Overview
Max Total Supply
16,000,000 AAVE
Holders
173,089 ( -0.080%)
Market
Price
$279.59 @ 0.070235 ETH (-0.25%)
Onchain Market Cap
$4,473,440,000.00
Circulating Supply Market Cap
$4,189,349,987.00
Other Info
Token Contract (WITH 18 Decimals)
Balance
0.623724 AAVEValue
$174.39 ( ~0.0438083198827775 Eth) [0.0000%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | BTCC | AAVE-USDT | $280.79 0.0704901 Eth | $114,316,721.00 407,253.323 AAVE | 16.9753% |
2 | Binance | AAVE-USDT | $280.71 0.0704608 Eth | $45,736,996.00 163,121.202 AAVE | 6.7993% |
3 | WhiteBIT | AAVE-USDT | $279.50 0.0700415 Eth | $29,210,423.00 104,509.720 AAVE | 4.3562% |
4 | Websea | AAVE-USDT | $279.12 0.0699796 Eth | $24,818,197.00 0.000 AAVE | 0.0000% |
5 | Bilaxy | AAVE-USDT | $278.72 0.0698790 Eth | $15,315,450.00 54,949.219 AAVE | 2.2904% |
6 | P2B | AAVE-USDT | $279.80 0.0702464 Eth | $14,586,734.00 52,132.481 AAVE | 2.1730% |
7 | Bitget | AAVE-USDT | $279.74 0.0702325 Eth | $11,099,901.00 39,583.551 AAVE | 1.6499% |
8 | Coinbase Exchange | AAVE-USD | $281.36 0.0706299 Eth | $10,781,846.00 38,320.465 AAVE | 1.5973% |
9 | BVOX | AAVE-USDT | $279.74 0.0702346 Eth | $10,696,185.00 38,129.943 AAVE | 1.5893% |
10 | Bybit | AAVE-USDT | $279.76 0.0702354 Eth | $9,911,264.00 35,343.143 AAVE | 1.4732% |
11 | Gate.io | AAVE-USDT | $279.84 0.0702576 Eth | $9,189,872.00 32,804.359 AAVE | 1.3674% |
12 | Hibt | AAVE-USDT | $281.16 0.0705795 Eth | $9,172,956.00 32,710.586 AAVE | 1.3635% |
13 | OKX | AAVE-USDT | $279.71 0.0702271 Eth | $8,278,245.00 29,512.414 AAVE | 1.2301% |
14 | Binance | AAVE-ETH | $279.62 0.0700976 Eth | $7,719,016.00 27,496.611 AAVE | 1.1461% |
15 | KuCoin | AAVE-USDT | $280.14 0.0703308 Eth | $7,044,328.00 25,145.987 AAVE | 1.0481% |
16 | XT.COM | AAVE-USDT | $279.53 0.0701015 Eth | $6,771,194.00 24,142.756 AAVE | 1.0063% |
17 | BTSE | AAVE-USDT | $280.18 0.0703369 Eth | $6,676,483.00 23,829.633 AAVE | 0.9933% |
18 | Bitunix | AAVE-USDT | $280.11 0.0703137 Eth | $5,780,687.00 20,636.136 AAVE | 0.8602% |
19 | Upbit | AAVE-KRW | $274.55 0.0689294 Eth | $5,690,171.00 20,725.573 AAVE | 0.8639% |
20 | DigiFinex | AAVE-USDT | $280.07 0.0703150 Eth | $5,630,056.00 20,101.997 AAVE | 0.8379% |
21 | FMCPAY | AAVE-USDT | $281.14 0.0705732 Eth | $5,218,516.00 18,612.533 AAVE | 0.7758% |
22 | CoinW | AAVE-USDT | $279.46 0.0700321 Eth | $4,762,419.00 17,041.386 AAVE | 0.7103% |
23 | Uniswap V3 (Ethereum) | 0X7FC66500C84A76AD7E9C93437BFC5AC33E2DDAE9-0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984 | $280.69 0.0704573 Eth | $4,526,513.00 15,924.409 0X7FC66500C84A76AD7E9C93437BFC5AC33E2DDAE9 | 0.6638% |
24 | MEXC | AAVE-USDT | $281.12 0.0705372 Eth | $3,935,739.00 14,000.167 AAVE | 0.5836% |
25 | Ourbit | AAVE-USDT | $279.38 0.0700127 Eth | $3,910,171.00 13,943.041 AAVE | 0.5812% |
26 | Biconomy.com | AAVE-USDT | $280.15 0.0703237 Eth | $3,715,425.00 13,244.502 AAVE | 0.5521% |
27 | LBank | AAVE-USDT | $281.19 0.0705165 Eth | $3,568,663.00 12,691.230 AAVE | 0.5290% |
28 | LATOKEN | AAVE-USDT | $279.78 0.0702426 Eth | $3,487,934.00 12,466.764 AAVE | 0.5196% |
29 | HTX | AAVE-USDT | $279.71 0.0702289 Eth | $3,129,643.00 11,159.588 AAVE | 0.4652% |
30 | Trubit | AAVE-USDT | $281.43 0.0706449 Eth | $1,935,735.00 6,906.188 AAVE | 0.2879% |
31 | BYDFi | AAVE-USDT | $280.35 0.0703860 Eth | $1,852,162.00 6,606.655 AAVE | 0.2754% |
32 | Binance | AAVE-USDC | $280.49 0.0704148 Eth | $1,850,209.00 6,598.437 AAVE | 0.2750% |
33 | FameEX | AAVE-USDT | $280.81 0.0704730 Eth | $1,818,312.00 6,483.830 AAVE | 0.2703% |
34 | Uniswap V3 (Polygon) | 0XD6DF932A45C0F255F85145F286EA0B292B21C90B-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $281.56 0.0706810 Eth | $1,757,691.00 6,263.800 0XD6DF932A45C0F255F85145F286EA0B292B21C90B | 0.2611% |
35 | XT.COM | AAVE-ETH | $279.56 0.0700668 Eth | $1,715,774.00 6,111.359 AAVE | 0.2547% |
36 | Kraken | AAVE-USD | $280.40 0.0704012 Eth | $1,635,775.00 5,833.721 AAVE | 0.2432% |
37 | Phemex | AAVE-USDT | $281.07 0.0705560 Eth | $1,622,989.00 5,774.234 AAVE | 0.2407% |
38 | Coinstore | AAVE-USDT | $281.16 0.0705630 Eth | $1,621,986.00 5,775.146 AAVE | 0.2407% |
39 | WEEX | AAVE-USDT | $279.44 0.0700749 Eth | $1,503,150.00 5,379.192 AAVE | 0.2242% |
40 | Bitvavo | AAVE-EUR | $278.60 0.0698151 Eth | $1,077,264.00 3,866.757 AAVE | 0.1612% |
41 | BitDelta | AAVE-USDT | $279.84 0.0702597 Eth | $1,033,994.00 3,682.720 AAVE | 0.1535% |
42 | Kraken | AAVE-ETH | $280.73 0.0704847 Eth | $939,485.00 3,346.546 AAVE | 0.1395% |
43 | Deepcoin | AAVE-USDT | $279.84 0.0701898 Eth | $796,426.00 2,947.208 AAVE | 0.1228% |
44 | Binance | AAVE-FDUSD | $280.67 0.0704399 Eth | $765,520.00 2,736.713 AAVE | 0.1141% |
45 | Hotcoin | AAVE-USDT | $281.16 0.0705795 Eth | $651,723.00 2,317.985 AAVE | 0.0966% |
46 | Binance | AAVE-TRY | $282.73 0.0709735 Eth | $647,514.00 2,297.605 AAVE | 0.0958% |
47 | WhiteBIT | AAVE-BTC | $280.95 0.0705253 Eth | $601,653.00 2,141.479 AAVE | 0.0893% |
48 | CoinEx | AAVE-USDT | $279.00 0.0699174 Eth | $576,505.00 2,058.834 AAVE | 0.0858% |
49 | PointPay | AAVE-USDT | $279.42 0.0700323 Eth | $508,850.00 1,814.557 AAVE | 0.0756% |
50 | tanX | AAVE-USDC | $279.84 0.0702561 Eth | $504,237.00 1,798.701 AAVE | 0.0750% |
