pragma solidity ^0.4.18;
// File: contracts/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: contracts/zeppelin-solidity/contracts/ownership/Claimable.sol
/**
* @title Claimable
* @dev Extension for the Ownable contract, where the ownership needs to be claimed.
* This allows the new owner to accept the transfer.
*/
contract Claimable is Ownable {
address public pendingOwner;
/**
* @dev Modifier throws if called by any account other than the pendingOwner.
*/
modifier onlyPendingOwner() {
require(msg.sender == pendingOwner);
_;
}
/**
* @dev Allows the current owner to set the pendingOwner address.
* @param newOwner The address to transfer ownership to.
*/
function transferOwnership(address newOwner) onlyOwner public {
pendingOwner = newOwner;
}
/**
* @dev Allows the pendingOwner address to finalize the transfer.
*/
function claimOwnership() onlyPendingOwner public {
OwnershipTransferred(owner, pendingOwner);
owner = pendingOwner;
pendingOwner = address(0);
}
}
// File: contracts/OwnClaimRenounceable.sol
/**
* @title `owner` can renounce its role and leave the contract unowned.
* @dev There can not be a new `owner`.
* @dev No `onlyOwner` functions can ever be called again.
*/
contract OwnClaimRenounceable is Claimable {
function renounceOwnershipForever(uint8 _confirm)
public
onlyOwner
{
require(_confirm == 73); // Owner knows what he's doing
owner = address(0);
pendingOwner = address(0);
}
}
// File: contracts/TokenController.sol
/** The interface for a token contract to notify a controller of every transfers. */
contract TokenController {
bytes4 public constant INTERFACE = bytes4(keccak256("TokenController"));
function allowTransfer(address _sender, address _from, address _to, uint256 _value, bytes _purpose) public returns (bool);
}
// Basic examples
contract YesController is TokenController {
function allowTransfer(address /* _sender */, address /* _from */, address /* _to */, uint256 /* _value */, bytes /* _purpose */)
public returns (bool)
{
return true; // allow all transfers
}
}
contract NoController is TokenController {
function allowTransfer(address /* _sender */, address /* _from */, address /* _to */, uint256 /* _value */, bytes /* _purpose */)
public returns (bool)
{
return false; // veto all transfers
}
}
// File: contracts/zeppelin-solidity/contracts/math/SafeMath.sol
/**
* @title SafeMath
* @dev Math operations with safety checks that throw on error
*/
library SafeMath {
/**
* @dev Multiplies two numbers, throws on overflow.
*/
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;
}
/**
* @dev Integer division of two numbers, truncating the quotient.
*/
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;
}
/**
* @dev Substracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend).
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
assert(b <= a);
return a - b;
}
/**
* @dev Adds two numbers, throws on overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
assert(c >= a);
return c;
}
}
// File: contracts/zeppelin-solidity/contracts/token/ERC20/ERC20Basic.sol
/**
* @title ERC20Basic
* @dev Simpler version of ERC20 interface
* @dev see https://github.com/ethereum/EIPs/issues/179
*/
contract ERC20Basic {
function totalSupply() public view returns (uint256);
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: contracts/zeppelin-solidity/contracts/token/ERC20/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;
uint256 totalSupply_;
/**
* @dev total number of tokens in existence
*/
function totalSupply() public view returns (uint256) {
return totalSupply_;
}
/**
* @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: contracts/zeppelin-solidity/contracts/token/ERC20/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: contracts/zeppelin-solidity/contracts/token/ERC20/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/SapienCoin.sol
/**
* @title Has a `controller`.
* @dev The `controller` must be a contract implementing TokenController.
* @dev The `controller` can track or veto the tokens transfers.
* @dev The `controller` can assign its role to another address.
* @dev The `owner` have all the powers of the `controller`.
