add legacy contracts

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Ricardo Guilherme Schmidt 2023-06-28 14:29:01 -03:00
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// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.4.20;
/// @dev `Owned` is a base level contract that assigns an `owner` that can be
/// later changed
contract Owned {
/// @dev `owner` is the only address that can call a function with this
/// modifier
modifier onlyOwner() {
require(msg.sender == owner);
_;
}
address public owner;
/// @notice The Constructor assigns the message sender to be `owner`
constructor() {
owner = msg.sender;
}
address public newOwner;
/// @notice `owner` can step down and assign some other address to this role
/// @param _newOwner The address of the new owner. 0x0 can be used to create
/// an unowned neutral vault, however that cannot be undone
function changeOwner(address _newOwner) external onlyOwner {
newOwner = _newOwner;
}
function acceptOwnership() external {
if (msg.sender == newOwner) {
owner = newOwner;
}
}
}

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// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.4.20;
import "./SNTPlaceHolder.sol";
contract SNTFaucet is SNTPlaceHolder {
bool public open = true;
constructor(address _owner, address payable _snt) SNTPlaceHolder(_owner, _snt) {
}
fallback() external {
generateTokens(msg.sender, 1000* (10 ** uint(snt.decimals())));
}
function mint(uint256 _amount) external {
require(open);
generateTokens(msg.sender, _amount);
}
function setOpen(bool _open) external onlyOwner {
open = _open;
}
function destroyTokens(address _who, uint _amount) onlyOwner public {
snt.destroyTokens(_who, _amount);
}
function generateTokens(address _who, uint _amount) public {
require(msg.sender == owner || open);
snt.generateTokens(_who, _amount);
}
}

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// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.4.20;
import "./token/TokenController.sol";
import "./token/MiniMeToken.sol";
import "./SafeMath.sol";
import "./Owned.sol";
/*
Copyright 2017, Jordi Baylina
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/// @title SNTPlaceholder Contract
/// @author Jordi Baylina
/// @dev The SNTPlaceholder contract will take control over the SNT after the contribution
/// is finalized and before the Status Network is deployed.
/// The contract allows for SNT transfers and transferFrom and implements the
/// logic for transferring control of the token to the network when the offering
/// asks it to do so.
contract SNTPlaceHolder is TokenController, Owned {
using SafeMath for uint256;
MiniMeToken public immutable snt;
constructor(address _owner, address payable _snt) {
owner = _owner;
snt = MiniMeToken(_snt);
}
/// @notice The owner of this contract can change the controller of the SNT token
/// Please, be sure that the owner is a trusted agent or 0x0 address.
/// @param _newController The address of the new controller
function changeController(address _newController) public onlyOwner {
snt.changeController(_newController);
emit ControllerChanged(_newController);
}
//////////
// MiniMe Controller Interface functions
//////////
// In between the offering and the network. Default settings for allowing token transfers.
function proxyPayment(address) override public payable returns (bool) {
return false;
}
function onTransfer(address, address, uint256) override public pure returns (bool) {
return true;
}
function onApprove(address, address, uint256) override public pure returns (bool) {
return true;
}
event ClaimedTokens(address indexed _token, address indexed _controller, uint256 _amount);
event ControllerChanged(address indexed _newController);
}

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// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.4.20;
/**
* Math operations with safety checks
*/
library SafeMath {
function mul(uint a, uint b) internal pure returns (uint) {
uint c = a * b;
assert(a == 0 || c / a == b);
return c;
}
function div(uint a, uint b) internal pure returns (uint) {
// assert(b > 0); // Solidity automatically throws when dividing by 0
uint c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
function sub(uint a, uint b) internal pure returns (uint) {
