == ContributionPhase.PreSaleContribution ||
_contributionPhase == ContributionPhase.PartnerContribution);
uint256 grantedAllocation = 0;
// Deletes the allocation from the respective mapping
if (_contributionPhase == ContributionPhase.PreSaleContribution) {
grantedAllocation = presaleAllocations[_contributor].amountGranted.add(presaleAllocations[_contributor].amountBonusGranted);
delete presaleAllocations[_contributor];
} else if (_contributionPhase == ContributionPhase.PartnerContribution) {
grantedAllocation = partnerAllocations[_contributor].amountGranted.add(partnerAllocations[_contributor].amountBonusGranted);
delete partnerAllocations[_contributor];
}
// The granted amount allocation must be less that the current token supply on the contract
uint256 currentSupply = tokenContract.balanceOf(address(this));
require(grantedAllocation <= currentSupply);
// Updates the total private allocation substracting the amount of tokens that has been revoked
require(grantedAllocation <= totalPrivateAllocation);
totalPrivateAllocation = totalPrivateAllocation.sub(grantedAllocation);
// We sent back the amount of tokens that has been revoked to the corwdsale contract
require(tokenContract.transfer(address(crowdsaleContract), grantedAllocation));
AllocationRevoked(_contributor, grantedAllocation, _phase);
return grantedAllocation;
}
// Adds a new allocation for the contributor with address _contributor
function addAllocation(address _contributor, uint256 _amount, uint256 _bonus, uint8 _phase) public onlyAdminAndOps returns (bool) {
require(_contributor != address(0));
require(_contributor != address(this));
// Can't create or update an allocation if the amount of tokens to be allocated is not greater than zero
require(_amount > 0);
// Can't create an allocation if the contribution phase is not in the ContributionPhase enum
ContributionPhase _contributionPhase = ContributionPhase(_phase);
require(_contributionPhase == ContributionPhase.PreSaleContribution ||
_contributionPhase == ContributionPhase.PartnerContribution);
uint256 totalAmount = _amount.add(_bonus);
uint256 totalGrantedAllocation = 0;
uint256 totalGrantedBonusAllocation = 0;
// Fetch the allocation from the respective mapping and updates the granted amount of tokens
if (_contributionPhase == ContributionPhase.PreSaleContribution) {
totalGrantedAllocation = presaleAllocations[_contributor].amountGranted.add(_amount);
totalGrantedBonusAllocation = presaleAllocations[_contributor].amountBonusGranted.add(_bonus);
presaleAllocations[_contributor] = Allocation(totalGrantedAllocation, totalGrantedBonusAllocation, false);
} else if (_contributionPhase == ContributionPhase.PartnerContribution) {
totalGrantedAllocation = partnerAllocations[_contributor].amountGranted.add(_amount);
totalGrantedBonusAllocation = partnerAllocations[_contributor].amountBonusGranted.add(_bonus);
partnerAllocations[_contributor] = Allocation(totalGrantedAllocation, totalGrantedBonusAllocation, false);
}
// Updates the contract data
totalPrivateAllocation = totalPrivateAllocation.add(totalAmount);
AllocationGranted(_contributor, totalAmount, _phase);
return true;
}
// The claimTokens() function handles the contribution token claim.
// Tokens can only be claimed after we open this phase.
// The lockouts periods are defined by the foundation.
// There are 2 different lockouts:
// Presale lockout
// Partner lockout
//
// A contributor that has contributed in all the phases can claim
// all its tokens, but only the ones that are accesible to claim
// be transfered.