51 | WEEX | AAVE-USDC | $277.39 0.0695756 Eth | $501,334.00 1,807.334 AAVE | 0.0753% |
52 | Coinbase Exchange | AAVE-EUR | $280.65 0.0704508 Eth | $491,882.00 1,752.675 AAVE | 0.0731% |
53 | Pionex | AAVE-USDT | $279.76 0.0702411 Eth | $475,080.00 1,694.981 AAVE | 0.0707% |
54 | Uniswap V3 (Polygon) | 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0XD6DF932A45C0F255F85145F286EA0B292B21C90B | $281.49 0.0706612 Eth | $443,464.00 441,576.107 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | 18.4060% |
55 | BigONE | AAVE-USDT | $279.66 0.0701871 Eth | $401,205.00 1,434.614 AAVE | 0.0598% |
56 | Uniswap V3 (BSC) | 0XFB6115445BFF7B52FEB98650C87F44907E58F802-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C | $279.13 0.0700695 Eth | $381,724.00 1,382.037 0XFB6115445BFF7B52FEB98650C87F44907E58F802 | 0.0576% |
57 | Kraken | AAVE-EUR | $278.70 0.0699754 Eth | $369,967.00 1,327.452 AAVE | 0.0553% |
58 | AscendEX (BitMax) | AAVE-USDT | $278.54 0.0699332 Eth | $363,868.00 1,306.357 AAVE | 0.0545% |
59 | Uniswap V3 (Ethereum) | 0X7FC66500C84A76AD7E9C93437BFC5AC33E2DDAE9-0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984 | $280.24 0.0703474 Eth | $325,464.00 1,153.256 0X7FC66500C84A76AD7E9C93437BFC5AC33E2DDAE9 | 0.0481% |
60 | Bitazza | AAVE-USDT | $280.37 0.0703084 Eth | $279,742.00 997.539 AAVE | 0.0416% |
61 | Dex-Trade | AAVE-ETH | $281.14 0.0705747 Eth | $272,117.00 967.904 AAVE | 0.0403% |
62 | Uniswap V3 (Polygon) | 0XD6DF932A45C0F255F85145F286EA0B292B21C90B-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $281.93 0.0707729 Eth | $236,949.00 834.054 0XD6DF932A45C0F255F85145F286EA0B292B21C90B | 0.0348% |
63 | Bitcointry | AAVE-USDT | $280.82 0.0704916 Eth | $219,077.00 780.761 AAVE | 0.0325% |
64 | Coinbase Exchange | AAVE-BTC | $280.75 0.0704761 Eth | $166,267.00 592.231 AAVE | 0.0247% |
65 | WhiteBIT | AAVE-TRY | $280.97 0.0704374 Eth | $163,275.00 581.105 AAVE | 0.0242% |
66 | Uniswap V3 (Polygon) | 0XD6DF932A45C0F255F85145F286EA0B292B21C90B-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $280.73 0.0704689 Eth | $162,902.00 581.016 0XD6DF932A45C0F255F85145F286EA0B292B21C90B | 0.0242% |
67 | Uniswap V3 (Polygon) | 0XD6DF932A45C0F255F85145F286EA0B292B21C90B-0XC2132D05D31C914A87C6611C10748AEB04B58E8F | $281.47 0.0706579 Eth | $155,003.00 552.868 0XD6DF932A45C0F255F85145F286EA0B292B21C90B | 0.0230% |
68 | Bitso | AAVE-USD | $279.57 0.0701881 Eth | $125,458.00 448.756 AAVE | 0.0187% |
69 | Bitexen | AAVE-TRY | $277.95 0.0696797 Eth | $117,801.00 423.819 AAVE | 0.0177% |
70 | Quickswap (v3) | 0XD6DF932A45C0F255F85145F286EA0B292B21C90B-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $281.05 0.0705527 Eth | $117,764.00 419.735 0XD6DF932A45C0F255F85145F286EA0B292B21C90B | 0.0175% |
71 | Gemini | AAVE-USD | $281.20 0.0706020 Eth | $113,524.00 403.712 AAVE | 0.0168% |
72 | PointPay | AAVE-BTC | $279.82 0.0701750 Eth | $106,528.00 378.899 AAVE | 0.0158% |
73 | Coinbase Exchange | AAVE-GBP | $280.10 0.0703135 Eth | $90,207.00 322.053 AAVE | 0.0134% |
74 | Nonkyc.io | AAVE-ETH | $281.25 0.0705394 Eth | $88,576.00 315.984 AAVE | 0.0132% |
75 | Uniswap V3 (Polygon) | 0XD6DF932A45C0F255F85145F286EA0B292B21C90B-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174 | $281.43 0.0706472 Eth | $79,490.00 283.379 0XD6DF932A45C0F255F85145F286EA0B292B21C90B | 0.0118% |
76 | OKX | AAVE-USDC | $279.49 0.0701735 Eth | $67,271.00 240.251 AAVE | 0.0100% |
77 | Uniswap V3 (Optimism) | 0X76FB31FB4AF56892A25E32CFC43DE717950C9278-0X4200000000000000000000000000000000000006 | $278.27 0.0698211 Eth | $65,398.00 236.079 0X76FB31FB4AF56892A25E32CFC43DE717950C9278 | 0.0098% |
78 | PancakeSwap V3 (BSC) | 0XFB6115445BFF7B52FEB98650C87F44907E58F802-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C | $281.01 0.0705534 Eth | $42,443.00 151.615 0XFB6115445BFF7B52FEB98650C87F44907E58F802 | 0.0063% |
79 | EXMO | AAVE-USDT | $281.93 0.0707705 Eth | $38,997.00 138.320 AAVE | 0.0058% |
80 | Uniswap V3 (Arbitrum One) | 0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XBA5DDD1F9D7F570DC94A51479A000E3BCE967196 | $281.66 0.0707033 Eth | $31,240.00 31,227.556 0XAF88D065E77C8CC2239327C5EDB3A432268E5831 | 1.3016% |
81 | KuCoin | AAVE-BTC | $279.93 0.0702814 Eth | $30,743.00 109.824 AAVE | 0.0046% |
82 | Uniswap V3 (Arbitrum One) | 0XBA5DDD1F9D7F570DC94A51479A000E3BCE967196-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9 | $281.68 0.0707078 Eth | $28,294.00 100.320 0XBA5DDD1F9D7F570DC94A51479A000E3BCE967196 | 0.0042% |
83 | Mercado Bitcoin | AAVE-BRL | $282.28 0.0708736 Eth | $26,759.00 94.796 AAVE | 0.0040% |
84 | TokoCrypto | AAVE-USDT | $281.28 0.0706093 Eth | $26,395.00 93.838 AAVE | 0.0039% |
85 | Nonkyc.io | AAVE-BTC | $280.57 0.0703222 Eth | $26,191.00 93.204 AAVE | 0.0039% |
86 | Uniswap V3 (Polygon) | 0XD6DF932A45C0F255F85145F286EA0B292B21C90B-0X1BFD67037B42CF73ACF2047067BD4F2C47D9BFD6 | $280.34 0.0703217 Eth | $22,573.00 80.329 0XD6DF932A45C0F255F85145F286EA0B292B21C90B | 0.0033% |
87 | Uniswap V3 (BSC) | 0XFB6115445BFF7B52FEB98650C87F44907E58F802-0X55D398326F99059FF775485246999027B3197955 | $279.24 0.0700476 Eth | $13,219.45 46.378 0XFB6115445BFF7B52FEB98650C87F44907E58F802 | 0.0019% |