assert(b <= a);
return a - b;
}
function add(uint a, uint b) internal pure returns (uint) {
uint c = a + b;
assert(c >= a);
return c;
}
function max64(uint64 a, uint64 b) internal pure returns (uint64) {
return a >= b ? a : b;
}
function min64(uint64 a, uint64 b) internal pure returns (uint64) {
return a < b ? a : b;
}
function max256(uint256 a, uint256 b) internal pure returns (uint256) {
return a >= b ? a : b;
}
function min256(uint256 a, uint256 b) internal pure returns (uint256) {
return a < b ? a : b;
}
}

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// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.4.20;
abstract contract ApproveAndCallFallBack {
function receiveApproval(address from, uint256 _amount, address _token, bytes memory _data) virtual public;
}

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// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.4.20;
contract Controlled {
string internal constant ERR_BAD_PARAMETER = "Bad parameter";
string internal constant ERR_UNAUTHORIZED = "Unauthorized";
event NewController(address controller);
/// @notice The address of the controller is the only address that can call
/// a function with this modifier
modifier onlyController {
require(msg.sender == controller, "Unauthorized");
_;
}
address public controller;
constructor(address _initController) {
require(_initController != address(0), ERR_BAD_PARAMETER);
controller = _initController;
}
/// @notice Changes the controller of the contract
/// @param _newController The new controller of the contract
function changeController(address _newController) public onlyController {
controller = _newController;
emit NewController(_newController);
}
}

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// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.4.20;
/*
Copyright 2016, Jordi Baylina
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @title MiniMeToken Contract
* @author Jordi Baylina
* @dev This token contract's goal is to make it easy for anyone to clone this
* token using the token distribution at a given block, this will allow DAO's
* and DApps to upgrade their features in a decentralized manner without
* affecting the original token
* @dev It is ERC20 compliant, but still needs to under go further testing.
*/
import "./Controlled.sol";
import "./TokenController.sol";
import "./ApproveAndCallFallBack.sol";
import "./MiniMeTokenFactory.sol";
/**
* @dev The actual token contract, the default controller is the msg.sender
* that deploys the contract, so usually this token will be deployed by a
* token controller contract, which Giveth will call a "Campaign"
*/
contract MiniMeToken is Controlled {
string public name; //The Token's name: e.g. DigixDAO Tokens
uint8 public immutable decimals; //Number of decimals of the smallest unit
string public symbol; //An identifier: e.g. REP
string public constant version = "MMT_0.1"; //An arbitrary versioning scheme
/**
* @dev `Checkpoint` is the structure that attaches a block number to a
* given value, the block number attached is the one that last changed the
* value
*/
struct Checkpoint {
// `fromBlock` is the block number that the value was generated from
uint128 fromBlock;
// `value` is the amount of tokens at a specific block number
uint128 value;
}
// `parentToken` is the Token address that was cloned to produce this token;
// it will be 0x0 for a token that was not cloned
MiniMeToken public immutable parentToken;
// `parentSnapShotBlock` is the block number from the Parent Token that was
// used to determine the initial distribution of the Clone Token
uint public immutable parentSnapShotBlock;
// `creationBlock` is the block number that the Clone Token was created
uint public immutable creationBlock;
// `balances` is the map that tracks the balance of each address, in this
// contract when the balance changes the block number that the change
// occurred is also included in the map
mapping (address => Checkpoint[]) balances;
// `allowed` tracks any extra transfer rights as in all ERC20 tokens
mapping (address => mapping (address => uint256)) allowed;
// Tracks the history of the `totalSupply` of the token
Checkpoint[] totalSupplyHistory;
// Flag that determines if the token is transferable or not.
