Merge pull request aave#105 from aave/feat/3.0.1

Feat/3.0.1

contracts/adapters/paraswap/BaseParaSwapAdapter.sol

@@ -1,5 +1,5 @@
-// SPDX-License-Identifier: agpl-3.0
-pragma solidity 0.8.10;
+// SPDX-License-Identifier: AGPL-3.0
+pragma solidity ^0.8.10;
 
 import {DataTypes} from '@aave/core-v3/contracts/protocol/libraries/types/DataTypes.sol';
 import {FlashLoanSimpleReceiverBase} from '@aave/core-v3/contracts/flashloan/base/FlashLoanSimpleReceiverBase.sol';

contracts/adapters/paraswap/BaseParaSwapBuyAdapter.sol

@@ -1,5 +1,5 @@
-// SPDX-License-Identifier: agpl-3.0
-pragma solidity 0.8.10;
+// SPDX-License-Identifier: AGPL-3.0
+pragma solidity ^0.8.10;
 
 import {SafeMath} from '@aave/core-v3/contracts/dependencies/openzeppelin/contracts/SafeMath.sol';
 import {PercentageMath} from '@aave/core-v3/contracts/protocol/libraries/math/PercentageMath.sol';

contracts/adapters/paraswap/BaseParaSwapSellAdapter.sol

@@ -1,5 +1,5 @@
-// SPDX-License-Identifier: agpl-3.0
-pragma solidity 0.8.10;
+// SPDX-License-Identifier: AGPL-3.0
+pragma solidity ^0.8.10;
 
 import {SafeMath} from '@aave/core-v3/contracts/dependencies/openzeppelin/contracts/SafeMath.sol';
 import {PercentageMath} from '@aave/core-v3/contracts/protocol/libraries/math/PercentageMath.sol';

contracts/adapters/paraswap/ParaSwapLiquiditySwapAdapter.sol

@@ -1,5 +1,5 @@
-// SPDX-License-Identifier: agpl-3.0
-pragma solidity 0.8.10;
+// SPDX-License-Identifier: AGPL-3.0
+pragma solidity ^0.8.10;
 
 import {IERC20Detailed} from '@aave/core-v3/contracts/dependencies/openzeppelin/contracts/IERC20Detailed.sol';
 import {IERC20WithPermit} from '@aave/core-v3/contracts/interfaces/IERC20WithPermit.sol';

contracts/adapters/paraswap/ParaSwapRepayAdapter.sol

@@ -1,5 +1,5 @@
-// SPDX-License-Identifier: agpl-3.0
-pragma solidity 0.8.10;
+// SPDX-License-Identifier: AGPL-3.0
+pragma solidity ^0.8.10;
 
 import {DataTypes} from '@aave/core-v3/contracts/protocol/libraries/types/DataTypes.sol';
 import {IERC20Detailed} from '@aave/core-v3/contracts/dependencies/openzeppelin/contracts/IERC20Detailed.sol';

contracts/adapters/paraswap/interfaces/IParaSwapAugustus.sol

@@ -1,5 +1,5 @@
-// SPDX-License-Identifier: agpl-3.0
-pragma solidity 0.8.10;
+// SPDX-License-Identifier: AGPL-3.0
+pragma solidity ^0.8.10;
 
 interface IParaSwapAugustus {
   function getTokenTransferProxy() external view returns (address);

contracts/adapters/paraswap/interfaces/IParaSwapAugustusRegistry.sol

@@ -1,5 +1,5 @@
-// SPDX-License-Identifier: agpl-3.0
-pragma solidity 0.8.10;
+// SPDX-License-Identifier: AGPL-3.0
+pragma solidity ^0.8.10;
 
 interface IParaSwapAugustusRegistry {
   function isValidAugustus(address augustus) external view returns (bool);

contracts/dependencies/openzeppelin/ReentrancyGuard.sol

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MIT
 
-pragma solidity 0.8.10;
+pragma solidity ^0.8.10;
 