88 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XD6DF932A45C0F255F85145F286EA0B292B21C90B | $280.63 0.0704463 Eth | $10,553.55 405.294 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0169% |
89 | Uniswap V3 (Optimism) | 0X76FB31FB4AF56892A25E32CFC43DE717950C9278-0X4200000000000000000000000000000000000006 | $274.85 0.0689637 Eth | $9,533.26 34.403 0X76FB31FB4AF56892A25E32CFC43DE717950C9278 | 0.0014% |
90 | Gate.io | AAVE-ETH | $281.13 0.0705826 Eth | $9,246.74 33.000 AAVE | 0.0014% |
91 | Uniswap V3 (Ethereum) | 0X7FC66500C84A76AD7E9C93437BFC5AC33E2DDAE9-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $280.61 0.0704405 Eth | $9,065.85 32.197 0X7FC66500C84A76AD7E9C93437BFC5AC33E2DDAE9 | 0.0013% |
92 | Coinone | AAVE-KRW | $276.30 0.0693724 Eth | $8,936.19 32.342 AAVE | 0.0013% |
93 | CoinEx | AAVE-BTC | $280.01 0.0701884 Eth | $7,033.29 25.042 AAVE | 0.0010% |
94 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XD6DF932A45C0F255F85145F286EA0B292B21C90B | $279.37 0.0700570 Eth | $6,375.76 247.663 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0103% |
95 | Uniswap V3 (Polygon) | 0XB33EAAD8D922B1083446DC23F610C2567FB5180F-0XD6DF932A45C0F255F85145F286EA0B292B21C90B | $280.63 0.0703953 Eth | $3,860.94 209.968 0XB33EAAD8D922B1083446DC23F610C2567FB5180F | 0.0088% |
96 | Quickswap | 0XDF7837DE1F2FA4631D716CF2502F8B230F1DCC32-0XD6DF932A45C0F255F85145F286EA0B292B21C90B | $279.24 0.0700947 Eth | $3,312.01 492,391.010 0XDF7837DE1F2FA4631D716CF2502F8B230F1DCC32 | 20.5241% |
97 | CoinEx | AAVE-USDC | $281.09 0.0705753 Eth | $2,484.44 8.834 AAVE | 0.0004% |
98 | Uniswap V3 (Arbitrum One) | 0XBA5DDD1F9D7F570DC94A51479A000E3BCE967196-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | $278.68 0.0698553 Eth | $1,257.25 4.433 0XBA5DDD1F9D7F570DC94A51479A000E3BCE967196 | 0.0002% |
99 | Uniswap V3 (Polygon) | 0XC3C7D422809852031B44AB29EEC9F1EFF2A58756-0XD6DF932A45C0F255F85145F286EA0B292B21C90B | $279.37 0.0700570 Eth | $989.80 461.833 0XC3C7D422809852031B44AB29EEC9F1EFF2A58756 | 0.0193% |
100 | Quickswap (v3) | 0XD6DF932A45C0F255F85145F286EA0B292B21C90B-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $280.18 0.0703326 Eth | $292.42 1.033 0XD6DF932A45C0F255F85145F286EA0B292B21C90B | 0.0000% |
Contract Name:
InitializableAdminUpgradeabilityProxy
Compiler Version
v0.6.10+commit.00c0fcaf
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: agpl-3.0 pragma solidity ^0.6.10; import "./BaseAdminUpgradeabilityProxy.sol"; import "./InitializableUpgradeabilityProxy.sol"; /** * @title InitializableAdminUpgradeabilityProxy * @dev Extends from BaseAdminUpgradeabilityProxy with an initializer for * initializing the implementation, admin, and init data. */ contract InitializableAdminUpgradeabilityProxy is BaseAdminUpgradeabilityProxy, InitializableUpgradeabilityProxy { /** * Contract initializer. * @param _logic address of the initial implementation. * @param _admin Address of the proxy administrator. * @param _data Data to send as msg.data to the implementation to initialize the proxied contract. * It should include the signature and the parameters of the function to be called, as described in * https://solidity.readthedocs.io/en/v0.4.24/abi-spec.html#function-selector-and-argument-encoding. * This parameter is optional, if no data is given the initialization call to proxied contract will be skipped. */ function initialize(address _logic, address _admin, bytes memory _data) public payable { require(_implementation() == address(0)); InitializableUpgradeabilityProxy.initialize(_logic, _data); assert(ADMIN_SLOT == bytes32(uint256(keccak256("eip1967.proxy.admin")) - 1)); _setAdmin(_admin); } /** * @dev Only fall back when the sender is not the admin. */ function _willFallback() internal override(BaseAdminUpgradeabilityProxy, Proxy) { BaseAdminUpgradeabilityProxy._willFallback(); } }
// SPDX-License-Identifier: agpl-3.0 pragma solidity 0.6.10; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); }
// SPDX-License-Identifier: agpl-3.0 pragma solidity 0.6.10; import {IERC20} from "./IERC20.sol"; interface IERC20Detailed is IERC20 { function name() external view returns(string memory); function symbol() external view returns(string memory); function decimals() external view returns(uint8); }
// SPDX-License-Identifier: agpl-3.0 pragma solidity 0.6.10; interface ITransferHook { function onTransfer(address from, address to, uint256 amount) external; }
pragma solidity ^0.6.2; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // According to EIP-1052, 0x0 is the value returned for not-yet created accounts // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned // for accounts without code, i.e. `keccak256('')` bytes32 codehash; bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; // solhint-disable-next-line no-inline-assembly assembly { codehash := extcodehash(account) } return (codehash != accountHash && codehash != 0x0); } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } }
