Overview
Max Total Supply
16,000,000 AAVE
Holders
173,144 ( 0.004%)
Market
Price
$277.28 @ 0.070108 ETH (-1.39%)
Onchain Market Cap
$4,436,480,000.00
Circulating Supply Market Cap
$4,160,258,400.00
Other Info
Token Contract (WITH 18 Decimals)
Balance
0.623724 AAVEValue
$172.95 ( ~0.0437291242597446 Eth) [0.0000%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|---|---|---|---|---|
1 | Binance | AAVE-USDT | $276.62 0.0702290 Eth | $46,175,318.00 165,005.890 AAVE | 7.9037% |
2 | WhiteBIT | AAVE-USDT | $277.90 0.0703644 Eth | $30,559,570.00 109,964.088 AAVE | 5.2672% |
3 | Websea | AAVE-USDT | $277.63 0.0703258 Eth | $24,124,108.00 0.000 AAVE | 0.0000% |
4 | Bilaxy | AAVE-USDT | $277.71 0.0702656 Eth | $20,759,505.00 74,753.714 AAVE | 3.5807% |
5 | P2B | AAVE-USDT | $277.49 0.0702594 Eth | $14,212,370.00 51,217.528 AAVE | 2.4533% |
6 | Bitget | AAVE-USDT | $278.12 0.0703789 Eth | $11,545,804.00 41,254.426 AAVE | 1.9761% |
7 | BVOX | AAVE-USDT | $278.18 0.0704004 Eth | $10,456,936.00 37,402.734 AAVE | 1.7916% |
8 | Bybit | AAVE-USDT | $278.10 0.0703754 Eth | $10,243,930.00 36,622.085 AAVE | 1.7542% |
9 | Coinbase Exchange | AAVE-USD | $278.06 0.0703607 Eth | $10,098,864.00 36,319.009 AAVE | 1.7397% |
10 | Hibt | AAVE-USDT | $277.60 0.0703451 Eth | $9,183,015.00 32,799.270 AAVE | 1.5711% |
11 | Gate.io | AAVE-USDT | $278.18 0.0703941 Eth | $9,085,183.00 32,471.602 AAVE | 1.5554% |
12 | OKX | AAVE-USDT | $278.06 0.0703651 Eth | $8,812,844.00 31,481.442 AAVE | 1.5079% |
13 | Binance | AAVE-ETH | $277.98 0.0703443 Eth | $7,383,338.00 26,548.476 AAVE | 1.2717% |
14 | BTSE | AAVE-USDT | $277.94 0.0703348 Eth | $7,193,098.00 25,879.801 AAVE | 1.2396% |
15 | KuCoin | AAVE-USDT | $278.23 0.0704109 Eth | $6,933,028.00 24,917.949 AAVE | 1.1936% |
16 | XT.COM | AAVE-USDT | $276.52 0.0702197 Eth | $6,839,036.00 24,438.055 AAVE | 1.1706% |
17 | Bitunix | AAVE-USDT | $278.10 0.0703704 Eth | $5,801,211.00 20,860.274 AAVE | 0.9992% |
18 | DigiFinex | AAVE-USDT | $278.09 0.0703720 Eth | $5,736,232.00 20,627.285 AAVE | 0.9880% |
19 | CoinW | AAVE-USDT | $277.92 0.0703313 Eth | $4,727,006.00 17,008.339 AAVE | 0.8147% |
20 | Uniswap V3 (Ethereum) | 0X7FC66500C84A76AD7E9C93437BFC5AC33E2DDAE9-0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984 | $276.39 0.0699428 Eth | $4,437,964.00 16,071.194 0X7FC66500C84A76AD7E9C93437BFC5AC33E2DDAE9 | 0.7698% |
21 | Bullish | AAVE-USDC | $279.78 0.0707894 Eth | $4,119,370.00 14,731.152 AAVE | 0.7056% |
22 | Ourbit | AAVE-USDT | $278.13 0.0703780 Eth | $3,928,083.00 14,036.632 AAVE | 0.6723% |
23 | MEXC | AAVE-USDT | $277.06 0.0703275 Eth | $3,749,931.00 13,534.891 AAVE | 0.6483% |
