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| /** | |
| *Submitted for verification at Etherscan.io on 2018-06-29 | |
| */ | |
| pragma solidity ^0.4.16; | |
| contract owned { | |
| address public owner; | |
| function owned() public { | |
| owner = msg.sender; | |
| } | |
| modifier onlyOwner { | |
| require(msg.sender == owner); | |
| _; | |
| } | |
| function transferOwnership(address newOwner) onlyOwner public { | |
| owner = newOwner; | |
| } | |
| } | |
| interface tokenRecipient { function receiveApproval(address _from, uint256 _value, address _token, bytes _extraData) external; } | |
| contract TokenERC20 { | |
| // Public variables of the token | |
| string public name; | |
| string public symbol; | |
| uint8 public decimals = 18; | |
| // 18 decimals is the strongly suggested default, avoid changing it | |
| uint256 public totalSupply; | |
| uint256 initialSupply=5000000000; | |
| string tokenName='FIB'; | |
| string tokenSymbol='FIB'; | |
| // 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); | |
| /** | |
| * Constrctor function | |
| * | |
| * Initializes contract with initial supply tokens to the creator of the contract | |
| */ | |
| function TokenERC20( | |
| ) 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); | |
| // Check if the sender has enough | |
| require(balanceOf[_from] >= _value); | |
| // Check for overflows | |
| require(balanceOf[_to] + _value > balanceOf[_to]); | |
| // Save this for an assertion in the future | |
| uint previousBalances = balanceOf[_from] + balanceOf[_to]; | |
| // Subtract from the sender | |
| balanceOf[_from] -= _value; | |
| // Add the same to the recipient | |
| balanceOf[_to] += _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] + 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) { | |
| require(_value <= allowance[_from][msg.sender]); // Check allowance | |
| allowance[_from][msg.sender] -= _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; | |
| return true; | |
| } | |
| /** | |
| * Set allowance for other address and notify | |
| * | |
| * Allows `_spender` to spend no more than `_value` tokens in your behalf, and then ping the contract about it | |
| * | |
| * @param _spender The address authorized to spend | |
| * @param _value the max amount they can spend | |
| * @param _extraData some extra information to send to the approved contract | |
| */ | |
| function approveAndCall(address _spender, uint256 _value, bytes _extraData) | |
| public | |
| returns (bool success) { | |
| tokenRecipient spender = tokenRecipient(_spender); | |
| if (approve(_spender, _value)) { | |
| spender.receiveApproval(msg.sender, _value, this, _extraData); | |
| 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) { | |
| require(balanceOf[msg.sender] >= _value); // Check if the sender has enough | |
| balanceOf[msg.sender] -= _value; // Subtract from the sender | |
| totalSupply -= _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] -= _value; // Subtract from the targeted balance | |
| allowance[_from][msg.sender] -= _value; // Subtract from the sender's allowance | |
| totalSupply -= _value; // Update totalSupply | |
| emit Burn(_from, _value); | |
| return true; | |
| } | |
| } | |
| /******************************************/ | |
| /* ADVANCED TOKEN STARTS HERE */ | |
| /******************************************/ | |
| contract FIBToken is owned, TokenERC20 { | |
| uint256 public sellPrice; | |
| uint256 public buyPrice; | |
| mapping (address => bool) public frozenAccount; | |
| /* This generates a public event on the blockchain that will notify clients */ | |
| event FrozenFunds(address target, bool frozen); | |
| /* Initializes contract with initial supply tokens to the creator of the contract */ | |
| function FIBToken( | |
| ) TokenERC20() public {} | |
| /* Internal transfer, only can be called by this contract */ | |
| function _transfer(address _from, address _to, uint _value) internal { | |
| require (_to != 0x0); // Prevent transfer to 0x0 address. Use burn() instead | |
| require (balanceOf[_from] >= _value); // Check if the sender has enough | |
| require (balanceOf[_to] + _value >= balanceOf[_to]); // Check for overflows | |
| require(!frozenAccount[_from]); // Check if sender is frozen | |
| require(!frozenAccount[_to]); // Check if recipient is frozen | |
| balanceOf[_from] -= _value; // Subtract from the sender | |
| balanceOf[_to] += _value; // Add the same to the recipient | |
| emit Transfer(_from, _to, _value); | |
| } | |
| /// @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 { | |
| balanceOf[target] += mintedAmount; | |
| totalSupply += mintedAmount; | |
| 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); | |
| } | |
| } |