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Address Contract Partially Verified

Address 0x2D3cD7b81c93f188F3CB8aD87c8Acc73d6226e3A
Balance 0 ETH
Nonce 1
Code Size 2154 bytes
Creator 0x7FAfc116...0ae1 at tx 0xd7677c77...701449
Indexed Transactions 0
External Etherscan · Sourcify

Contract Bytecode

2154 bytes
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Verified Source Code Partial Match

Compiler: v0.6.7+commit.b8d736ae EVM: istanbul Optimization: Yes (200 runs)
CollateralJoin1.sol 109 lines 
/// AdvancedTokenAdapters.sol

// Copyright (C) 2018 Rain <[email protected]>
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero 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 Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.

pragma solidity 0.6.7;

abstract contract SAFEEngineLike {
    function modifyCollateralBalance(bytes32,address,int) virtual public;
}

// CollateralJoin1
abstract contract CollateralLike {
    function decimals() virtual public view returns (uint);
    function transfer(address,uint) virtual public returns (bool);
    function transferFrom(address,address,uint) virtual public returns (bool);
}

contract CollateralJoin1 {
    // --- Auth ---
    mapping (address => uint) public authorizedAccounts;
    /**
     * @notice Add auth to an account
     * @param account Account to add auth to
     */
    function addAuthorization(address account) external isAuthorized {
        authorizedAccounts[account] = 1;
        emit AddAuthorization(account);
    }
    /**
     * @notice Remove auth from an account
     * @param account Account to remove auth from
     */
    function removeAuthorization(address account) external isAuthorized {
        authorizedAccounts[account] = 0;
        emit RemoveAuthorization(account);
    }
    /**
    * @notice Checks whether msg.sender can call an authed function
    **/
    modifier isAuthorized {
        require(authorizedAccounts[msg.sender] == 1, "CollateralJoin1/account-not-authorized");
        _;
    }

    SAFEEngineLike public safeEngine;
    bytes32        public collateralType;
    CollateralLike public collateral;
    uint           public decimals;
    uint           public contractEnabled;  // Access Flag

    // --- Events ---
    event AddAuthorization(address account);
    event RemoveAuthorization(address account);
    event DisableContract();
    event Join(address sender, address usr, uint wad);
    event Exit(address sender, address usr, uint wad);

    constructor(address safeEngine_, bytes32 collateralType_, address collateral_) public {
        authorizedAccounts[msg.sender] = 1;
        contractEnabled = 1;
        safeEngine = SAFEEngineLike(safeEngine_);
        collateralType = collateralType_;
        collateral = CollateralLike(collateral_);
        decimals = collateral.decimals();
        require(decimals == 18, "CollateralJoin1/not-18-decimals");
        emit AddAuthorization(msg.sender);
    }

    // --- Math ---
    function addition(uint x, int y) internal pure returns (uint z) {
        z = x + uint(y);
        require(y >= 0 || z <= x);
        require(y <= 0 || z >= x);
    }

    // --- Administration ---
    function disableContract() external isAuthorized {
        contractEnabled = 0;
        emit DisableContract();
    }

    // --- Collateral Gateway ---
    function join(address usr, uint wad) external {
        require(contractEnabled == 1, "CollateralJoin1/not-contractEnabled");
        require(int(wad) >= 0, "CollateralJoin1/overflow");
        safeEngine.modifyCollateralBalance(collateralType, usr, int(wad));
        require(collateral.transferFrom(msg.sender, address(this), wad), "CollateralJoin1/failed-transfer");
        emit Join(msg.sender, usr, wad);
    }
    function exit(address usr, uint wad) external {
        require(wad <= 2 ** 255, "CollateralJoin1/overflow");
        safeEngine.modifyCollateralBalance(collateralType, msg.sender, -int(wad));
        require(collateral.transfer(usr, wad), "CollateralJoin1/failed-transfer");
        emit Exit(msg.sender, usr, wad);
    }
}

Read Contract

authorizedAccounts 0x24ba5884 → uint256
collateral 0xd8dfeb45 → address
collateralType 0xe824600f → bytes32
contractEnabled 0x41b3a0d9 → uint256
decimals 0x313ce567 → uint256
safeEngine 0x67aea313 → address

Write Contract 5 functions

These functions modify contract state and require a wallet transaction to execute.

addAuthorization 0x35b28153
address account
disableContract 0x894ba833
No parameters
exit 0xef693bed
address usr
uint256 wad
join 0x3b4da69f
address usr
uint256 wad
removeAuthorization 0x94f3f81d
address account

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