//
// A contributor can claim its tokens after each phase has been opened
function claimTokens() public payable returns (bool) {
require(msg.sender != address(0));
require(msg.sender != address(this));
uint256 amountToTransfer = 0;
// We need to check if the contributor has made a contribution on each
// phase, presale and partner
Allocation storage presaleA = presaleAllocations[msg.sender];
if (presaleA.amountGranted > 0 && canClaimPresaleTokens) {
amountToTransfer = amountToTransfer.add(presaleA.amountGranted);
presaleA.amountGranted = 0;
}
Allocation storage partnerA = partnerAllocations[msg.sender];
if (partnerA.amountGranted > 0 && canClaimPartnerTokens) {
amountToTransfer = amountToTransfer.add(partnerA.amountGranted);
partnerA.amountGranted = 0;
}
// The amount to transfer must greater than zero
require(amountToTransfer > 0);
// The amount to transfer must be less or equal to the current supply
uint256 currentSupply = tokenContract.balanceOf(address(this));
require(amountToTransfer <= currentSupply);
// Transfer the token allocation to contributor
require(tokenContract.transfer(msg.sender, amountToTransfer));
AllocationClaimed(msg.sender, amountToTransfer);
return true;
}
function claimBonus() external payable returns (bool) {
require(msg.sender != address(0));
require(msg.sender != address(this));
uint256 amountToTransfer = 0;
// BONUS PHASE 1
Allocation storage presale = presaleAllocations[msg.sender];
if (presale.amountBonusGranted > 0 && !presale.hasClaimedBonusTokens && canClaimPresaleBonusTokensPhase1) {
uint256 amountPresale = presale.amountBonusGranted.div(2);
amountToTransfer = amountPresale;
presale.amountBonusGranted = amountPresale;
presale.hasClaimedBonusTokens = true;
}
Allocation storage partner = partnerAllocations[msg.sender];
if (partner.amountBonusGranted > 0 && !partner.hasClaimedBonusTokens && canClaimPartnerBonusTokensPhase1) {
uint256 amountPartner = partner.amountBonusGranted.div(2);
amountToTransfer = amountToTransfer.add(amountPartner);
partner.amountBonusGranted = amountPartner;
partner.hasClaimedBonusTokens = true;
}
// BONUS PHASE 2
if (presale.amountBonusGranted > 0 && canClaimPresaleBonusTokensPhase2) {
amountToTransfer = amountToTransfer.add(presale.amountBonusGranted);
presale.amountBonusGranted = 0;
}
if (partner.amountBonusGranted > 0 && canClaimPartnerBonusTokensPhase2) {
amountToTransfer = amountToTransfer.add(partner.amountBonusGranted);
partner.amountBonusGranted = 0;
}
// The amount to transfer must greater than zero
require(amountToTransfer > 0);
// The amount to transfer must be less or equal to the current supply
uint256 currentSupply = tokenContract.balanceOf(address(this));
require(amountToTransfer <= currentSupply);
// Transfer the token allocation to contributor
require(tokenContract.transfer(msg.sender, amountToTransfer));
AllocationBonusClaimed(msg.sender, amountToTransfer);
return true;
}
// Updates the canClaimPresaleTokens propety with the new _canClaimTokens value
function setCanClaimPresaleTokens(bool _canClaimTokens) external onlyAdmin returns (bool) {
bool _oldCanClaim = canClaimPresaleTokens;
canClaimPresaleTokens = _canClaimTokens;
CanClaimTokensUpdated(msg.sender, 'canClaimPresaleTokens', _oldCanClaim, _canClaimTokens);
return true;
}
// Updates the canClaimPartnerTokens property with the new _canClaimTokens value
function setCanClaimPartnerTokens(bool _canClaimTokens) external onlyAdmin returns (bool) {
bool _oldCanClaim = canClaimPartnerTokens;
canClaimPartnerTokens = _canClaimTokens;
CanClaimTokensUpdated(msg.sender, 'canClaimPartnerTokens', _oldCanClaim, _canClaimTokens);
return true;
}
// Updates the canClaimBonusTokens property with the new _canClaimTokens value
function setCanClaimPresaleBonusTokensPhase1(bool _canClaimTokens) external onlyAdmin returns (bool) {
bool _oldCanClaim = canClaimPresaleBonusTokensPhase1;
canClaimPresaleBonusTokensPhase1 = _canClaimTokens;
CanClaimTokensUpdated(msg.sender, 'canClaimPresaleBonusTokensPhase1', _oldCanClaim, _canClaimTokens);
return true;
}