bool public transfersEnabled;
// The factory used to create new clone tokens
MiniMeTokenFactory public immutable tokenFactory;
////////////////
// Constructor
////////////////
/**
* @notice Constructor to create a MiniMeToken
* @param _tokenFactory The address of the MiniMeTokenFactory contract that
* will create the Clone token contracts, the token factory needs to be
* deployed first
* @param _parentToken Address of the parent token, set to 0x0 if it is a
* new token
* @param _parentSnapShotBlock Block of the parent token that will
* determine the initial distribution of the clone token, set to 0 if it
* is a new token
* @param _tokenName Name of the new token
* @param _decimalUnits Number of decimals of the new token
* @param _tokenSymbol Token Symbol for the new token
* @param _transfersEnabled If true, tokens will be able to be transferred
*/
constructor(
address _tokenFactory,
address payable _parentToken,
uint _parentSnapShotBlock,
string memory _tokenName,
uint8 _decimalUnits,
string memory _tokenSymbol,
bool _transfersEnabled
)
Controlled(msg.sender)
{
tokenFactory = MiniMeTokenFactory(_tokenFactory);
name = _tokenName; // Set the name
decimals = _decimalUnits; // Set the decimals
symbol = _tokenSymbol; // Set the symbol
parentToken = MiniMeToken(_parentToken);
parentSnapShotBlock = _parentSnapShotBlock;
transfersEnabled = _transfersEnabled;
creationBlock = block.number;
}
///////////////////
// ERC20 Methods
///////////////////
/**
* @notice Send `_amount` tokens to `_to` from `msg.sender`
* @param _to The address of the recipient
* @param _amount The amount of tokens to be transferred
* @return success Whether the transfer was successful or not
*/
function transfer(address _to, uint256 _amount) public returns (bool success) {
require(transfersEnabled, "Transfers disabled");
return doTransfer(msg.sender, _to, _amount);
}
/**
* @notice Send `_amount` tokens to `_to` from `_from` on the condition it
* is approved by `_from`
* @param _from The address holding the tokens being transferred
* @param _to The address of the recipient
* @param _amount The amount of tokens to be transferred
* @return success True if the transfer was successful
*/
function transferFrom(
address _from,
address _to,
uint256 _amount
)
public
returns (bool success)
{
// The controller of this contract can move tokens around at will,
// this is important to recognize! Confirm that you trust the
// controller of this contract, which in most situations should be
// another open source smart contract or 0x0
if (msg.sender != controller) {
require(transfersEnabled, "Transfers disabled");
// The standard ERC 20 transferFrom functionality
if (allowed[_from][msg.sender] < _amount) {
return false;
}
allowed[_from][msg.sender] -= _amount;
}
return doTransfer(_from, _to, _amount);
}
/**
* @dev This is the actual transfer function in the token contract, it can
* only be called by other functions in this contract.
* @param _from The address holding the tokens being transferred
* @param _to The address of the recipient
* @param _amount The amount of tokens to be transferred
* @return True if the transfer was successful
*/
function doTransfer(
address _from,
address _to,
uint _amount
)
internal
returns(bool)
{
if (_amount == 0) {
return true;
}
require(parentSnapShotBlock < block.number, "Invalid block.number");
// Do not allow transfer to 0x0 or the token contract itself
require((_to != address(0)) && (_to != address(this)), "Invalid _to");
// If the amount being transfered is more than the balance of the
// account the transfer returns false
uint256 previousBalanceFrom = balanceOfAt(_from, block.number);
if (previousBalanceFrom < _amount) {
return false;
}
// Alerts the token controller of the transfer
if (isContract(controller)) {
require(TokenController(controller).onTransfer(_from, _to, _amount), "Unauthorized transfer");
}
// First update the balance array with the new value for the address
// sending the tokens
updateValueAtNow(balances[_from], previousBalanceFrom - _amount);
// Then update the balance array with the new value for the address
// receiving the tokens
uint256 previousBalanceTo = balanceOfAt(_to, block.number);
require(previousBalanceTo + _amount >= previousBalanceTo, "Balance overflow"); // Check for overflow
updateValueAtNow(balances[_to], previousBalanceTo + _amount);
// An event to make the transfer easy to find on the blockchain
emit Transfer(_from, _to, _amount);
return true;
}
function doApprove(
address _from,
address _spender,
uint256 _amount
)
internal
