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Warning! Contract bytecode has been changed and doesn't match the verified one. Therefore, interaction with this smart contract may be risky.
- Contract name:
- Pot
- Optimization enabled
- false
- Compiler version
- v0.5.12+commit.7709ece9
- EVM Version
- default
- Verified at
- 2024-12-09T21:59:52.615137Z
Constructor Arguments
0x00000000000000000000000035d1b3f3d7966a1dfe207aa4514c12a259a0492b
Arg [0] (address) : 0x35d1b3f3d7966a1dfe207aa4514c12a259a0492b
Contract source code
/**
*Submitted for verification at Etherscan.io on 2019-11-14
*/
// hevm: flattened sources of /nix/store/8xb41r4qd0cjb63wcrxf1qmfg88p0961-dss-6fd7de0/src/pot.sol
pragma solidity =0.5.12;
////// /nix/store/8xb41r4qd0cjb63wcrxf1qmfg88p0961-dss-6fd7de0/src/lib.sol
// 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/>.
/* pragma solidity 0.5.12; */
contract LibNote {
event LogNote(
bytes4 indexed sig,
address indexed usr,
bytes32 indexed arg1,
bytes32 indexed arg2,
bytes data
) anonymous;
modifier note {
_;
assembly {
// log an 'anonymous' event with a constant 6 words of calldata
// and four indexed topics: selector, caller, arg1 and arg2
let mark := msize // end of memory ensures zero
mstore(0x40, add(mark, 288)) // update free memory pointer
mstore(mark, 0x20) // bytes type data offset
mstore(add(mark, 0x20), 224) // bytes size (padded)
calldatacopy(add(mark, 0x40), 0, 224) // bytes payload
log4(mark, 288, // calldata
shl(224, shr(224, calldataload(0))), // msg.sig
caller, // msg.sender
calldataload(4), // arg1
calldataload(36) // arg2
)
}
}
}
////// /nix/store/8xb41r4qd0cjb63wcrxf1qmfg88p0961-dss-6fd7de0/src/pot.sol
/// pot.sol -- Dai Savings Rate
// Copyright (C) 2018 Rain <rainbreak@riseup.net>
//
// 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 0.5.12; */
/* import "./lib.sol"; */
/*
"Savings Dai" is obtained when Dai is deposited into
this contract. Each "Savings Dai" accrues Dai interest
at the "Dai Savings Rate".
This contract does not implement a user tradeable token
and is intended to be used with adapters.
--- `save` your `dai` in the `pot` ---
- `dsr`: the Dai Savings Rate
- `pie`: user balance of Savings Dai
- `join`: start saving some dai
- `exit`: remove some dai
- `drip`: perform rate collection
*/
contract VatLike {
function move(address,address,uint256) external;
function suck(address,address,uint256) external;
}
contract Pot is LibNote {
// --- Auth ---
mapping (address => uint) public wards;
function rely(address guy) external note auth { wards[guy] = 1; }
function deny(address guy) external note auth { wards[guy] = 0; }
modifier auth {
require(wards[msg.sender] == 1, "Pot/not-authorized");
_;
}
// --- Data ---
mapping (address => uint256) public pie; // user Savings Dai
uint256 public Pie; // total Savings Dai
uint256 public dsr; // the Dai Savings Rate
uint256 public chi; // the Rate Accumulator
VatLike public vat; // CDP engine
address public vow; // debt engine
uint256 public rho; // time of last drip
uint256 public live; // Access Flag
// --- Init ---
constructor(address vat_) public {
wards[msg.sender] = 1;
vat = VatLike(vat_);
dsr = ONE;
chi = ONE;
rho = now;
live = 1;
}
// --- Math ---
uint256 constant ONE = 10 ** 27;
function rpow(uint x, uint n, uint base) internal pure returns (uint z) {
assembly {
switch x case 0 {switch n case 0 {z := base} default {z := 0}}
default {
switch mod(n, 2) case 0 { z := base } default { z := x }
let half := div(base, 2) // for rounding.
