Contract Source Code:
File 1 of 1 : DBToken
pragma solidity ^0.4.24;
library SafeMath {
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a==0) {
return 0;
}
uint c = a * b;
require(c / a == b);
return c;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0);
uint256 c = a / b;
return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
require(b <= a);
return a - b;
}
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a);
return c;
}
}
contract owned {
address public owner;
constructor() public {
owner = msg.sender;
}
modifier onlyOwner {
require(msg.sender == owner);
_;
}
function transferOwnership(address newOwner) onlyOwner public {
owner = newOwner;
}
}
contract DBTBase {
using SafeMath for uint256;
// Public variables of the token
string public name;
string public symbol;
uint8 public decimals = 12;
// 18 decimals is the strongly suggested default, avoid changing it
uint256 public totalSupply;
// This creates an array with all balances
mapping (address => uint256) public balanceOf;
mapping (address => mapping (address => uint256)) public allowance;
// This generates a public event on the blockchain that will notify clients
event Transfer(address indexed from, address indexed to, uint256 value);
// This notifies clients about the amount burnt
event Burn(address indexed from, uint256 value);
event Approved(address indexed from,address spender, uint256 value);
/**
* Constrctor function
*
* Initializes contract with initial supply tokens to the creator of the contract
*/
constructor(
uint256 initialSupply,
string tokenName,
string tokenSymbol
) public {
totalSupply = initialSupply * 10 ** uint256(decimals); // Update total supply with the decimal amount
balanceOf[msg.sender] = totalSupply; // Give the creator all initial tokens
name = tokenName; // Set the name for display purposes
symbol = tokenSymbol; // Set the symbol for display purposes
}
/**
* Internal transfer, only can be called by this contract
*/
function _transfer(address _from, address _to, uint _value) internal {
// Prevent transfer to 0x0 address. Use burn() instead
require(_to != 0x0);
// Save this for an assertion in the future
uint previousBalances = balanceOf[_from].add(balanceOf[_to]);
// Subtract from the sender
balanceOf[_from] = balanceOf[_from].sub(_value);
// Add the same to the recipient
balanceOf[_to] = balanceOf[_to].add(_value);
emit Transfer(_from, _to, _value);
// Asserts are used to use static analysis to find bugs in your code. They should never fail
assert(balanceOf[_from].add(balanceOf[_to]) == previousBalances);
}
/**
* Transfer tokens
*
* Send `_value` tokens to `_to` from your account
*
* @param _to The address of the recipient
* @param _value the amount to send
*/
function transfer(address _to, uint256 _value) public {
_transfer(msg.sender, _to, _value);
}
/**
* Transfer tokens from other address
*
* Send `_value` tokens to `_to` in behalf of `_from`
*
* @param _from The address of the sender
* @param _to The address of the recipient
* @param _value the amount to send
*/
function transferFrom(address _from, address _to, uint256 _value) public returns (bool success) {
allowance[_from][msg.sender] = allowance[_from][msg.sender].sub(_value);
_transfer(_from, _to, _value);
return true;
}
/**
* Set allowance for other address
*
* Allows `_spender` to spend no more than `_value` tokens in your behalf
*
* @param _spender The address authorized to spend
* @param _value the max amount they can spend
*/
function approve(address _spender, uint256 _value) public
returns (bool success) {
allowance[msg.sender][_spender] = _value;
emit Approved(msg.sender,_spender,_value);
return true;
}
/**
* Destroy tokens
*
* Remove `_value` tokens from the system irreversibly
*
* @param _value the amount of money to burn
*/
function burn(uint256 _value) public returns (bool success) {
balanceOf[msg.sender] = balanceOf[msg.sender].sub(_value); // Subtract from the sender
totalSupply = totalSupply.sub(_value); // Updates totalSupply
emit Burn(msg.sender, _value);
return true;
}
/**
* Destroy tokens from other account
*
* Remove `_value` tokens from the system irreversibly on behalf of `_from`.