24 | Biconomy.com | AAVE-USDT | $277.56 0.0703039 Eth | $3,717,264.00 13,288.373 AAVE | 0.6365% |
25 | LBank | AAVE-USDT | $278.22 0.0704055 Eth | $3,565,143.00 12,814.080 AAVE | 0.6138% |
26 | LATOKEN | AAVE-USDT | $277.11 0.0702171 Eth | $3,282,802.00 11,846.423 AAVE | 0.5674% |
27 | HTX | AAVE-USDT | $278.16 0.0703929 Eth | $3,153,993.00 11,276.983 AAVE | 0.5402% |
28 | Trubit | AAVE-USDT | $277.32 0.0702161 Eth | $2,399,221.00 8,576.503 AAVE | 0.4108% |
29 | Binance | AAVE-USDC | $278.20 0.0703999 Eth | $1,970,837.00 7,043.570 AAVE | 0.3374% |
30 | Uniswap V3 (Polygon) | 0XD6DF932A45C0F255F85145F286EA0B292B21C90B-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $277.89 0.0703869 Eth | $1,954,394.00 7,003.865 0XD6DF932A45C0F255F85145F286EA0B292B21C90B | 0.3355% |
31 | BYDFi | AAVE-USDT | $277.02 0.0701564 Eth | $1,865,452.00 6,734.106 AAVE | 0.3226% |
32 | XT.COM | AAVE-ETH | $278.01 0.0703432 Eth | $1,648,010.00 5,925.829 AAVE | 0.2838% |
33 | Coinstore | AAVE-USDT | $277.04 0.0702575 Eth | $1,625,142.00 5,798.426 AAVE | 0.2777% |
34 | Phemex | AAVE-USDT | $276.92 0.0701210 Eth | $1,555,061.00 5,615.604 AAVE | 0.2690% |
35 | WEEX | AAVE-USDT | $277.14 0.0703478 Eth | $1,502,479.00 5,421.437 AAVE | 0.2597% |
36 | Bitvavo | AAVE-EUR | $277.48 0.0703073 Eth | $1,063,455.00 3,832.577 AAVE | 0.1836% |
37 | Kraken | AAVE-USD | $277.73 0.0702833 Eth | $969,784.00 3,491.823 AAVE | 0.1673% |
38 | BingX | AAVE-USDT | $278.00 0.0703485 Eth | $939,862.00 3,362.522 AAVE | 0.1611% |
39 | BitDelta | AAVE-USDT | $278.10 0.0703801 Eth | $867,271.00 3,099.564 AAVE | 0.1485% |
40 | Uniswap V3 (Arbitrum One) | 0XBA5DDD1F9D7F570DC94A51479A000E3BCE967196-0X82AF49447D8A07E3BD95BD0D56F35241523FBAB1 | $281.07 0.0711937 Eth | $839,204.00 2,998.620 0XBA5DDD1F9D7F570DC94A51479A000E3BCE967196 | 0.1436% |
41 | Hotcoin | AAVE-USDT | $277.31 0.0702776 Eth | $825,078.00 2,975.305 AAVE | 0.1425% |
42 | WhiteBIT | AAVE-BTC | $278.45 0.0704538 Eth | $793,185.00 2,848.582 AAVE | 0.1364% |
43 | Binance | AAVE-FDUSD | $276.71 0.0701187 Eth | $713,874.00 2,557.764 AAVE | 0.1225% |
44 | Binance | AAVE-TRY | $278.92 0.0707977 Eth | $668,167.00 2,383.611 AAVE | 0.1142% |
45 | CoinEx | AAVE-USDT | $278.17 0.0703881 Eth | $569,805.00 2,037.085 AAVE | 0.0976% |
46 | BigONE | AAVE-USDT | $277.92 0.0703287 Eth | $523,007.00 1,881.871 AAVE | 0.0901% |
47 | tanX | AAVE-USDC | $276.44 0.0700471 Eth | $520,048.00 1,860.404 AAVE | 0.0891% |
48 | WEEX | AAVE-USDC | $277.03 0.0703214 Eth | $502,022.00 1,812.141 AAVE | 0.0868% |
49 | Uniswap V3 (Polygon) | 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359-0XD6DF932A45C0F255F85145F286EA0B292B21C90B | $277.89 0.0703869 Eth | $500,161.00 503,476.221 0X3C499C542CEF5E3811E1192CE70D8CC03D5C3359 | 24.1163% |