*/
contract Controlled is OwnClaimRenounceable {
bytes4 public constant TOKEN_CONTROLLER_INTERFACE = bytes4(keccak256("TokenController"));
TokenController public controller;
function Controlled() public {}
/// @notice The address of the controller is the only address that can call
/// a function with this modifier
modifier onlyControllerOrOwner {
require((msg.sender == address(controller)) || (msg.sender == owner));
_;
}
/// @notice Changes the controller of the contract
/// @param _newController The new controller of the contract
function changeController(TokenController _newController)
public onlyControllerOrOwner
{
if(address(_newController) != address(0)) {
// Check type to prevent mistakes
require(_newController.INTERFACE() == TOKEN_CONTROLLER_INTERFACE);
}
controller = _newController;
}
}
contract ControlledToken is StandardToken, Controlled {
modifier controllerCallback(address _from, address _to, uint256 _value, bytes _purpose) {
// If a controller is present, ask it about the transfer.
if(address(controller) != address(0)) {
bool _allow = controller.allowTransfer(msg.sender, _from, _to, _value, _purpose);
if(!_allow) {
return; // Do not transfer
}
}
_; // Proceed with the transfer
}
/** @dev ERC20 transfer with controller callback */
function transfer(address _to, uint256 _value)
public
controllerCallback(msg.sender, _to, _value, hex"")
returns (bool)
{
return super.transfer(_to, _value);
}
/** @dev ERC20 transferFrom with controller callback */
function transferFrom(address _from, address _to, uint256 _value)
public
controllerCallback(_from, _to, _value, hex"")
returns (bool)
{
return super.transferFrom(_from, _to, _value);
}
/**
* @dev Transfer tokens to a specified address, including a purpose.
* @param _to The address to transfer to.
* @param _value The amount to be transferred.
* @param _purpose Arbitrary data attached to the transaction.
*/
function transferWithPurpose(address _to, uint256 _value, bytes _purpose)
public
controllerCallback(msg.sender, _to, _value, _purpose)
returns (bool)
{
return super.transfer(_to, _value);
}
}
contract BatchToken is ControlledToken {
/**
* @dev Transfer to many addresses in a single transaction.
* @dev Call transfer(to, amount) with the arguments taken from two arrays.
* @dev If one transfer is invalid, everything is aborted.
* @dev The `_expectZero` option is intended for the initial batch minting.
* It allows operations to be retried and prevents double-minting due to the
* asynchronous and uncertain nature of blockchain transactions.
* It should be avoided after trading has started.
* @param _toArray Addresses that will receive tokens.
* @param _amountArray Amounts of tokens to transfer, in the same order as `_toArray`.
* @param _expectZero If false, transfer the tokens immediately.
* If true, expect the current balance of `_to` to be zero before
* the transfer. If not zero, skip this transfer but continue.
*/
function transferBatchIdempotent(address[] _toArray, uint256[] _amountArray, bool _expectZero)
// Anyone can call if they have the balance
public
{
// Check that the arrays are the same size
uint256 _count = _toArray.length;
require(_amountArray.length == _count);
for (uint256 i = 0; i < _count; i++) {
address _to = _toArray[i];
// Either regular transfer, or check that BasicToken.balances is zero.
if(!_expectZero || (balanceOf(_to) == 0)) {
transfer(_to, _amountArray[i]);
}
}
}
}
/**
* @title The Sapien Token.
*/
contract SapienToken is BatchToken {
string public constant name = "Sapien Network";
string public constant symbol = "SPN";
uint256 public constant decimals = 6;
string public constant website = "https://sapien.network";
/**
* @dev The maximum supply that can be minted, in microSPN.
* 500M with 6 decimals.
*/
uint256 public constant MAX_SUPPLY_USPN = 500 * 1000 * 1000 * (10**decimals);
function SapienToken() public {
// All initial tokens to owner
balances[msg.sender] = MAX_SUPPLY_USPN;
totalSupply_ = MAX_SUPPLY_USPN;
}
}
{
"compilationTarget": {
"SapienToken.sol": "SapienToken"
},
"libraries": {},
"optimizer": {
"enabled": false,
"runs": 0
},
"remappings": []
}
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