// Updates the canClaimBonusTokens property with the new _canClaimTokens value
function setCanClaimPresaleBonusTokensPhase2(bool _canClaimTokens) external onlyAdmin returns (bool) {
bool _oldCanClaim = canClaimPresaleBonusTokensPhase2;
canClaimPresaleBonusTokensPhase2 = _canClaimTokens;
CanClaimTokensUpdated(msg.sender, 'canClaimPresaleBonusTokensPhase2', _oldCanClaim, _canClaimTokens);
return true;
}
// Updates the canClaimBonusTokens property with the new _canClaimTokens value
function setCanClaimPartnerBonusTokensPhase1(bool _canClaimTokens) external onlyAdmin returns (bool) {
bool _oldCanClaim = canClaimPartnerBonusTokensPhase1;
canClaimPartnerBonusTokensPhase1 = _canClaimTokens;
CanClaimTokensUpdated(msg.sender, 'canClaimPartnerBonusTokensPhase1', _oldCanClaim, _canClaimTokens);
return true;
}
// Updates the canClaimBonusTokens property with the new _canClaimTokens value
function setCanClaimPartnerBonusTokensPhase2(bool _canClaimTokens) external onlyAdmin returns (bool) {
bool _oldCanClaim = canClaimPartnerBonusTokensPhase2;
canClaimPartnerBonusTokensPhase2 = _canClaimTokens;
CanClaimTokensUpdated(msg.sender, 'canClaimPartnerBonusTokensPhase2', _oldCanClaim, _canClaimTokens);
return true;
}
// Updates the crowdsale contract property with the new _crowdsaleContract value
function setCrowdsaleContract(Crowdsale _crowdsaleContract) public onlyOwner returns (bool) {
address old_crowdsale_address = crowdsaleContract;
crowdsaleContract = _crowdsaleContract;
CrowdsaleContractUpdated(msg.sender, old_crowdsale_address, crowdsaleContract);
return true;
}
}
contract Crowdsale is ACLManaged, CrowdsaleConfig {
using SafeMath for uint256;
//////////////////////////
// Crowdsale PROPERTIES //
//////////////////////////
// The J8TToken smart contract reference
J8TToken public tokenContract;
// The Ledger smart contract reference
Ledger public ledgerContract;
// The start token sale date represented as a timestamp
uint256 public startTimestamp;
// The end token sale date represented as a timestamp
uint256 public endTimestamp;
// Ratio of J8T tokens to per ether
uint256 public tokensPerEther;
// The total amount of wei raised in the token sale
// Including presales (in eth) and public sale
uint256 public weiRaised;
// The current total amount of tokens sold in the token sale
uint256 public totalTokensSold;
// The minimum and maximum eth contribution accepted in the token sale
uint256 public minContribution;
uint256 public maxContribution;
// The wallet address where the token sale sends all eth contributions
address public wallet;
// Controls whether the token sale has finished or not
bool public isFinalized = false;
// Map of adresses that requested to purchase tokens
// Contributors of the token sale are segmented as:
// CannotContribute: Cannot contribute in any phase (uint8 - 0)
// PreSaleContributor: Can contribute on both pre-sale and pubic sale phases (uint8 - 1)
// PublicSaleContributor: Can contribute on he public sale phase (uint8 - 2)
mapping(address => WhitelistPermission) public whitelist;
// Map of addresses that has already contributed on the token sale
mapping(address => bool) public hasContributed;
enum WhitelistPermission {
CannotContribute, PreSaleContributor, PublicSaleContributor
}
//////////////////////
// Crowdsale EVENTS //
//////////////////////
// Triggered when a contribution in the public sale has been processed correctly
event TokensPurchased(address _contributor, uint256 _amount);
// Triggered when the whitelist has been updated
event WhiteListUpdated(address _who, address _account, WhitelistPermission _phase);
// Triggered when the Crowdsale has been created
event ContractCreated();
// Triggered when a presale has been added
// The phase parameter can be a strategic partner contribution or a presale contribution
event PresaleAdded(address _contributor, uint256 _amount, uint8 _phase);
// Triggered when the tokensPerEther property has been updated
event TokensPerEtherUpdated(address _who, uint256 _oldValue, uint256 _newValue);
// Triggered when the startTimestamp property has been updated