50 | PointPay | AAVE-USDT | $278.18 0.0703943 Eth | $493,082.00 1,762.165 AAVE | 0.0844% |
51 | Pionex | AAVE-USDT | $277.02 0.0702257 Eth | $488,163.00 1,743.872 AAVE | 0.0835% |
52 | Coinbase Exchange | AAVE-EUR | $276.93 0.0700849 Eth | $397,313.00 1,434.692 AAVE | 0.0687% |
53 | Uniswap V3 (BSC) | 0XFB6115445BFF7B52FEB98650C87F44907E58F802-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C | $275.56 0.0697986 Eth | $377,412.00 1,383.899 0XFB6115445BFF7B52FEB98650C87F44907E58F802 | 0.0663% |
54 | Nonkyc.io | AAVE-USDT | $277.40 0.0702008 Eth | $370,507.00 1,324.557 AAVE | 0.0634% |
55 | AscendEX (BitMax) | AAVE-USDT | $278.39 0.0704472 Eth | $362,971.00 1,303.837 AAVE | 0.0625% |
56 | itBit | AAVE-USD | $280.94 0.0712867 Eth | $283,455.00 1,008.951 AAVE | 0.0483% |
57 | Bitazza | AAVE-USDT | $279.15 0.0706409 Eth | $278,427.00 995.722 AAVE | 0.0477% |
58 | Dex-Trade | AAVE-ETH | $276.50 0.0701983 Eth | $250,736.00 906.820 AAVE | 0.0434% |
59 | Uniswap V3 (Ethereum) | 0X7FC66500C84A76AD7E9C93437BFC5AC33E2DDAE9-0X1F9840A85D5AF5BF1D1762F925BDADDC4201F984 | $280.50 0.0709843 Eth | $250,613.00 906.623 0X7FC66500C84A76AD7E9C93437BFC5AC33E2DDAE9 | 0.0434% |
60 | Uniswap V3 (Polygon) | 0XD6DF932A45C0F255F85145F286EA0B292B21C90B-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $276.72 0.0700924 Eth | $230,503.00 841.117 0XD6DF932A45C0F255F85145F286EA0B292B21C90B | 0.0403% |
61 | Bitcointry | AAVE-USDT | $276.84 0.0701603 Eth | $220,892.00 789.659 AAVE | 0.0378% |
62 | Uniswap V3 (Polygon) | 0XD6DF932A45C0F255F85145F286EA0B292B21C90B-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $278.27 0.0704183 Eth | $200,860.00 721.736 0XD6DF932A45C0F255F85145F286EA0B292B21C90B | 0.0346% |
63 | WhiteBIT | AAVE-TRY | $278.54 0.0705264 Eth | $189,689.00 681.000 AAVE | 0.0326% |
64 | Uniswap V3 (Polygon) | 0XD6DF932A45C0F255F85145F286EA0B292B21C90B-0XC2132D05D31C914A87C6611C10748AEB04B58E8F | $277.85 0.0703768 Eth | $179,657.00 642.689 0XD6DF932A45C0F255F85145F286EA0B292B21C90B | 0.0308% |
65 | Coinbase Exchange | AAVE-BTC | $277.04 0.0701031 Eth | $171,558.00 619.248 AAVE | 0.0297% |
66 | PointPay | AAVE-BTC | $278.25 0.0704035 Eth | $158,127.00 568.362 AAVE | 0.0272% |
67 | Bitexen | AAVE-TRY | $275.33 0.0698892 Eth | $152,858.00 555.183 AAVE | 0.0266% |
68 | Bitso | AAVE-USD | $277.29 0.0701692 Eth | $152,752.00 550.880 AAVE | 0.0264% |
69 | Quickswap (v3) | 0XD6DF932A45C0F255F85145F286EA0B292B21C90B-0X7CEB23FD6BC0ADD59E62AC25578270CFF1B9F619 | $278.76 0.0705425 Eth | $130,813.00 469.449 0XD6DF932A45C0F255F85145F286EA0B292B21C90B | 0.0225% |
