Contract Source Code:
File 1 of 1 : NaviToken
pragma solidity ^0.4.19;
// File: zeppelin-solidity/contracts/math/SafeMath.sol
/**
* @title SafeMath
* @dev Math operations with safety checks that throw on error
*/
library SafeMath {
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
uint256 c = a * b;
assert(c / a == b);
return c;
}
function div(uint256 a, uint256 b) internal pure 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 pure returns (uint256) {
assert(b <= a);
return a - b;
}
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
assert(c >= a);
return c;
}
}
// File: zeppelin-solidity/contracts/ownership/Ownable.sol
/**
* @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() public {
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) public onlyOwner {
require(newOwner != address(0));
OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
}
// File: zeppelin-solidity/contracts/token/ERC20Basic.sol
/**
* @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 view returns (uint256);
function transfer(address to, uint256 value) public returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
}
// File: zeppelin-solidity/contracts/token/BasicToken.sol
/**
* @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));
require(_value <= balances[msg.sender]);
// 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 view returns (uint256 balance) {
return balances[_owner];
}
}
// File: zeppelin-solidity/contracts/token/ERC20.sol
/**
* @title ERC20 interface
* @dev see https://github.com/ethereum/EIPs/issues/20
*/
contract ERC20 is ERC20Basic {
function allowance(address owner, address spender) public view 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);
}
// File: zeppelin-solidity/contracts/token/StandardToken.sol
/**
* @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)) internal 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));
require(_value <= balances[_from]);
require(_value <= allowed[_from][msg.sender]);
balances[_from] = balances[_from].sub(_value);
balances[_to] = balances[_to].add(_value);
allowed[_from][msg.sender] = allowed[_from][msg.sender].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 view returns (uint256) {
return allowed[_owner][_spender];
}
/**
* @dev Increase the amount of tokens that an owner allowed to a 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
* @param _spender The address which will spend the funds.
* @param _addedValue The amount of tokens to increase the allowance by.
*/
function increaseApproval(address _spender, uint _addedValue) public returns (bool) {
allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue);
Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
/**
* @dev Decrease the amount of tokens that an owner allowed to a spender.
*
* approve should be called when allowed[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param _spender The address which will spend the funds.
* @param _subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseApproval(address _spender, uint _subtractedValue) public returns (bool) {
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;
}
}
// File: contracts/NaviToken.sol
contract NaviToken is StandardToken, Ownable {
event AssignmentStopped();
event Frosted(address indexed to, uint256 amount, uint256 defrostClass);
event Defrosted(address indexed to, uint256 amount, uint256 defrostClass);
using SafeMath for uint256;
/* Overriding some ERC20 variables */
string public constant name = "NaviToken";
string public constant symbol = "NAVI";
uint8 public constant decimals = 18;
uint256 public constant MAX_NUM_NAVITOKENS = 1000000000 * 10 ** uint256(decimals);
uint256 public constant START_ICO_TIMESTAMP = 1519912800; // TODO: line to uncomment for the PROD before the main net deployment
//uint256 public START_ICO_TIMESTAMP; // TODO: !!! line to remove before the main net deployment (not constant for testing and overwritten in the constructor)
uint256 public constant MONTH_IN_MINUTES = 43200; // month in minutes (1month = 43200 min)
uint256 public constant DEFROST_AFTER_MONTHS = 6;
uint256 public constant DEFROST_FACTOR_TEAMANDADV = 30;
enum DefrostClass {Contributor, ReserveAndTeam, Advisor}
// Fields that can be changed by functions
address[] icedBalancesReserveAndTeam;
mapping (address => uint256) mapIcedBalancesReserveAndTeamFrosted;
mapping (address => uint256) mapIcedBalancesReserveAndTeamDefrosted;