event StartTimestampUpdated(address _who, uint256 _oldValue, uint256 _newValue);
// Triggered when the endTimestamp property has been updated
event EndTimestampUpdated(address _who, uint256 _oldValue, uint256 _newValue);
// Triggered when the wallet property has been updated
event WalletUpdated(address _who, address _oldWallet, address _newWallet);
// Triggered when the minContribution property has been updated
event MinContributionUpdated(address _who, uint256 _oldValue, uint256 _newValue);
// Triggered when the maxContribution property has been updated
event MaxContributionUpdated(address _who, uint256 _oldValue, uint256 _newValue);
// Triggered when the token sale has finalized
event Finalized(address _who, uint256 _timestamp);
// Triggered when the token sale has finalized and there where still token to sale
// When the token are not sold, we burn them
event Burned(address _who, uint256 _amount, uint256 _timestamp);
/////////////////////////
// Crowdsale FUNCTIONS //
/////////////////////////
// Crowdsale constructor
// Takes default values from the CrowdsaleConfig smart contract
function Crowdsale(
J8TToken _tokenContract,
Ledger _ledgerContract,
address _wallet
) public
{
uint256 _start = START_TIMESTAMP;
uint256 _end = END_TIMESTAMP;
uint256 _supply = TOKEN_SALE_SUPPLY;
uint256 _min_contribution = MIN_CONTRIBUTION_WEIS;
uint256 _max_contribution = MAX_CONTRIBUTION_WEIS;
uint256 _tokensPerEther = INITIAL_TOKENS_PER_ETHER;
require(_start > currentTime());
require(_end > _start);
require(_tokensPerEther > 0);
require(address(_tokenContract) != address(0));
require(address(_ledgerContract) != address(0));
require(_wallet != address(0));
ledgerContract = _ledgerContract;
tokenContract = _tokenContract;
startTimestamp = _start;
endTimestamp = _end;
tokensPerEther = _tokensPerEther;
minContribution = _min_contribution;
maxContribution = _max_contribution;
wallet = _wallet;
totalTokensSold = 0;
weiRaised = 0;
isFinalized = false;
ContractCreated();
}
// Updates the tokenPerEther propety with the new _tokensPerEther value
function setTokensPerEther(uint256 _tokensPerEther) external onlyAdmin onlyBeforeSale returns (bool) {
require(_tokensPerEther > 0);
uint256 _oldValue = tokensPerEther;
tokensPerEther = _tokensPerEther;
TokensPerEtherUpdated(msg.sender, _oldValue, tokensPerEther);
return true;
}
// Updates the startTimestamp propety with the new _start value
function setStartTimestamp(uint256 _start) external onlyAdmin returns (bool) {
require(_start < endTimestamp);
require(_start > currentTime());
uint256 _oldValue = startTimestamp;
startTimestamp = _start;
StartTimestampUpdated(msg.sender, _oldValue, startTimestamp);
return true;
}
// Updates the endTimestamp propety with the new _end value
function setEndTimestamp(uint256 _end) external onlyAdmin returns (bool) {
require(_end > startTimestamp);
uint256 _oldValue = endTimestamp;
endTimestamp = _end;
EndTimestampUpdated(msg.sender, _oldValue, endTimestamp);
return true;
}
// Updates the wallet propety with the new _newWallet value
function updateWallet(address _newWallet) external onlyAdmin returns (bool) {
require(_newWallet != address(0));
address _oldValue = wallet;
wallet = _newWallet;
WalletUpdated(msg.sender, _oldValue, wallet);
return true;
}
// Updates the minContribution propety with the new _newMinControbution value
function setMinContribution(uint256 _newMinContribution) external onlyAdmin returns (bool) {
require(_newMinContribution <= maxContribution);
uint256 _oldValue = minContribution;
minContribution = _newMinContribution;
MinContributionUpdated(msg.sender, _oldValue, minContribution);
return true;
}
// Updates the maxContribution propety with the new _newMaxContribution value
function setMaxContribution(uint256 _newMaxContribution) external onlyAdmin returns (bool) {
require(_newMaxContribution > minContribution);
uint256 _oldValue = maxContribution;
maxContribution = _newMaxContribution;
MaxContributionUpdated(msg.sender, _oldValue, maxContribution);
return true;
}
// Main public function.