pragma solidity ^0.6.0; import './UpgradeabilityProxy.sol'; /** * @title BaseAdminUpgradeabilityProxy * @dev This contract combines an upgradeability proxy with an authorization * mechanism for administrative tasks. * All external functions in this contract must be guarded by the * `ifAdmin` modifier. See ethereum/solidity#3864 for a Solidity * feature proposal that would enable this to be done automatically. */ contract BaseAdminUpgradeabilityProxy is BaseUpgradeabilityProxy { /** * @dev Emitted when the administration has been transferred. * @param previousAdmin Address of the previous admin. * @param newAdmin Address of the new admin. */ event AdminChanged(address previousAdmin, address newAdmin); /** * @dev Storage slot with the admin of the contract. * This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1, and is * validated in the constructor. */ bytes32 internal constant ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103; /** * @dev Modifier to check whether the `msg.sender` is the admin. * If it is, it will run the function. Otherwise, it will delegate the call * to the implementation. */ modifier ifAdmin() { if (msg.sender == _admin()) { _; } else { _fallback(); } } /** * @return The address of the proxy admin. */ function admin() external ifAdmin returns (address) { return _admin(); } /** * @return The address of the implementation. */ function implementation() external ifAdmin returns (address) { return _implementation(); } /** * @dev Changes the admin of the proxy. * Only the current admin can call this function. * @param newAdmin Address to transfer proxy administration to. */ function changeAdmin(address newAdmin) external ifAdmin { require(newAdmin != address(0), "Cannot change the admin of a proxy to the zero address"); emit AdminChanged(_admin(), newAdmin); _setAdmin(newAdmin); } /** * @dev Upgrade the backing implementation of the proxy. * Only the admin can call this function. * @param newImplementation Address of the new implementation. */ function upgradeTo(address newImplementation) external ifAdmin { _upgradeTo(newImplementation); } /** * @dev Upgrade the backing implementation of the proxy and call a function * on the new implementation. * This is useful to initialize the proxied contract. * @param newImplementation Address of the new implementation. * @param data Data to send as msg.data in the low level call. * It should include the signature and the parameters of the function to be called, as described in * https://solidity.readthedocs.io/en/v0.4.24/abi-spec.html#function-selector-and-argument-encoding. */ function upgradeToAndCall(address newImplementation, bytes calldata data) payable external ifAdmin { _upgradeTo(newImplementation); (bool success,) = newImplementation.delegatecall(data); require(success); } /** * @return adm The admin slot. */ function _admin() internal view returns (address adm) { bytes32 slot = ADMIN_SLOT; assembly { adm := sload(slot) } } /** * @dev Sets the address of the proxy admin. * @param newAdmin Address of the new proxy admin. */ function _setAdmin(address newAdmin) internal { bytes32 slot = ADMIN_SLOT; assembly { sstore(slot, newAdmin) } } /** * @dev Only fall back when the sender is not the admin. */ function _willFallback() internal override virtual { require(msg.sender != _admin(), "Cannot call fallback function from the proxy admin"); super._willFallback(); } }
pragma solidity ^0.6.0; import './BaseUpgradeabilityProxy.sol'; /** * @title UpgradeabilityProxy * @dev Extends BaseUpgradeabilityProxy with a constructor for initializing * implementation and init data. */ contract UpgradeabilityProxy is BaseUpgradeabilityProxy { /** * @dev Contract constructor. * @param _logic Address of the initial implementation. * @param _data Data to send as msg.data to the implementation to initialize the proxied contract. * It should include the signature and the parameters of the function to be called, as described in * https://solidity.readthedocs.io/en/v0.4.24/abi-spec.html#function-selector-and-argument-encoding. * This parameter is optional, if no data is given the initialization call to proxied contract will be skipped. */ constructor(address _logic, bytes memory _data) public payable { assert(IMPLEMENTATION_SLOT == bytes32(uint256(keccak256('eip1967.proxy.implementation')) - 1)); _setImplementation(_logic); if(_data.length > 0) { (bool success,) = _logic.delegatecall(_data); require(success); } } }
pragma solidity ^0.6.0; import './Proxy.sol'; import './Address.sol'; /** * @title BaseUpgradeabilityProxy * @dev This contract implements a proxy that allows to change the * implementation address to which it will delegate. * Such a change is called an implementation upgrade. */ contract BaseUpgradeabilityProxy is Proxy { /** * @dev Emitted when the implementation is upgraded. * @param implementation Address of the new implementation. */ event Upgraded(address indexed implementation); /** * @dev Storage slot with the address of the current implementation. * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is * validated in the constructor. */ bytes32 internal constant IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc; /** * @dev Returns the current implementation. * @return impl Address of the current implementation */ function _implementation() internal override view returns (address impl) { bytes32 slot = IMPLEMENTATION_SLOT; assembly { impl := sload(slot) } } /** * @dev Upgrades the proxy to a new implementation. * @param newImplementation Address of the new implementation. */ function _upgradeTo(address newImplementation) internal { _setImplementation(newImplementation); emit Upgraded(newImplementation); } /** * @dev Sets the implementation address of the proxy. * @param newImplementation Address of the new implementation. */ function _setImplementation(address newImplementation) internal { require(Address.isContract(newImplementation), "Cannot set a proxy implementation to a non-contract address"); bytes32 slot = IMPLEMENTATION_SLOT; assembly { sstore(slot, newImplementation) } } }