returns (bool)
{
require(transfersEnabled, "Transfers disabled");
// To change the approve amount you first have to reduce the addresses`
// allowance to zero by calling `approve(_spender,0)` if it is not
// already 0 to mitigate the race condition described here:
// https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
require((_amount == 0) || (allowed[_from][_spender] == 0), "Reset allowance first");
// Alerts the token controller of the approve function call
if (isContract(controller)) {
require(TokenController(controller).onApprove(_from, _spender, _amount), "Unauthorized approve");
}
allowed[_from][_spender] = _amount;
emit Approval(_from, _spender, _amount);
return true;
}
/**
* @param _owner The address that's balance is being requested
* @return balance The balance of `_owner` at the current block
*/
function balanceOf(address _owner) external view returns (uint256 balance) {
return balanceOfAt(_owner, block.number);
}
/**
* @notice `msg.sender` approves `_spender` to spend `_amount` tokens on
* its behalf. This is a modified version of the ERC20 approve function
* to be a little bit safer
* @param _spender The address of the account able to transfer the tokens
* @param _amount The amount of tokens to be approved for transfer
* @return success True if the approval was successful
*/
function approve(address _spender, uint256 _amount) external returns (bool success) {
return doApprove(msg.sender, _spender, _amount);
}
/**
* @dev This function makes it easy to read the `allowed[]` map
* @param _owner The address of the account that owns the token
* @param _spender The address of the account able to transfer the tokens
* @return remaining Amount of remaining tokens of _owner that _spender is allowed
* to spend
*/
function allowance(
address _owner,
address _spender
)
external
view
returns (uint256 remaining)
{
return allowed[_owner][_spender];
}
/**
* @notice `msg.sender` approves `_spender` to send `_amount` tokens on
* its behalf, and then a function is triggered in the contract that is
* being approved, `_spender`. This allows users to use their tokens to
* interact with contracts in one function call instead of two
* @param _spender The address of the contract able to transfer the tokens
* @param _amount The amount of tokens to be approved for transfer
* @return success True if the function call was successful
*/
function approveAndCall(
address _spender,
uint256 _amount,
bytes memory _extraData
)
public
returns (bool success)
{
require(doApprove(msg.sender, _spender, _amount), "Approve failed");
ApproveAndCallFallBack(_spender).receiveApproval(
msg.sender,
_amount,
address(this),
_extraData
);
return true;
}
/**
* @dev This function makes it easy to get the total number of tokens
* @return The total number of tokens
*/
function totalSupply() external view returns (uint) {
return totalSupplyAt(block.number);
}
////////////////
// Query balance and totalSupply in History
////////////////
/**
* @dev Queries the balance of `_owner` at a specific `_blockNumber`
* @param _owner The address from which the balance will be retrieved
* @param _blockNumber The block number when the balance is queried
* @return The balance at `_blockNumber`
*/
function balanceOfAt(
address _owner,
uint _blockNumber
)
public
view
returns (uint)
{
// These next few lines are used when the balance of the token is
// requested before a check point was ever created for this token, it
// requires that the `parentToken.balanceOfAt` be queried at the
// genesis block for that token as this contains initial balance of
// this token
if ((balances[_owner].length == 0) || (balances[_owner][0].fromBlock > _blockNumber)) {
if (address(parentToken) != address(0)) {
return parentToken.balanceOfAt(_owner, min(_blockNumber, parentSnapShotBlock));
} else {
// Has no parent
return 0;
}
// This will return the expected balance during normal situations
} else {
return getValueAt(balances[_owner], _blockNumber);
}
}
/**
* @notice Total amount of tokens at a specific `_blockNumber`.
* @param _blockNumber The block number when the totalSupply is queried
* @return The total amount of tokens at `_blockNumber`
*/
function totalSupplyAt(uint _blockNumber) public view returns(uint) {
// These next few lines are used when the totalSupply of the token is
// requested before a check point was ever created for this token, it
// requires that the `parentToken.totalSupplyAt` be queried at the
// genesis block for this token as that contains totalSupply of this
// token at this block number.