function () external payable {
purchaseTokens();
}
// Revokes a presale allocation from the contributor with address _contributor
// Updates the totalTokensSold property substracting the amount of tokens that where previously allocated
function revokePresale(address _contributor, uint8 _contributorPhase) external onlyAdmin returns (bool) {
require(_contributor != address(0));
// We can only revoke allocations from pre sale or strategic partners
// ContributionPhase.PreSaleContribution == 0, ContributionPhase.PartnerContribution == 1
require(_contributorPhase == 0 || _contributorPhase == 1);
uint256 luckys = ledgerContract.revokeAllocation(_contributor, _contributorPhase);
require(luckys > 0);
require(luckys <= totalTokensSold);
totalTokensSold = totalTokensSold.sub(luckys);
return true;
}
// Adds a new presale allocation for the contributor with address _contributor
// We can only allocate presale before the token sale has been initialized
function addPresale(address _contributor, uint256 _tokens, uint256 _bonus, uint8 _contributorPhase) external onlyAdminAndOps onlyBeforeSale returns (bool) {
require(_tokens > 0);
require(_bonus > 0);
// Converts the amount of tokens to our smallest J8T value, lucky
uint256 luckys = _tokens.mul(J8T_DECIMALS_FACTOR);
uint256 bonusLuckys = _bonus.mul(J8T_DECIMALS_FACTOR);
uint256 totalTokens = luckys.add(bonusLuckys);
uint256 availableTokensToPurchase = tokenContract.balanceOf(address(this));
require(totalTokens <= availableTokensToPurchase);
// Insert the new allocation to the Ledger
require(ledgerContract.addAllocation(_contributor, luckys, bonusLuckys, _contributorPhase));
// Transfers the tokens form the Crowdsale contract to the Ledger contract
require(tokenContract.transfer(address(ledgerContract), totalTokens));
// Updates totalTokensSold property
totalTokensSold = totalTokensSold.add(totalTokens);
// If we reach the total amount of tokens to sell we finilize the token sale
availableTokensToPurchase = tokenContract.balanceOf(address(this));
if (availableTokensToPurchase == 0) {
finalization();
}
// Trigger PresaleAdded event
PresaleAdded(_contributor, totalTokens, _contributorPhase);
}
// The purchaseTokens function handles the token purchase flow
function purchaseTokens() public payable onlyDuringSale returns (bool) {
address contributor = msg.sender;
uint256 weiAmount = msg.value;
// A contributor can only contribute once on the public sale
require(hasContributed[contributor] == false);
// The contributor address must be whitelisted in order to be able to purchase tokens
require(contributorCanContribute(contributor));
// The weiAmount must be greater or equal than minContribution
require(weiAmount >= minContribution);
// The weiAmount cannot be greater than maxContribution
require(weiAmount <= maxContribution);
// The availableTokensToPurchase must be greater than 0
require(totalTokensSold < TOKEN_SALE_SUPPLY);
uint256 availableTokensToPurchase = TOKEN_SALE_SUPPLY.sub(totalTokensSold);
// We need to convert the tokensPerEther to luckys (10**8)
uint256 luckyPerEther = tokensPerEther.mul(J8T_DECIMALS_FACTOR);
// In order to calculate the tokens amount to be allocated to the contrbutor
// we need to multiply the amount of wei sent by luckyPerEther and divide the
// result for the ether decimal factor (10**18)
uint256 tokensAmount = weiAmount.mul(luckyPerEther).div(ETH_DECIMALS_FACTOR);
uint256 refund = 0;
uint256 tokensToPurchase = tokensAmount;
// If the token purchase amount is bigger than the remaining token allocation
// we can only sell the remainging tokens and refund the unused amount of eth
if (availableTokensToPurchase < tokensAmount) {
tokensToPurchase = availableTokensToPurchase;
weiAmount = tokensToPurchase.mul(ETH_DECIMALS_FACTOR).div(luckyPerEther);
refund = msg.value.sub(weiAmount);
}
// We update the token sale contract data
totalTokensSold = totalTokensSold.add(tokensToPurchase);
uint256 weiToPurchase = tokensToPurchase.div(tokensPerEther);