pragma solidity ^0.6.0; /** * @title Proxy * @dev Implements delegation of calls to other contracts, with proper * forwarding of return values and bubbling of failures. * It defines a fallback function that delegates all calls to the address * returned by the abstract _implementation() internal function. */ abstract contract Proxy { /** * @dev Fallback function. * Implemented entirely in `_fallback`. */ fallback () payable external { _fallback(); } /** * @return The Address of the implementation. */ function _implementation() internal virtual view returns (address); /** * @dev Delegates execution to an implementation contract. * This is a low level function that doesn't return to its internal call site. * It will return to the external caller whatever the implementation returns. * @param implementation Address to delegate. */ function _delegate(address implementation) internal { assembly { // Copy msg.data. We take full control of memory in this inline assembly // block because it will not return to Solidity code. We overwrite the // Solidity scratch pad at memory position 0. calldatacopy(0, 0, calldatasize()) // Call the implementation. // out and outsize are 0 because we don't know the size yet. let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0) // Copy the returned data. returndatacopy(0, 0, returndatasize()) switch result // delegatecall returns 0 on error. case 0 { revert(0, returndatasize()) } default { return(0, returndatasize()) } } } /** * @dev Function that is run as the first thing in the fallback function. * Can be redefined in derived contracts to add functionality. * Redefinitions must call super._willFallback(). */ function _willFallback() internal virtual { } /** * @dev fallback implementation. * Extracted to enable manual triggering. */ function _fallback() internal { _willFallback(); _delegate(_implementation()); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.6.0; /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with GSN meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.6.0; import "./Context.sol"; import "../interfaces/IERC20.sol"; import "./SafeMath.sol"; import "./Address.sol"; /** * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin guidelines: functions revert instead * of returning `false` on failure. This behavior is nonetheless conventional * and does not conflict with the expectations of ERC20 applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. */ contract ERC20 is Context, IERC20 { using SafeMath for uint256; using Address for address; mapping (address => uint256) private _balances; mapping (address => mapping (address => uint256)) private _allowances; uint256 private _totalSupply; string internal _name; string internal _symbol; uint8 private _decimals; /** * @dev Sets the values for {name} and {symbol}, initializes {decimals} with * a default value of 18. * * To select a different value for {decimals}, use {_setupDecimals}. * * All three of these values are immutable: they can only be set once during * construction. */ constructor (string memory name, string memory symbol) public { _name = name; _symbol = symbol; _decimals = 18; } /** * @dev Returns the name of the token. */ function name() public view returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view returns (string memory) { return _symbol; } /** * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5,05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is * called. * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. */ function decimals() public view returns (uint8) { return _decimals; } /** * @dev See {IERC20-totalSupply}. */ function totalSupply() public view override returns (uint256) { return _totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view override returns (uint256) { return _balances[account]; } /** * @dev See {IERC20-transfer}. * * Requirements: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. */ function transfer(address recipient, uint256 amount) public virtual override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } /** * @dev See {IERC20-allowance}. */ function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /** * @dev See {IERC20-approve}. * * Requirements: * * - `spender` cannot be the zero address. */ function approve(address spender, uint256 amount) public virtual override returns (bool) { _approve(_msgSender(), spender, amount); return true; } /** * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}; * * Requirements: * - `sender` and `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. * - the caller must have allowance for ``sender``'s tokens of at least * `amount`. */ function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } /** * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. */ function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue)); return true; } /** * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. */ function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")); return true; } /** * @dev Moves tokens `amount` from `sender` to `recipient`. * * This is internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. */ function _transfer(address sender, address recipient, uint256 amount) internal virtual { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(sender, recipient, amount); _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance"); _balances[recipient] = _balances[recipient].add(amount); emit Transfer(sender, recipient, amount); } /** @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements * * - `to` cannot be the zero address. */ function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply = _totalSupply.add(amount); _balances[account] = _balances[account].add(amount); emit Transfer(address(0), account, amount); } /** * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. */ function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance"); _totalSupply = _totalSupply.sub(amount); emit Transfer(account, address(0), amount); } /** * @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens. * * This is internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. */ function _approve(address owner, address spender, uint256 amount) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /** * @dev Sets {decimals} to a value other than the default one of 18. * * WARNING: This function should only be called from the constructor. Most * applications that interact with token contracts will not expect * {decimals} to ever change, and may work incorrectly if it does. */ function _setupDecimals(uint8 decimals_) internal { _decimals = decimals_; } /** * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be to transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { } }
pragma solidity ^0.6.0; /** * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } /** * @dev Returns the integer division of two unsigned integers. Reverts with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. */ function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { // Solidity only automatically asserts when dividing by 0 require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts with custom message when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } }
// SPDX-License-Identifier: agpl-3.0 pragma solidity ^0.6.10; import "./BaseUpgradeabilityProxy.sol"; /** * @title InitializableUpgradeabilityProxy * @dev Extends BaseUpgradeabilityProxy with an initializer for initializing * implementation and init data. */ contract InitializableUpgradeabilityProxy is BaseUpgradeabilityProxy { /** * @dev Contract initializer. * @param _logic Address of the initial implementation. * @param _data Data to send as msg.data to the implementation to initialize the proxied contract. * It should include the signature and the parameters of the function to be called, as described in * https://solidity.readthedocs.io/en/v0.4.24/abi-spec.html#function-selector-and-argument-encoding. * This parameter is optional, if no data is given the initialization call to proxied contract will be skipped. */ function initialize(address _logic, bytes memory _data) public payable { require(_implementation() == address(0)); assert(IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1)); _setImplementation(_logic); if (_data.length > 0) { (bool success, ) = _logic.delegatecall(_data); require(success); } } }
// SPDX-License-Identifier: agpl-3.0 pragma solidity 0.6.10; import {ERC20} from "../open-zeppelin/ERC20.sol"; import {ITransferHook} from "../interfaces/ITransferHook.sol"; import {VersionedInitializable} from "../utils/VersionedInitializable.sol"; /** * @notice implementation of the AAVE token contract * @author Aave */ contract AaveToken is ERC20, VersionedInitializable { /// @dev snapshot of a value on a specific block, used for balances struct Snapshot { uint128 blockNumber; uint128 value; } string internal constant NAME = "Aave Token"; string internal constant SYMBOL = "AAVE"; uint8 internal constant DECIMALS = 18; /// @dev the amount being distributed for the LEND -> AAVE migration uint256 internal constant MIGRATION_AMOUNT = 13000000 ether; /// @dev the amount being distributed for the PSI and PEI uint256 internal constant DISTRIBUTION_AMOUNT = 3000000 ether; uint256 public constant REVISION = 1; /// @dev owner => next valid nonce to submit with permit() mapping (address => uint256) public _nonces; mapping (address => mapping (uint256 => Snapshot)) public _snapshots; mapping (address => uint256) public _countsSnapshots; /// @dev reference to the Aave governance contract to call (if initialized) on _beforeTokenTransfer /// !!! IMPORTANT The Aave governance is considered a trustable contract, being its responsibility /// to control all potential reentrancies by calling back the AaveToken ITransferHook public _aaveGovernance; bytes32 public DOMAIN_SEPARATOR; bytes