if ((totalSupplyHistory.length == 0) || (totalSupplyHistory[0].fromBlock > _blockNumber)) {
if (address(parentToken) != address(0)) {
return parentToken.totalSupplyAt(min(_blockNumber, parentSnapShotBlock));
} else {
return 0;
}
// This will return the expected totalSupply during normal situations
} else {
return getValueAt(totalSupplyHistory, _blockNumber);
}
}
////////////////
// Clone Token Method
////////////////
/**
* @notice Creates a new clone token with the initial distribution being
* this token at `snapshotBlock`
* @param _cloneTokenName Name of the clone token
* @param _cloneDecimalUnits Number of decimals of the smallest unit
* @param _cloneTokenSymbol Symbol of the clone token
* @param _snapshotBlock Block when the distribution of the parent token is
* copied to set the initial distribution of the new clone token;
* if the block is zero than the actual block, the current block is used
* @param _transfersEnabled True if transfers are allowed in the clone
* @return The address of the new MiniMeToken Contract
*/
function createCloneToken(
string memory _cloneTokenName,
uint8 _cloneDecimalUnits,
string memory _cloneTokenSymbol,
uint _snapshotBlock,
bool _transfersEnabled
)
public
returns(address)
{
uint snapshotBlock = _snapshotBlock;
if (snapshotBlock == 0) {
snapshotBlock = block.number;
}
MiniMeToken cloneToken = tokenFactory.createCloneToken(
payable(this),
snapshotBlock,
_cloneTokenName,
_cloneDecimalUnits,
_cloneTokenSymbol,
_transfersEnabled
);
cloneToken.changeController(msg.sender);
// An event to make the token easy to find on the blockchain
emit NewCloneToken(address(cloneToken), snapshotBlock);
return address(cloneToken);
}
////////////////
// Generate and destroy tokens
////////////////
/**
* @notice Generates `_amount` tokens that are assigned to `_owner`
* @param _owner The address that will be assigned the new tokens
* @param _amount The quantity of tokens generated
* @return True if the tokens are generated correctly
*/
function generateTokens(
address _owner,
uint _amount
)
public
onlyController
returns (bool)
{
uint curTotalSupply = totalSupplyAt(block.number);
require(curTotalSupply + _amount >= curTotalSupply, "Total overflow"); // Check for overflow
uint previousBalanceTo = balanceOfAt(_owner, block.number);
require(previousBalanceTo + _amount >= previousBalanceTo, "Balance overflow"); // Check for overflow
updateValueAtNow(totalSupplyHistory, curTotalSupply + _amount);
updateValueAtNow(balances[_owner], previousBalanceTo + _amount);
emit Transfer(address(0), _owner, _amount);
return true;
}
/**
* @notice Burns `_amount` tokens from `_owner`
* @param _owner The address that will lose the tokens
* @param _amount The quantity of tokens to burn
* @return True if the tokens are burned correctly
*/
function destroyTokens(
address _owner,
uint _amount
)
public
onlyController
returns (bool)
{
uint curTotalSupply = totalSupplyAt(block.number);
require(curTotalSupply >= _amount, "No enough supply");
uint previousBalanceFrom = balanceOfAt(_owner, block.number);
require(previousBalanceFrom >= _amount, "No enough balance");
updateValueAtNow(totalSupplyHistory, curTotalSupply - _amount);
updateValueAtNow(balances[_owner], previousBalanceFrom - _amount);
emit Transfer(_owner, address(0), _amount);
return true;
}
////////////////
// Enable tokens transfers
////////////////
/**
* @notice Enables token holders to transfer their tokens freely if true
* @param _transfersEnabled True if transfers are allowed in the clone
*/
function enableTransfers(bool _transfersEnabled) public onlyController {
transfersEnabled = _transfersEnabled;
}
////////////////
// Internal helper functions to query and set a value in a snapshot array
////////////////
/**
* @dev `getValueAt` retrieves the number of tokens at a given block number
* @param checkpoints The history of values being queried
* @param _block The block number to retrieve the value at
* @return The number of tokens being queried
*/
function getValueAt(
Checkpoint[] storage checkpoints,
uint _block
)
internal
view
returns (uint)
{
if (checkpoints.length == 0) {
return 0;
}
// Shortcut for the actual value
if (_block >= checkpoints[checkpoints.length-1].fromBlock) {
return checkpoints[checkpoints.length-1].value;
}
if (_block < checkpoints[0].fromBlock) {
return 0;
}
// Binary search of the value in the array
uint _min = 0;
uint max = checkpoints.length-1;
while (max > _min) {
uint mid = (max + _min + 1) / 2;
if (checkpoints[mid].fromBlock<=_block) {
_min = mid;
} else {
max = mid-1;
}
}
return checkpoints[_min].value;
}
/**
* @dev `updateValueAtNow` used to update the `balances` map and the
* `totalSupplyHistory`
* @param checkpoints The history of data being updated
* @param _value The new number of tokens
*/
function updateValueAtNow(Checkpoint[] storage checkpoints, uint _value) internal {
if ((checkpoints.length == 0) || (checkpoints[checkpoints.length -1].fromBlock < block.number)) {
Checkpoint storage newCheckPoint = checkpoints.push();
newCheckPoint.fromBlock = uint128(block.number);
newCheckPoint.value = uint128(_value);
} else {
Checkpoint storage oldCheckPoint = checkpoints[checkpoints.length-1];
oldCheckPoint.value = uint128(_value);
}
}
/**
* @dev Internal function to determine if an address is a contract
* @param _addr The address being queried
* @return True if `_addr` is a contract
*/
function isContract(address _addr) internal view returns(bool) {
uint size;
if (_addr == address(0)){
return false;
}
assembly {
size := extcodesize(_addr)
}
return size>0;
}
/**
* @dev Helper function to return a min betwen the two uints
*/
function min(uint a, uint b) internal pure returns (uint) {
return a < b ? a : b;
}
/**
* @notice The fallback function: If the contract's controller has not been
* set to 0, then the `proxyPayment` method is called which relays the
* ether and creates tokens as described in the token controller contract
*/
receive() payable external {
require(isContract(controller), "Deposit unallowed");
require(TokenController(controller).proxyPayment{value: msg.value}(msg.sender), "Deposit denied");
}
//////////
// Safety Methods
//////////
/**
* @notice This method can be used by the controller to extract mistakenly
* sent tokens to this contract.