for { n := div(n, 2) } n { n := div(n,2) } {
let xx := mul(x, x)
if iszero(eq(div(xx, x), x)) { revert(0,0) }
let xxRound := add(xx, half)
if lt(xxRound, xx) { revert(0,0) }
x := div(xxRound, base)
if mod(n,2) {
let zx := mul(z, x)
if and(iszero(iszero(x)), iszero(eq(div(zx, x), z))) { revert(0,0) }
let zxRound := add(zx, half)
if lt(zxRound, zx) { revert(0,0) }
z := div(zxRound, base)
}
}
}
}
}
function rmul(uint x, uint y) internal pure returns (uint z) {
z = mul(x, y) / ONE;
}
function add(uint x, uint y) internal pure returns (uint z) {
require((z = x + y) >= x);
}
function sub(uint x, uint y) internal pure returns (uint z) {
require((z = x - y) <= x);
}
function mul(uint x, uint y) internal pure returns (uint z) {
require(y == 0 || (z = x * y) / y == x);
}
// --- Administration ---
function file(bytes32 what, uint256 data) external note auth {
require(live == 1, "Pot/not-live");
require(now == rho, "Pot/rho-not-updated");
if (what == "dsr") dsr = data;
else revert("Pot/file-unrecognized-param");
}
function file(bytes32 what, address addr) external note auth {
if (what == "vow") vow = addr;
else revert("Pot/file-unrecognized-param");
}
function cage() external note auth {
live = 0;
dsr = ONE;
}
// --- Savings Rate Accumulation ---
function drip() external note returns (uint tmp) {
require(now >= rho, "Pot/invalid-now");
tmp = rmul(rpow(dsr, now - rho, ONE), chi);
uint chi_ = sub(tmp, chi);
chi = tmp;
rho = now;
vat.suck(address(vow), address(this), mul(Pie, chi_));
}
// --- Savings Dai Management ---
function join(uint wad) external note {
require(now == rho, "Pot/rho-not-updated");
pie[msg.sender] = add(pie[msg.sender], wad);
Pie = add(Pie, wad);
vat.move(msg.sender, address(this), mul(chi, wad));
}
function exit(uint wad) external note {
pie[msg.sender] = sub(pie[msg.sender], wad);
Pie = sub(Pie, wad);
vat.move(address(this), msg.sender, mul(chi, wad));
}
}
Contract ABI
[{"type":"constructor","stateMutability":"nonpayable","payable":false,"inputs":[{"type":"address","name":"vat_","internalType":"address"}]},{"type":"event","name":"LogNote","inputs":[{"type":"bytes4","name":"sig","internalType":"bytes4","indexed":true},{"type":"address","name":"usr","internalType":"address","indexed":true},{"type":"bytes32","name":"arg1","internalType":"bytes32","indexed":true},{"type":"bytes32","name":"arg2","internalType":"bytes32","indexed":true},{"type":"bytes","name":"data","internalType":"bytes","indexed":false}],"anonymous":true},{"type":"function","stateMutability":"view","payable":false,"outputs":[{"type":"uint256","name":"","internalType":"uint256"}],"name":"Pie","inputs":[],"constant":true},{"type":"function","stateMutability":"nonpayable","payable":false,"outputs":[],"name":"cage","inputs":[],"constant":false},{"type":"function","stateMutability":"view","payable":false,"outputs":[{"type":"uint256","name":"","internalType":"uint256"}],"name":"chi","inputs":[],"constant":true},{"type":"function","stateMutability":"nonpayable","payable":false,"outputs":[],"name":"deny","inputs":[{"type":"address","name":"guy","internalType":"address"}],"constant":false},{"type":"function","stateMutability":"nonpayable","payable":false,"outputs":[{"type":"uint256","name":"tmp","internalType":"uint256"}],"name":"drip","inputs":[],"constant":false},{"type":"function","stateMutability":"view","payable":false,"outputs":[{"type":"uint256","name":"","internalType":"uint256"}],"name":"dsr","inputs":[],"constant":true},{"type":"function","stateMutability":"nonpayable","payable":false,"outputs":[],"name":"exit","inputs":[{"type":"uint256","name":"wad","internalType":"uint256"}],"constant":false},{"type":"function","stateMutability":"nonpayable","payable":false,"outputs":[],"name":"file","inputs":[{"type":"bytes32","name":"what","internalType":"bytes32"},{"type":"uint256","name":"data","internalType":"uint256"}],"constant":false},{"type":"function","stateMutability":"nonpayable","payable":false,"outputs":[],"name":"file","inputs":[{"type":"bytes32","name":"what","internalType":"bytes32"},{"type":"address","name":"addr","internalType":"address"}],"constant":false},{"type":"function","stateMutability":"nonpayable","payable":false,"outputs":[],"name":"join","inputs":[{"type":"uint256","name":"wad","internalType":"uint256"}],"constant":false},{"type":"function","stateMutability":"view","payable":false,"outputs":[{"type":"uint256","name":"","internalType":"uint256"}],"name":"live","inputs":[],"constant":true},{"type":"function","stateMutability":"view","payable":false,"outputs":[{"type":"uint256","name":"","internalType":"uint256"}],"name":"pie","inputs":[{"type":"address","name":"","internalType":"address"}],"constant":true},{"type":"function","stateMutability":"nonpayable","payable":false,"outputs":[],"name":"rely","inputs":[{"type":"address","name":"guy","internalType":"address"}],"constant":false},{"type":"function","stateMutability":"view","payable":false,"outputs":[{"type":"uint256","name":"","internalType":"uint256"}],"name":"rho","inputs":[],"constant":true},{"type":"function","stateMutability":"view","payable":false,"outputs":[{"type":"address","name":"","internalType":"contract VatLike"}],"name":"vat","inputs":[],"constant":true},{"type":"function","stateMutability":"view","payable":false,"outputs":[{"type":"address","name":"","internalType":"address"}],"name":"vow","inputs":[],"constant":true},{"type":"function","stateMutability":"view","payable":false,"outputs":[{"type":"uint256","name":"","internalType":"uint256"}],"name":"wards","inputs":[{"type":"address","name":"","internalType":"address"}],"constant":true}]
Contract Creation Code
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Deployed ByteCode
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