文件 1 的 1:LendConnect.sol
pragma solidity ^0.4.17;
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);
}
contract Ownable {
address public owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
function Ownable() public {
owner = msg.sender;
}
modifier onlyOwner() {
require(msg.sender == owner);
_;
}
function transferOwnership(address newOwner) onlyOwner public {
require(newOwner != address(0));
OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
}
library SafeMath {
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a * b;
assert(a == 0 || c / a == b);
return c;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a / b;
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;
}
}
contract SafeBasicToken is ERC20Basic {
using SafeMath for uint256;
mapping(address => uint256) balances;
modifier onlyPayloadSize(uint size) {
assert(msg.data.length >= size + 4);
_;
}
function transfer(address _to, uint256 _value) onlyPayloadSize(2 * 32) public returns (bool) {
require(_to != address(0));
balances[msg.sender] = balances[msg.sender].sub(_value);
balances[_to] = balances[_to].add(_value);
Transfer(msg.sender, _to, _value);
return true;
}
function balanceOf(address _owner) public constant returns (uint256 balance) {
return balances[_owner];
}
}
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);
}
contract SafeStandardToken is ERC20, SafeBasicToken {
mapping (address => mapping (address => uint256)) allowed;
function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
require(_to != address(0));
uint256 _allowance = allowed[_from][msg.sender];
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;
}
function approve(address _spender, uint256 _value) public returns (bool) {
allowed[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
return true;
}
function allowance(address _owner, address _spender) public constant returns (uint256 remaining) {
return allowed[_owner][_spender];
}
function increaseApproval (address _spender, uint _addedValue) public
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) public
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;
}
}
contract LendConnect is SafeStandardToken{
string public constant name = "LendConnect Token";
string public constant symbol = "LCT";
uint256 public constant decimals = 18;
uint256 public constant INITIAL_SUPPLY = 6500000 * (10 ** uint256(decimals));
function LendConnect(address _ownerAddress) public {
totalSupply = INITIAL_SUPPLY;
balances[_ownerAddress] = INITIAL_SUPPLY;
}
}
contract Crowdsale is Ownable {
using SafeMath for uint256;
LendConnect public token;
uint256 public start_time = 1511377200;
uint256 public phase_1_Time = 1511809200;
uint256 public phase_2_Time = 1512241200;
uint256 public phase_3_Time = 1512673200;
uint256 public phase_4_Time = 1513105200;
uint256 public end_Time = 1513278000;
uint256 public phase_1_remaining_tokens = 1000000 * (10 ** uint256(18));
uint256 public phase_2_remaining_tokens = 1000000 * (10 ** uint256(18));
uint256 public phase_3_remaining_tokens = 1000000 * (10 ** uint256(18));
uint256 public phase_4_remaining_tokens = 1000000 * (10 ** uint256(18));
uint256 public phase_5_remaining_tokens = 1000000 * (10 ** uint256(18));
mapping(address => uint256) phase_1_balances;
mapping(address => uint256) phase_2_balances;
mapping(address => uint256) phase_3_balances;
mapping(address => uint256) phase_4_balances;
mapping(address => uint256) phase_5_balances;
address public wallet;
uint256 public rate = 730;
uint256 public weiRaised;
event TokenPurchase(address indexed purchaser, address indexed beneficiary, uint256 value, uint256 amount);
event RateChanged(address indexed owner, uint256 old_rate, uint256 new_rate);