public constant EIP712_REVISION = bytes("1"); bytes32 internal constant EIP712_DOMAIN = keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"); bytes32 public constant PERMIT_TYPEHASH = keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)"); event SnapshotDone(address owner, uint128 oldValue, uint128 newValue); constructor() ERC20(NAME, SYMBOL) public {} /** * @dev initializes the contract upon assignment to the InitializableAdminUpgradeabilityProxy * @param migrator the address of the LEND -> AAVE migration contract * @param distributor the address of the AAVE distribution contract */ function initialize( address migrator, address distributor, ITransferHook aaveGovernance ) external initializer { uint256 chainId; //solium-disable-next-line assembly { chainId := chainid() } DOMAIN_SEPARATOR = keccak256(abi.encode( EIP712_DOMAIN, keccak256(bytes(NAME)), keccak256(EIP712_REVISION), chainId, address(this) )); _name = NAME; _symbol = SYMBOL; _setupDecimals(DECIMALS); _aaveGovernance = aaveGovernance; _mint(migrator, MIGRATION_AMOUNT); _mint(distributor, DISTRIBUTION_AMOUNT); } /** * @dev implements the permit function as for https://github.com/ethereum/EIPs/blob/8a34d644aacf0f9f8f00815307fd7dd5da07655f/EIPS/eip-2612.md * @param owner the owner of the funds * @param spender the spender * @param value the amount * @param deadline the deadline timestamp, type(uint256).max for no deadline * @param v signature param * @param s signature param * @param r signature param */ function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) external { require(owner != address(0), "INVALID_OWNER"); //solium-disable-next-line require(block.timestamp <= deadline, "INVALID_EXPIRATION"); uint256 currentValidNonce = _nonces[owner]; bytes32 digest = keccak256( abi.encodePacked( "\x19\x01", DOMAIN_SEPARATOR, keccak256( abi.encode(PERMIT_TYPEHASH, owner, spender, value, currentValidNonce, deadline)) ) ); require(owner == ecrecover(digest, v, r, s), "INVALID_SIGNATURE"); _nonces[owner] = currentValidNonce.add(1); _approve(owner, spender, value); } /** * @dev returns the revision of the implementation contract */ function getRevision() internal pure override returns (uint256) { return REVISION; } /** * @dev Writes a snapshot for an owner of tokens * @param owner The owner of the tokens * @param oldValue The value before the operation that is gonna be executed after the snapshot * @param newValue The value after the operation */ function _writeSnapshot(address owner, uint128 oldValue, uint128 newValue) internal { uint128 currentBlock = uint128(block.number); uint256 ownerCountOfSnapshots = _countsSnapshots[owner]; mapping (uint256 => Snapshot) storage snapshotsOwner = _snapshots[owner]; // Doing multiple operations in the same block if (ownerCountOfSnapshots != 0 && snapshotsOwner[ownerCountOfSnapshots.sub(1)].blockNumber == currentBlock) { snapshotsOwner[ownerCountOfSnapshots.sub(1)].value = newValue; } else { snapshotsOwner[ownerCountOfSnapshots] = Snapshot(currentBlock, newValue); _countsSnapshots[owner] = ownerCountOfSnapshots.add(1); } emit SnapshotDone(owner, oldValue, newValue); } /** * @dev Writes a snapshot before any operation involving transfer of value: _transfer, _mint and _burn * - On _transfer, it writes snapshots for both "from" and "to" * - On _mint, only for _to * - On _burn, only for _from * @param from the from address * @param to the to address * @param amount the amount to transfer */ function _beforeTokenTransfer(address from, address to, uint256 amount) internal override { if (from == to) { return; } if (from != address(0)) { uint256 fromBalance = balanceOf(from); _writeSnapshot(from, uint128(fromBalance), uint128(fromBalance.sub(amount))); } if (to != address(0)) { uint256 toBalance = balanceOf(to); _writeSnapshot(to, uint128(toBalance), uint128(toBalance.add(amount))); } // caching the aave governance address to avoid multiple state loads ITransferHook aaveGovernance = _aaveGovernance; if (aaveGovernance != ITransferHook(0)) { aaveGovernance.onTransfer(from, to, amount); } } }
// SPDX-License-Identifier: agpl-3.0 pragma solidity 0.6.10; /** * @title VersionedInitializable * * @dev Helper contract to support initializer functions. To use it, replace * the constructor with a function that has the `initializer` modifier. * WARNING: Unlike constructors, initializer functions must be manually * invoked. This applies both to deploying an Initializable contract, as well * as extending an Initializable contract via inheritance. * WARNING: When used with inheritance, manual care must be taken to not invoke * a parent initializer twice, or ensure that all initializers are idempotent, * because this is not dealt with automatically as with constructors. * * @author Aave, inspired by the OpenZeppelin Initializable contract */ abstract contract VersionedInitializable { /** * @dev Indicates that the contract has been initialized. */ uint256 internal lastInitializedRevision = 0; /** * @dev Modifier to use in the initializer function of a contract. */ modifier initializer() { uint256 revision = getRevision(); require(revision > lastInitializedRevision, "Contract instance has already been initialized"); lastInitializedRevision = revision; _; } /// @dev returns the revision number of the contract. /// Needs to be defined in the inherited class as a constant. function getRevision() internal pure virtual returns(uint256); // Reserved storage space to allow for layout changes in the future. uint256[50] private ______gap; }