70 | Gemini | AAVE-USD | $277.14 0.0701311 Eth | $118,987.00 429.345 AAVE | 0.0206% |
71 | Coinbase Exchange | AAVE-GBP | $277.46 0.0702099 Eth | $99,100.00 357.164 AAVE | 0.0171% |
72 | Uniswap V3 (Polygon) | 0XD6DF932A45C0F255F85145F286EA0B292B21C90B-0X2791BCA1F2DE4661ED88A30C99A7A9449AA84174 | $277.89 0.0703869 Eth | $97,540.00 348.521 0XD6DF932A45C0F255F85145F286EA0B292B21C90B | 0.0167% |
73 | Nonkyc.io | AAVE-ETH | $276.94 0.0701468 Eth | $87,852.00 316.361 AAVE | 0.0152% |
74 | LFJ | 0X63A72806098BD3D9520CC43356DD78AFE5D386D9-0XB31F66AA3C1E785363F0875A1B74E27B85FD66C7 | $277.57 0.0702450 Eth | $80,019.00 286.957 0X63A72806098BD3D9520CC43356DD78AFE5D386D9 | 0.0137% |
75 | Uniswap V3 (Optimism) | 0X76FB31FB4AF56892A25E32CFC43DE717950C9278-0X4200000000000000000000000000000000000006 | $276.68 0.0700153 Eth | $67,009.00 243.809 0X76FB31FB4AF56892A25E32CFC43DE717950C9278 | 0.0117% |
76 | OKX | AAVE-USDC | $278.17 0.0703924 Eth | $60,246.00 215.544 AAVE | 0.0103% |
77 | KuCoin | AAVE-BTC | $277.01 0.0701012 Eth | $51,506.00 185.934 AAVE | 0.0089% |
78 | PancakeSwap V3 (BSC) | 0XFB6115445BFF7B52FEB98650C87F44907E58F802-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C | $280.08 0.0708765 Eth | $42,203.00 153.893 0XFB6115445BFF7B52FEB98650C87F44907E58F802 | 0.0074% |
79 | Uniswap V3 (Arbitrum One) | 0XAF88D065E77C8CC2239327C5EDB3A432268E5831-0XBA5DDD1F9D7F570DC94A51479A000E3BCE967196 | $281.07 0.0711937 Eth | $40,379.00 40,363.700 0XAF88D065E77C8CC2239327C5EDB3A432268E5831 | 1.9334% |
80 | Uniswap V3 (Arbitrum One) | 0XBA5DDD1F9D7F570DC94A51479A000E3BCE967196-0XFD086BC7CD5C481DCC9C85EBE478A1C0B69FCBB9 | $281.07 0.0711937 Eth | $33,753.00 119.044 0XBA5DDD1F9D7F570DC94A51479A000E3BCE967196 | 0.0057% |
81 | Nonkyc.io | AAVE-BTC | $278.36 0.0705065 Eth | $27,413.00 98.510 AAVE | 0.0047% |
82 | Binance US | AAVE-USDT | $279.41 0.0707457 Eth | $25,985.00 92.999 AAVE | 0.0045% |
83 | Uniswap V3 (Polygon) | 0XD6DF932A45C0F255F85145F286EA0B292B21C90B-0X1BFD67037B42CF73ACF2047067BD4F2C47D9BFD6 | $277.44 0.0701986 Eth | $25,404.00 91.041 0XD6DF932A45C0F255F85145F286EA0B292B21C90B | 0.0044% |
84 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XD6DF932A45C0F255F85145F286EA0B292B21C90B | $277.89 0.0703869 Eth | $19,956.34 768.507 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0368% |
85 | Mercado Bitcoin | AAVE-BRL | $281.33 0.0711817 Eth | $17,596.00 62.547 AAVE | 0.0030% |
86 | Uniswap V3 (BSC) | 0XFB6115445BFF7B52FEB98650C87F44907E58F802-0X55D398326F99059FF775485246999027B3197955 | $279.52 0.0709286 Eth | $12,772.40 45.115 0XFB6115445BFF7B52FEB98650C87F44907E58F802 | 0.0022% |