weiRaised = weiRaised.add(weiToPurchase);
// Transfers the tokens form the Crowdsale contract to contriutors wallet
require(tokenContract.transfer(contributor, tokensToPurchase));
// Issue a refund for any unused ether
if (refund > 0) {
contributor.transfer(refund);
}
// Transfer ether contribution to the wallet
wallet.transfer(weiAmount);
// Update hasContributed mapping
hasContributed[contributor] = true;
TokensPurchased(contributor, tokensToPurchase);
// If we reach the total amount of tokens to sell we finilize the token sale
if (totalTokensSold == TOKEN_SALE_SUPPLY) {
finalization();
}
return true;
}
// Updates the whitelist
function updateWhitelist(address _account, WhitelistPermission _permission) external onlyAdminAndOps returns (bool) {
require(_account != address(0));
require(_permission == WhitelistPermission.PreSaleContributor || _permission == WhitelistPermission.PublicSaleContributor || _permission == WhitelistPermission.CannotContribute);
require(!saleHasFinished());
whitelist[_account] = _permission;
address _who = msg.sender;
WhiteListUpdated(_who, _account, _permission);
return true;
}
function updateWhitelist_batch(address[] _accounts, WhitelistPermission _permission) external onlyAdminAndOps returns (bool) {
require(_permission == WhitelistPermission.PreSaleContributor || _permission == WhitelistPermission.PublicSaleContributor || _permission == WhitelistPermission.CannotContribute);
require(!saleHasFinished());
for(uint i = 0; i < _accounts.length; ++i) {
require(_accounts[i] != address(0));
whitelist[_accounts[i]] = _permission;
WhiteListUpdated(msg.sender, _accounts[i], _permission);
}
return true;
}
// Checks that the status of an address account
// Contributors of the token sale are segmented as:
// PreSaleContributor: Can contribute on both pre-sale and pubic sale phases
// PublicSaleContributor: Can contribute on he public sale phase
// CannotContribute: Cannot contribute in any phase
function contributorCanContribute(address _contributorAddress) private view returns (bool) {
WhitelistPermission _contributorPhase = whitelist[_contributorAddress];
if (_contributorPhase == WhitelistPermission.CannotContribute) {
return false;
}
if (_contributorPhase == WhitelistPermission.PreSaleContributor ||
_contributorPhase == WhitelistPermission.PublicSaleContributor) {
return true;
}
return false;
}
// Returns the current time
function currentTime() public view returns (uint256) {
return now;
}
// Checks if the sale has finished
function saleHasFinished() public view returns (bool) {
if (isFinalized) {
return true;
}
if (endTimestamp < currentTime()) {
return true;
}
if (totalTokensSold == TOKEN_SALE_SUPPLY) {
return true;
}
return false;
}
modifier onlyBeforeSale() {
require(currentTime() < startTimestamp);
_;
}
modifier onlyDuringSale() {
uint256 _currentTime = currentTime();
require(startTimestamp < _currentTime);
require(_currentTime < endTimestamp);
_;
}
modifier onlyPostSale() {
require(endTimestamp < currentTime());
_;
}
///////////////////////
// PRIVATE FUNCTIONS //
///////////////////////
// This method is for to be called only for the owner. This way we protect for anyone who wanna finalize the ICO.
function finalize() external onlyAdmin returns (bool) {
return finalization();
}
// Only used by finalize and setFinalized.
// Overloaded logic for two uses.
// NOTE: In case finalize is called by an user and not from addPresale()/purchaseToken()
// will diff total supply with sold supply to burn token.
function finalization() private returns (bool) {
require(!isFinalized);
isFinalized = true;
if (totalTokensSold < TOKEN_SALE_SUPPLY) {
uint256 toBurn = TOKEN_SALE_SUPPLY.sub(totalTokensSold);
tokenContract.burn(toBurn);
Burned(msg.sender, toBurn, currentTime());
}
Finalized(msg.sender, currentTime());
return true;
}
function saleSupply() public view returns (uint256) {
return tokenContract.balanceOf(address(this));
}
}