address[] icedBalancesAdvisors;
mapping (address => uint256) mapIcedBalancesAdvisors;
//Boolean to allow or not the initial assignement of token (batch)
bool public batchAssignStopped = false;
modifier canAssign() {
require(!batchAssignStopped);
require(elapsedMonthsFromICOStart() < 2);
_;
}
function NaviToken() public {
// for test only: set START_ICO to contract creation timestamp
//START_ICO_TIMESTAMP = now; // TODO: line to remove before the main net deployment
}
/**
* @dev Transfer tokens in batches (of addresses)
* @param _addr address The address which you want to send tokens from
* @param _amounts address The address which you want to transfer to
*/
function batchAssignTokens(address[] _addr, uint256[] _amounts, DefrostClass[] _defrostClass) public onlyOwner canAssign {
require(_addr.length == _amounts.length && _addr.length == _defrostClass.length);
//Looping into input arrays to assign target amount to each given address
for (uint256 index = 0; index < _addr.length; index++) {
address toAddress = _addr[index];
uint amount = _amounts[index];
DefrostClass defrostClass = _defrostClass[index]; // 0 = ico contributor, 1 = reserve and team , 2 = advisor
totalSupply = totalSupply.add(amount);
require(totalSupply <= MAX_NUM_NAVITOKENS);
if (defrostClass == DefrostClass.Contributor) {
// contributor account
balances[toAddress] = balances[toAddress].add(amount);
Transfer(address(0), toAddress, amount);
} else if (defrostClass == DefrostClass.ReserveAndTeam) {
// Iced account. The balance is not affected here
icedBalancesReserveAndTeam.push(toAddress);
mapIcedBalancesReserveAndTeamFrosted[toAddress] = mapIcedBalancesReserveAndTeamFrosted[toAddress].add(amount);
Frosted(toAddress, amount, uint256(defrostClass));
} else if (defrostClass == DefrostClass.Advisor) {
// advisors account: tokens to defrost
icedBalancesAdvisors.push(toAddress);
mapIcedBalancesAdvisors[toAddress] = mapIcedBalancesAdvisors[toAddress].add(amount);
Frosted(toAddress, amount, uint256(defrostClass));
}
}
}
function elapsedMonthsFromICOStart() view public returns (uint256) {
return (now <= START_ICO_TIMESTAMP) ? 0 : (now - START_ICO_TIMESTAMP) / 60 / MONTH_IN_MINUTES;
}
function canDefrostReserveAndTeam() view public returns (bool) {
return elapsedMonthsFromICOStart() > DEFROST_AFTER_MONTHS;
}
function defrostReserveAndTeamTokens() public {
require(canDefrostReserveAndTeam());
uint256 monthsIndex = elapsedMonthsFromICOStart() - DEFROST_AFTER_MONTHS;
if (monthsIndex > DEFROST_FACTOR_TEAMANDADV){
monthsIndex = DEFROST_FACTOR_TEAMANDADV;
}
// Looping into the iced accounts
for (uint256 index = 0; index < icedBalancesReserveAndTeam.length; index++) {
address currentAddress = icedBalancesReserveAndTeam[index];
uint256 amountTotal = mapIcedBalancesReserveAndTeamFrosted[currentAddress].add(mapIcedBalancesReserveAndTeamDefrosted[currentAddress]);
uint256 targetDefrosted = monthsIndex.mul(amountTotal).div(DEFROST_FACTOR_TEAMANDADV);
uint256 amountToRelease = targetDefrosted.sub(mapIcedBalancesReserveAndTeamDefrosted[currentAddress]);
if (amountToRelease > 0) {
mapIcedBalancesReserveAndTeamFrosted[currentAddress] = mapIcedBalancesReserveAndTeamFrosted[currentAddress].sub(amountToRelease);
mapIcedBalancesReserveAndTeamDefrosted[currentAddress] = mapIcedBalancesReserveAndTeamDefrosted[currentAddress].add(amountToRelease);
balances[currentAddress] = balances[currentAddress].add(amountToRelease);
Transfer(address(0), currentAddress, amountToRelease);
Defrosted(currentAddress, amountToRelease, uint256(DefrostClass.ReserveAndTeam));
}
}
}
function canDefrostAdvisors() view public returns (bool) {
return elapsedMonthsFromICOStart() >= DEFROST_AFTER_MONTHS;
}
function defrostAdvisorsTokens() public {
require(canDefrostAdvisors());
for (uint256 index = 0; index < icedBalancesAdvisors.length; index++) {
address currentAddress = icedBalancesAdvisors[index];
uint256 amountToDefrost = mapIcedBalancesAdvisors[currentAddress];
if (amountToDefrost > 0) {
balances[currentAddress] = balances[currentAddress].add(amountToDefrost);
mapIcedBalancesAdvisors[currentAddress] = mapIcedBalancesAdvisors[currentAddress].sub(amountToDefrost);
Transfer(address(0), currentAddress, amountToDefrost);
Defrosted(currentAddress, amountToDefrost, uint256(DefrostClass.Advisor));
}
}
}
function stopBatchAssign() public onlyOwner canAssign {
batchAssignStopped = true;
AssignmentStopped();
}
function() public payable {
revert();
}
}