87 | Uniswap V3 (Ethereum) | 0X7FC66500C84A76AD7E9C93437BFC5AC33E2DDAE9-0XA0B86991C6218B36C1D19D4A2E9EB0CE3606EB48 | $280.60 0.0711128 Eth | $12,462.80 44.478 0X7FC66500C84A76AD7E9C93437BFC5AC33E2DDAE9 | 0.0021% |
88 | Uniswap V3 (Polygon) | 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39-0XD6DF932A45C0F255F85145F286EA0B292B21C90B | $278.91 0.0708326 Eth | $10,538.70 405.502 0X53E0BCA35EC356BD5DDDFEBBD1FC0FD03FABAD39 | 0.0194% |
89 | Gate.io | AAVE-ETH | $278.87 0.0705645 Eth | $7,137.45 25.700 AAVE | 0.0012% |
90 | Uniswap V3 (Polygon) | 0XB33EAAD8D922B1083446DC23F610C2567FB5180F-0XD6DF932A45C0F255F85145F286EA0B292B21C90B | $278.02 0.0703449 Eth | $3,960.42 215.086 0XB33EAAD8D922B1083446DC23F610C2567FB5180F | 0.0103% |
91 | Quickswap | 0XDF7837DE1F2FA4631D716CF2502F8B230F1DCC32-0XD6DF932A45C0F255F85145F286EA0B292B21C90B | $276.10 0.0698678 Eth | $3,362.79 513,118.850 0XDF7837DE1F2FA4631D716CF2502F8B230F1DCC32 | 24.5781% |
92 | ApeSwap | 0XFB6115445BFF7B52FEB98650C87F44907E58F802-0XBB4CDB9CBD36B01BD1CBAEBF2DE08D9173BC095C | $277.86 0.0703190 Eth | $3,189.27 11.671 0XFB6115445BFF7B52FEB98650C87F44907E58F802 | 0.0006% |
93 | CoinEx | AAVE-BTC | $278.22 0.0704818 Eth | $2,930.08 10.513 AAVE | 0.0005% |
94 | CoinEx | AAVE-USDC | $277.27 0.0701598 Eth | $2,592.01 9.247 AAVE | 0.0004% |
95 | Uniswap V3 (Optimism) | 0X0B2C639C533813F4AA9D7837CAF62653D097FF85-0X76FB31FB4AF56892A25E32CFC43DE717950C9278 | $279.25 0.0707046 Eth | $1,872.27 1,855.334 0X0B2C639C533813F4AA9D7837CAF62653D097FF85 | 0.0889% |
96 | Uniswap V3 (Arbitrum One) | 0XBA5DDD1F9D7F570DC94A51479A000E3BCE967196-0XF97F4DF75117A78C1A5A0DBB814AF92458539FB4 | $278.58 0.0707153 Eth | $1,866.72 6.577 0XBA5DDD1F9D7F570DC94A51479A000E3BCE967196 | 0.0003% |
97 | Uniswap V3 (Polygon) | 0XC3C7D422809852031B44AB29EEC9F1EFF2A58756-0XD6DF932A45C0F255F85145F286EA0B292B21C90B | $277.92 0.0705473 Eth | $1,102.95 518.424 0XC3C7D422809852031B44AB29EEC9F1EFF2A58756 | 0.0248% |
98 | Uniswap V3 (Polygon) | 0X0B3F868E0BE5597D5DB7FEB59E1CADBB0FDDA50A-0XD6DF932A45C0F255F85145F286EA0B292B21C90B | $278.91 0.0708326 Eth | $430.07 181.586 0X0B3F868E0BE5597D5DB7FEB59E1CADBB0FDDA50A | 0.0087% |
99 | Uniswap V3 (Optimism) | 0X76FB31FB4AF56892A25E32CFC43DE717950C9278-0X68F180FCCE6836688E9084F035309E29BF0A2095 | $278.37 0.0704815 Eth | $305.63 1.112 0X76FB31FB4AF56892A25E32CFC43DE717950C9278 | 0.0001% |
100 | Quickswap (v3) | 0XD6DF932A45C0F255F85145F286EA0B292B21C90B-0X0D500B1D8E8EF31E21C99D1DB9A6444D3ADF1270 | $277.96 0.0703293 Eth | $258.99 0.947 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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