*
* @param _from the address of the sender
* @param _value the amount of money to burn
*/
function burnFrom(address _from, uint256 _value) public returns (bool success) {
require(balanceOf[_from] >= _value); // Check if the targeted balance is enough
require(_value <= allowance[_from][msg.sender]); // Check allowance
balanceOf[_from] = balanceOf[_from].sub(_value); // Subtract from the targeted balance
allowance[_from][msg.sender] = allowance[_from][msg.sender].sub(_value); // Subtract from the sender's allowance
totalSupply = totalSupply.sub(_value); // Update totalSupply
emit Burn(_from, _value);
return true;
}
}
/******************************************/
/* ADVANCED TOKEN STARTS HERE */
/******************************************/
contract DBToken is owned, DBTBase {
/* Lock allcoins */
mapping (address => bool) public frozenAccount;
/* Lock specified number of coins */
mapping (address => uint256) public balancefrozen;
/*Lock acccout with time and value */
mapping (address => uint256[][]) public frozeTimeValue;
/* Locked total with time and value*/
mapping (address => uint256) public balancefrozenTime;
bool public isPausedTransfer = false;
/* This generates a public event on the blockchain that will notify clients */
event FrozenFunds(address target, bool frozen);
event FronzeValue(address target,uint256 value);
event FronzeTimeValue(address target,uint256 value);
event PauseChanged(bool ispause);
/* Initializes contract with initial supply tokens to the creator of the contract */
constructor(
uint256 initialSupply,
string tokenName,
string tokenSymbol
) DBTBase(initialSupply, tokenName, tokenSymbol) public {
}
/* Internal transfer, only can be called by this contract */
function _transfer(address _from, address _to, uint _value) internal {
require(!isPausedTransfer);
require (_to != 0x0); // Prevent transfer to 0x0 address. Use burn() instead
require(balanceOf[_from]>=_value);
require(!frozenAccount[_from]); // Check if sender is frozen
require(!frozenAccount[_to]); // Check if recipient is frozen
//Check FronzenValue
require(balanceOf[_from].sub(_value)>=balancefrozen[_from]);
require(accountNoneFrozenAvailable(_from) >=_value);
balanceOf[_from] = balanceOf[_from].sub(_value); // Subtract from the sender
balanceOf[_to] = balanceOf[_to].add(_value); // Add the same to the recipient
emit Transfer(_from, _to, _value);
}
function pauseTransfer(bool ispause) onlyOwner public {
isPausedTransfer = ispause;
emit PauseChanged(ispause);
}
/// @notice Create `mintedAmount` tokens and send it to `target`
/// @param target Address to receive the tokens
/// @param mintedAmount the amount of tokens it will receive
function mintToken(address target, uint256 mintedAmount) onlyOwner public {
uint256 newmint=mintedAmount.mul(10 ** uint256(decimals));
balanceOf[target] = balanceOf[target].add(newmint);
totalSupply = totalSupply.add(newmint);
emit Transfer(0, this, mintedAmount);
emit Transfer(this, target, mintedAmount);
}
/// @notice `freeze? Prevent | Allow` `target` from sending & receiving tokens
/// @param target Address to be frozen
/// @param freeze either to freeze it or not
function freezeAccount(address target, bool freeze) onlyOwner public {
frozenAccount[target] = freeze;
emit FrozenFunds(target, freeze);
}
function freezeAccountTimeAndValue(address target, uint256[] times, uint256[] values) onlyOwner public {
require(times.length >=1 );
require(times.length == values.length);
require(times.length<=10);
uint256[2][] memory timevalue=new uint256[2][](10);
uint256 lockedtotal=0;
for(uint i=0;i<times.length;i++)
{
uint256 value=values[i].mul(10 ** uint256(decimals));
timevalue[i]=[times[i],value];
lockedtotal=lockedtotal.add(value);
}
frozeTimeValue[target] = timevalue;
balancefrozenTime[target]=lockedtotal;
emit FronzeTimeValue(target,lockedtotal);
}
function unfreezeAccountTimeAndValue(address target) onlyOwner public {
uint256[][] memory lockedTimeAndValue=frozeTimeValue[target];
if(lockedTimeAndValue.length>0)
{
delete frozeTimeValue[target];
}
balancefrozenTime[target]=0;
}
function freezeByValue(address target,uint256 value) public onlyOwner {
balancefrozen[target]=value.mul(10 ** uint256(decimals));
emit FronzeValue(target,value);
}
function increaseFreezeValue(address target,uint256 value) onlyOwner public {
balancefrozen[target]= balancefrozen[target].add(value.mul(10 ** uint256(decimals)));
emit FronzeValue(target,value);
}
function decreaseFreezeValue(address target,uint256 value) onlyOwner public {
uint oldValue = balancefrozen[target];
uint newvalue=value.mul(10 ** uint256(decimals));
if (newvalue >= oldValue) {
balancefrozen[target] = 0;
} else {
balancefrozen[target] = oldValue.sub(newvalue);
}
emit FronzeValue(target,value);
}
function accountNoneFrozenAvailable(address target) public returns (uint256) {
uint256[][] memory lockedTimeAndValue=frozeTimeValue[target];
uint256 avail=0;
if(lockedTimeAndValue.length>0)
{
uint256 unlockedTotal=0;
uint256 now1 = block.timestamp;
uint256 lockedTotal=0;
for(uint i=0;i<lockedTimeAndValue.length;i++)
{
uint256 unlockTime = lockedTimeAndValue[i][0];
uint256 unlockvalue=lockedTimeAndValue[i][1];
if(now1>=unlockTime && unlockvalue>0)
{
unlockedTotal=unlockedTotal.add(unlockvalue);
}
if(unlockvalue>0)
{
lockedTotal=lockedTotal.add(unlockvalue);
}
}
//checkunlockvalue
if(lockedTotal > unlockedTotal)
{
balancefrozenTime[target]=lockedTotal.sub(unlockedTotal);
}
else
{
balancefrozenTime[target]=0;
}
if(balancefrozenTime[target]==0)
{
delete frozeTimeValue[target];
}
if(balanceOf[target]>balancefrozenTime[target])
{
avail=balanceOf[target].sub(balancefrozenTime[target]);
}
else
{
avail=0;
}
}
else
{
avail=balanceOf[target];
}
return avail ;
}
}