* @param _token The address of the token contract that you want to recover
* set to 0 in case you want to extract ether.
*/
function claimTokens(address payable _token) public onlyController {
if (_token == address(0)) {
payable(controller).transfer(address(this).balance);
return;
}
MiniMeToken token = MiniMeToken(_token);
uint balance = token.balanceOf(address(this));
token.transfer(controller, balance);
emit ClaimedTokens(_token, controller, balance);
}
////////////////
// Events
////////////////
event ClaimedTokens(address indexed _token, address indexed _controller, uint _amount);
event Transfer(address indexed _from, address indexed _to, uint256 _amount);
event NewCloneToken(address indexed _cloneToken, uint snapshotBlock);
event Approval(
address indexed _owner,
address indexed _spender,
uint256 _amount
);
}

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// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.4.20;
import "./MiniMeToken.sol";
////////////////
// MiniMeTokenFactory
////////////////
/**
* @dev This contract is used to generate clone contracts from a contract.
* In solidity this is the way to create a contract from a contract of the
* same class
*/
contract MiniMeTokenFactory {
/**
* @notice Update the DApp by creating a new token with new functionalities
* the msg.sender becomes the controller of this clone token
* @param _parentToken Address of the token being cloned
* @param _snapshotBlock Block of the parent token that will
* determine the initial distribution of the clone token
* @param _tokenName Name of the new token
* @param _decimalUnits Number of decimals of the new token
* @param _tokenSymbol Token Symbol for the new token
* @param _transfersEnabled If true, tokens will be able to be transferred
* @return The address of the new token contract
*/
function createCloneToken(
address payable _parentToken,
uint _snapshotBlock,
string memory _tokenName,
uint8 _decimalUnits,
string memory _tokenSymbol,
bool _transfersEnabled
) public returns (MiniMeToken) {
MiniMeToken newToken = new MiniMeToken(
address(this),
_parentToken,
_snapshotBlock,
_tokenName,
_decimalUnits,
_tokenSymbol,
_transfersEnabled
);
newToken.changeController(msg.sender);
return newToken;
}
}

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@ -0,0 +1,34 @@
// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.4.20;
/**
* @dev The token controller contract must implement these functions
*/
interface TokenController {
/**
* @notice Called when `_owner` sends ether to the MiniMe Token contract
* @param _owner The address that sent the ether to create tokens
* @return True if the ether is accepted, false if it throws
*/
function proxyPayment(address _owner) external payable returns(bool);
/**
* @notice Notifies the controller about a token transfer allowing the
* controller to react if desired
* @param _from The origin of the transfer
* @param _to The destination of the transfer
* @param _amount The amount of the transfer
* @return False if the controller does not authorize the transfer
*/
function onTransfer(address _from, address _to, uint _amount) external returns(bool);
/**
* @notice Notifies the controller about an approval allowing the
* controller to react if desired
* @param _owner The address that calls `approve()`
* @param _spender The spender in the `approve()` call
* @param _amount The amount in the `approve()` call
* @return False if the controller does not authorize the approval
*/
function onApprove(address _owner, address _spender, uint _amount) external
returns(bool);
}