Contract Source Code:
File 1 of 1 : ESOSToken
pragma solidity ^0.4.25;
contract ERC20Interface {
// Get the total token supply
function totalSupply() public constant returns (uint256 tS);
// Get the account balance of another account with address _owner
function balanceOf(address _owner) constant public returns (uint256 balance);
// Send _value amount of tokens to address _to
function transfer(address _to, uint256 _value) public returns (bool success);
// Send _value amount of tokens from address _from to address _to
function transferFrom(address _from, address _to, uint256 _value) public returns (bool success);
// Allow _spender to withdraw from your account, multiple times, up to the _value amount.
// If this function is called again it overwrites the current allowance with _value.
// this function is required for some DEX functionality
function approve(address _spender, uint256 _value) public returns (bool success);
// Returns the amount which _spender is still allowed to withdraw from _owner
function allowance(address _owner, address _spender) constant public returns (uint256 remaining);
// Used for burning excess tokens after ICO.
function burnExcess(uint256 _value) public returns (bool success);
// Used for burning excess tokens after ICO.
function transferWithFee(address _to, uint256 _value, uint256 _fee) public returns (bool success);
// Triggered when tokens are transferred.
event Transfer(address indexed _from, address indexed _to, uint256 _value);
// Triggered whenever approve(address _spender, uint256 _value) is called.
event Approval(address indexed _owner, address indexed _spender, uint256 _value);
// Triggered whenever tokens are destroyed
event Burn(address indexed from, uint256 value);
// Triggered when tokens are transferred.
event TransferWithFee(address indexed _from, address indexed _to, uint256 _value, uint256 _fee);
}
contract ESOSToken is ERC20Interface {
string public constant symbol = "ESOS";
string public constant name = "Eso Token";
uint8 public constant decimals = 18;
uint256 _totalSupply = 70000000 * 10 ** uint256(decimals);
address public owner;
mapping(address => uint256) balances;
mapping(address => mapping (address => uint256)) allowed;
//constructor
constructor() public {
owner = msg.sender;
balances[owner] = _totalSupply;
}
// Handle ether mistakenly sent to contract
function () public payable {
if (msg.value > 0) {
if (!owner.send(msg.value)) revert();
}
}
// Get the total token supply
function totalSupply() public constant returns (uint256 tS) {
tS = _totalSupply;
}
// What is the balance of a particular account?
function balanceOf(address _owner) public constant returns (uint256 balance) {
return balances[_owner];
}
// Transfer the balance from owner's account to another account
function transfer(address _to, uint256 _amount) public returns (bool success) {
if (balances[msg.sender] >= _amount
&& _amount > 0
&& balances[_to] + _amount > balances[_to]) {
balances[msg.sender] -= _amount;
balances[_to] += _amount;
emit Transfer(msg.sender, _to, _amount);
return true;
} else {
return false;
}
}
// Send _value amount of tokens from address _from to address _to
// The transferFrom method is used for a withdraw workflow, allowing contracts to send
// tokens on your behalf, for example to "deposit" to a contract address and/or to charge
// fees in sub-currencies; the command should fail unless the _from account has
// deliberately authorized the sender of the message via some mechanism; we propose
// these standardized APIs for approval:
function transferFrom(address _from, address _to, uint256 _amount) public returns (bool success) {
if (balances[_from] >= _amount
&& allowed[_from][msg.sender] >= _amount
&& _amount > 0
&& balances[_to] + _amount > balances[_to]) {
balances[_from] -= _amount;
allowed[_from][msg.sender] -= _amount;
balances[_to] += _amount;
emit Transfer(_from, _to, _amount);
return true;
} else {
return false;
}
}
// Allow _spender to withdraw from your account, multiple times, up to the _value amount.
// If this function is called again it overwrites the current allowance with _value.
function approve(address _spender, uint256 _amount) public returns (bool success) {
allowed[msg.sender][_spender] = _amount;
emit Approval(msg.sender, _spender, _amount);
return true;
}
function allowance(address _owner, address _spender) public constant returns (uint256 remaining) {
return allowed[_owner][_spender];
}
// Used for burning excess tokens after ICO.
function burnExcess(uint256 _value) public returns (bool success) {
require(balanceOf(msg.sender) >= _value && msg.sender == owner && _value > 0);
balances[msg.sender] -= _value;
_totalSupply -= _value;
emit Burn(msg.sender, _value);
return true;
}
// Transfer the balance from owner's account to another account plus a fee to the contract owner owner
function transferWithFee(address _to, uint256 _amount, uint256 _fee) public returns (bool success) {
if (balances[msg.sender] >= _amount + _fee
&& _amount > 0
&& _fee > 0
&& balances[_to] + _amount > balances[_to]) {
balances[msg.sender] -= _amount + _fee;
balances[_to] += _amount;
balances[owner] += _fee;
emit TransferWithFee(msg.sender, _to, _amount, _fee);
return true;
} else {
return false;
}
}
}