// SPDX-License-Identifier: agpl-3.0 pragma solidity 0.6.10; import {IERC20} from "../interfaces/IERC20.sol"; import {SafeMath} from "../open-zeppelin/SafeMath.sol"; import {VersionedInitializable} from "../utils/VersionedInitializable.sol"; /** * @title LendToAaveMigrator * @notice This contract implements the migration from LEND to AAVE token * @author Aave */ contract LendToAaveMigrator is VersionedInitializable { using SafeMath for uint256; IERC20 public immutable AAVE; IERC20 public immutable LEND; uint256 public immutable LEND_AAVE_RATIO; uint256 public constant REVISION = 1; uint256 public _totalLendMigrated; /** * @dev emitted on migration * @param sender the caller of the migration * @param amount the amount being migrated */ event LendMigrated(address indexed sender, uint256 indexed amount); /** * @param aave the address of the AAVE token * @param lend the address of the LEND token * @param lendAaveRatio the exchange rate between LEND and AAVE */ constructor(IERC20 aave, IERC20 lend, uint256 lendAaveRatio) public { AAVE = aave; LEND = lend; LEND_AAVE_RATIO = lendAaveRatio; } /** * @dev initializes the implementation */ function initialize() public initializer { } /** * @dev returns true if the migration started */ function migrationStarted() external view returns(bool) { return lastInitializedRevision != 0; } /** * @dev executes the migration from LEND to AAVE. Users need to give allowance to this contract to transfer LEND before executing * this transaction. * @param amount the amount of LEND to be migrated */ function migrateFromLEND(uint256 amount) external { require(lastInitializedRevision != 0, "MIGRATION_NOT_STARTED"); _totalLendMigrated = _totalLendMigrated.add(amount); LEND.transferFrom(msg.sender, address(this), amount); AAVE.transfer(msg.sender, amount.div(LEND_AAVE_RATIO)); emit LendMigrated(msg.sender, amount); } /** * @dev returns the implementation revision * @return the implementation revision */ function getRevision() internal pure override returns (uint256) { return REVISION; } }
// SPDX-License-Identifier: agpl-3.0 pragma solidity 0.6.10; import "../interfaces/IERC20.sol"; contract DoubleTransferHelper { IERC20 public immutable AAVE; constructor(IERC20 aave) public { AAVE = aave; } function doubleSend(address to, uint256 amount1, uint256 amount2) external { AAVE.transfer(to, amount1); AAVE.transfer(to, amount2); } }
// SPDX-License-Identifier: agpl-3.0 pragma solidity 0.6.10; import "../open-zeppelin/ERC20.sol"; /** * @title ERC20Mintable * @dev ERC20 minting logic */ contract MintableErc20 is ERC20 { constructor(string memory name, string memory symbol, uint8 decimals) ERC20(name, symbol) public { _setupDecimals(decimals); } /** * @dev Function to mint tokens * @param value The amount of tokens to mint. * @return A boolean that indicates if the operation was successful. */ function mint(uint256 value) public returns (bool) { _mint(msg.sender, value); return true; } }
// SPDX-License-Identifier: agpl-3.0 pragma solidity 0.6.10; import {ITransferHook} from "../interfaces/ITransferHook.sol"; contract MockTransferHook is ITransferHook { event MockHookEvent(); function onTransfer(address from, address to, uint256 amount) external override { emit MockHookEvent(); } }
{ "metadata": { "useLiteralContent": false }, "optimizer": { "enabled": true, "runs": 200 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "abi" ] } }, "evmVersion": "istanbul", "libraries": {} }
Contract Security Audit
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[{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"previousAdmin","type":"address"},{"indexed":false,"internalType":"address","name":"newAdmin","type":"address"}],"name":"AdminChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"implementation","type":"address"}],"name":"Upgraded","type":"event"},{"stateMutability":"payable","type":"fallback"},{"inputs":[],"name":"admin","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newAdmin","type":"address"}],"name":"changeAdmin","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"implementation","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_logic","type":"address"},{"internalType":"address","name":"_admin","type":"address"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"initialize","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"_logic","type":"address"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"initialize","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"newImplementation","type":"address"}],"name":"upgradeTo","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newImplementation","type":"address"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"upgradeToAndCall","outputs":[],"stateMutability":"payable","type":"function"}]
Contract Creation Code
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Deployed Bytecode
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