function Crowdsale(address tokenContractAddress, address _walletAddress) public{
wallet = _walletAddress;
token = LendConnect(tokenContractAddress);
}
function () payable public{
buyTokens(msg.sender);
}
function buyTokens(address beneficiary) public payable {
require(beneficiary != 0x0);
require(validPurchase());
uint256 weiAmount = msg.value;
uint256 tokens = weiAmount.mul(rate);
require(isTokenAvailable(tokens));
weiRaised = weiRaised.add(weiAmount);
token.transfer(beneficiary, tokens);
updatePhaseSupplyAndBalance(tokens);
TokenPurchase(msg.sender, beneficiary, weiAmount, tokens);
forwardFunds();
}
function isTokenAvailable(uint256 _tokens) internal constant returns (bool){
uint256 current_time = now;
uint256 total_expected_tokens = 0;
if(current_time > start_time && current_time < phase_1_Time){
total_expected_tokens = _tokens + phase_1_balances[msg.sender];
return total_expected_tokens <= 10000 * (10 ** uint256(18)) &&
_tokens <= phase_1_remaining_tokens;
}
else if(current_time > phase_1_Time && current_time < phase_2_Time){
total_expected_tokens = _tokens + phase_2_balances[msg.sender];
return total_expected_tokens <= 2000 * (10 ** uint256(18)) &&
_tokens <= phase_2_remaining_tokens;
}
else if(current_time > phase_2_Time && current_time < phase_3_Time){
total_expected_tokens = _tokens + phase_3_balances[msg.sender];
return total_expected_tokens <= 2000 * (10 ** uint256(18)) &&
_tokens <= phase_3_remaining_tokens;
}
else if(current_time > phase_3_Time && current_time < phase_4_Time){
total_expected_tokens = _tokens + phase_4_balances[msg.sender];
return total_expected_tokens <= 3500 * (10 ** uint256(18)) &&
_tokens <= phase_4_remaining_tokens;
}
else{
total_expected_tokens = _tokens + phase_5_balances[msg.sender];
return total_expected_tokens <= 3500 * (10 ** uint256(18)) &&
_tokens <= phase_5_remaining_tokens;
}
}
function updatePhaseSupplyAndBalance(uint256 _tokens) internal {
uint256 current_time = now;
if(current_time > start_time && current_time < phase_1_Time){
phase_1_balances[msg.sender] = phase_1_balances[msg.sender].add(_tokens);
phase_1_remaining_tokens = phase_1_remaining_tokens - _tokens;
}
else if(current_time > phase_1_Time && current_time < phase_2_Time){
phase_2_balances[msg.sender] = phase_2_balances[msg.sender].add(_tokens);
phase_2_remaining_tokens = phase_2_remaining_tokens - _tokens;
}
else if(current_time > phase_2_Time && current_time < phase_3_Time){
phase_3_balances[msg.sender] = phase_3_balances[msg.sender].add(_tokens);
phase_3_remaining_tokens = phase_3_remaining_tokens - _tokens;
}
else if(current_time > phase_3_Time && current_time < phase_4_Time){
phase_4_balances[msg.sender] = phase_4_balances[msg.sender].add(_tokens);
phase_4_remaining_tokens = phase_4_remaining_tokens - _tokens;
}
else{
phase_5_balances[msg.sender] = phase_5_balances[msg.sender].add(_tokens);
phase_5_remaining_tokens = phase_5_remaining_tokens - _tokens;
}
}
function forwardFunds() internal {
wallet.transfer(msg.value);
}
function validPurchase() internal constant returns (bool) {
bool withinPeriod = now >= start_time && now <= end_Time;
bool nonZeroPurchase = msg.value != 0;
return withinPeriod && nonZeroPurchase;
}
function hasEnded() public constant returns (bool) {
return now > end_Time;
}
function transferBack(uint256 tokens) onlyOwner public returns (bool){
token.transfer(owner, tokens);
return true;
}
function changeRate(uint256 _rate) onlyOwner public returns (bool){
RateChanged(msg.sender, rate, _rate);
rate = _rate;
return true;
}
function tokenBalance() constant public returns (uint256){
return token.balanceOf(this);
}
}
{
"compilationTarget": {
"LendConnect.sol": "LendConnect"
},
"libraries": {},
"optimizer": {
"enabled": false,
"runs": 0
},
"remappings": []
}