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userContract.sol
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userContract.sol
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// SPDX-License-Identifier: MIT`
pragma solidity ^0.5.12;
contract userContract{
address owner;
event registerOnKycContract( address kycContractAddress , uint valueToLock );
event getBackValueFromKycContract( address kycContractAddress , uint valueToBack );
event removeAccountFromKycContract( address kycContractAddress);
event transferWithKycContract( address kycContractAddress , address destinationAddress, uint valueToTransfer );
event transferSuccess( address destination , uint valueToTransfer );
modifier onlyOwner( address requester ){
require( owner == requester , "Access denied!" );
_;
}
constructor() public {
owner = msg.sender;
}
function registeringOnKycContract(address kycContract) external payable onlyOwner(msg.sender) {
(bool success , bytes memory returnData) = kycContract.call.value(msg.value)("");
require( success , "Register on kyc contract failed!");
emit registerOnKycContract( kycContract , msg.value);
}
function accountView( address kycContract) external view onlyOwner( msg.sender ) returns( address , uint , bool , bool , uint ){
( bool success , bytes memory returnData ) = kycContract.staticcall( abi.encodeWithSignature("userView()") );
require( success , "Call to kyc contract failed!" );
return ( abi.decode( returnData , ( address , uint , bool , bool , uint) ) );
}
function kycView( address kycContract , address target ) external view returns(bool) {
( bool success , bytes memory returnData ) = kycContract.staticcall( abi.encodeWithSignature( "kycCheck(address)" , target ) );
require( success , "Call to kyc contract failed!");
return ( abi.decode( returnData , (bool)) );
}
function delegateTransfer( address kycContract , address destination) external payable onlyOwner( msg.sender ) {
( bool success , bytes memory returnData ) = kycContract.call( abi.encodeWithSignature( "secureTransfer(address,uint256)" , destination , msg.value) );
require( success , "Call to kyc contract failed!");
emit transferWithKycContract( kycContract , destination , msg.value );
}
function directTransfer( address kycContract , address destination ) external payable onlyOwner( msg.sender ) {
bool kycResult = this.kycView( kycContract , destination );
require( kycResult , "The destination not verified!" );
uint destinationSize;
assembly {
destinationSize := extcodesize( destination )
}
if( destinationSize == 0){
address(uint(destination)).transfer( msg.value );
}else{
( bool success , bytes memory returnData ) = destination.call.value( msg.value )("");
require( success , "Transfer failed!" );
}
emit transferSuccess( destination , msg.value );
}
function getBackValue( address kycContract , uint valueToBack ) external onlyOwner(msg.sender) {
( bool success , bytes memory returnData ) = kycContract.call( abi.encodeWithSignature("transferBack(uint256)",valueToBack));
require( success , "Getting back value from kyc contract failed!");
emit getBackValueFromKycContract( kycContract , valueToBack );
}
function removeFromKycContract( address kycContract ) external onlyOwner(msg.sender) {
( address accountAddr , uint lockedBalance , bool kycStatus , bool isContract , uint txCount ) =
this.accountView(msg.sender);
if( lockedBalance != 0 ){
( bool success , bytes memory returnData ) = kycContract.call( abi.encodeWithSignature( "transferBack()" , lockedBalance ) );
require( success , "Call to kyc contract failed!" );
}
( bool success , bytes memory returnData ) = kycContract.call( abi.encodeWithSignature( "removeAccount()" ) );
require( success , "Call to kyc contract failed!" );
emit removeAccountFromKycContract( kycContract );
}
function() external payable {}
}