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pragma solidity ^0.4.11;
contract abstractModuleHandler {
function transfer(address from, address to, uint256 value, bool fee) external returns (bool success) {}
function balanceOf(address owner) public view returns (bool success, uint256 value) {}
}
contract module {
/*
Module
*/
enum status {
New,
Connected,
Disconnected,
Disabled
}
status public moduleStatus;
uint256 public disabledUntil;
address public moduleHandlerAddress;
function disableModule(bool forever) external onlyForModuleHandler returns (bool success) {
_disableModule(forever);
return true;
}
function _disableModule(bool forever) internal {
/*
Disable the module for one week, if the forever true then for forever.
This function calls the Publisher module.
@forever For forever or not
*/
if ( forever ) { moduleStatus = status.Disabled; }
else { disabledUntil = block.number + 5760; }
}
function replaceModuleHandler(address newModuleHandlerAddress) external onlyForModuleHandler returns (bool success) {
_replaceModuleHandler(newModuleHandlerAddress);
return true;
}
function _replaceModuleHandler(address newModuleHandlerAddress) internal {
/*
Replace the ModuleHandler address.
This function calls the Publisher module.
@newModuleHandlerAddress New module handler address
*/
require( moduleStatus == status.Connected );
moduleHandlerAddress = newModuleHandlerAddress;
}
function connectModule() external onlyForModuleHandler returns (bool success) {
_connectModule();
return true;
}
function _connectModule() internal {
/*
Registering and/or connecting-to ModuleHandler.
This function is called by ModuleHandler load or by Publisher.
*/
require( moduleStatus == status.New );
moduleStatus = status.Connected;
}
function disconnectModule() external onlyForModuleHandler returns (bool success) {
_disconnectModule();
return true;
}
function _disconnectModule() internal {
/*
Disconnect the module from the ModuleHandler.
This function calls the Publisher module.
*/
require( moduleStatus != status.New && moduleStatus != status.Disconnected );
moduleStatus = status.Disconnected;
}
function replaceModule(address newModuleAddress) external onlyForModuleHandler returns (bool success) {
_replaceModule(newModuleAddress);
return true;
}
function _replaceModule(address newModuleAddress) internal {
/*
Replace the module for an another new module.
This function calls the Publisher module.
We send every Token and ether to the new module.
@newModuleAddress New module handler address
*/
require( moduleStatus != status.New && moduleStatus != status.Disconnected);
(bool _success, uint256 _balance) = abstractModuleHandler(moduleHandlerAddress).balanceOf(address(this));
require( _success );
if ( _balance > 0 ) {
require( abstractModuleHandler(moduleHandlerAddress).transfer(address(this), newModuleAddress, _balance, false) );
}
if ( address(this).balance > 0 ) {
require( newModuleAddress.send(address(this).balance) );
}
moduleStatus = status.Disconnected;
}
function transferEvent(address from, address to, uint256 value) external onlyForModuleHandler returns (bool success) {
return true;
}
function newSchellingRoundEvent(uint256 roundID, uint256 reward) external onlyForModuleHandler returns (bool success) {
return true;
}
function registerModuleHandler(address _moduleHandlerAddress) internal {
/*
Module constructor function for registering ModuleHandler address.
*/
moduleHandlerAddress = _moduleHandlerAddress;
}
function isModuleHandler(address addr) internal returns (bool ret) {
/*
Test for ModuleHandler address.
If the module is not connected then returns always false.
@addr Address to check
@ret This is the module handler address or not
*/
if ( moduleHandlerAddress == address(0x00) ) { return true; }
if ( moduleStatus != status.Connected ) { return false; }
return addr == moduleHandlerAddress;
}
function isActive() public view returns (bool success, bool active) {
/*
Check self for ready for functions or not.
@success Function call was successful or not
@active Ready for functions or not
*/
return (true, moduleStatus == status.Connected && block.number >= disabledUntil);
}
modifier onlyForModuleHandler() {
require( msg.sender == moduleHandlerAddress );
_;
}
}
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