 /**
  * @dev Contract module that helps prevent reentrant calls to a function.

contracts/libraries/DataTypesHelper.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: AGPL-3.0
-pragma solidity 0.8.10;
+pragma solidity ^0.8.10;
 
 import {IERC20} from '@aave/core-v3/contracts/dependencies/openzeppelin/contracts/IERC20.sol';
 import {DataTypes} from '@aave/core-v3/contracts/protocol/libraries/types/DataTypes.sol';

contracts/misc/UiIncentiveDataProviderV3.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: AGPL-3.0
-pragma solidity 0.8.10;
+pragma solidity ^0.8.10;
 
 import {IERC20Detailed} from '@aave/core-v3/contracts/dependencies/openzeppelin/contracts/IERC20Detailed.sol';
 import {IPoolAddressesProvider} from '@aave/core-v3/contracts/interfaces/IPoolAddressesProvider.sol';

contracts/misc/UiPoolDataProviderV3.sol

@@ -1,5 +1,5 @@
-// SPDX-License-Identifier: agpl-3.0
-pragma solidity 0.8.10;
+// SPDX-License-Identifier: AGPL-3.0
+pragma solidity ^0.8.10;
 
 import {IERC20Detailed} from '@aave/core-v3/contracts/dependencies/openzeppelin/contracts/IERC20Detailed.sol';
 import {IPoolAddressesProvider} from '@aave/core-v3/contracts/interfaces/IPoolAddressesProvider.sol';

contracts/misc/WalletBalanceProvider.sol

@@ -1,5 +1,5 @@
-// SPDX-License-Identifier: agpl-3.0
-pragma solidity 0.8.10;
+// SPDX-License-Identifier: AGPL-3.0
+pragma solidity ^0.8.10;
 
 import {Address} from '@aave/core-v3/contracts/dependencies/openzeppelin/contracts/Address.sol';
 import {IERC20} from '@aave/core-v3/contracts/dependencies/openzeppelin/contracts/IERC20.sol';

contracts/misc/WrappedTokenGatewayV3.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: AGPL-3.0
-pragma solidity 0.8.10;
+pragma solidity ^0.8.10;
 
 import {Ownable} from '@aave/core-v3/contracts/dependencies/openzeppelin/contracts/Ownable.sol';
 import {IERC20} from '@aave/core-v3/contracts/dependencies/openzeppelin/contracts/IERC20.sol';

contracts/misc/interfaces/IEACAggregatorProxy.sol

@@ -1,5 +1,5 @@
-// SPDX-License-Identifier: agpl-3.0
-pragma solidity 0.8.10;
+// SPDX-License-Identifier: AGPL-3.0
+pragma solidity ^0.8.10;
 
 interface IEACAggregatorProxy {
   function decimals() external view returns (uint8);

contracts/misc/interfaces/IERC20DetailedBytes.sol

@@ -1,5 +1,5 @@
-// SPDX-License-Identifier: agpl-3.0
-pragma solidity 0.8.10;
+// SPDX-License-Identifier: AGPL-3.0
+pragma solidity ^0.8.10;
 
 import {IERC20} from '@aave/core-v3/contracts/dependencies/openzeppelin/contracts/IERC20.sol';
 

contracts/misc/interfaces/IUiIncentiveDataProviderV3.sol

@@ -1,5 +1,5 @@
-// SPDX-License-Identifier: agpl-3.0
-pragma solidity 0.8.10;
+// SPDX-License-Identifier: AGPL-3.0
+pragma solidity ^0.8.10;
 
 import {IPoolAddressesProvider} from '@aave/core-v3/contracts/interfaces/IPoolAddressesProvider.sol';
 

contracts/misc/interfaces/IUiPoolDataProviderV3.sol

@@ -1,5 +1,5 @@
-// SPDX-License-Identifier: agpl-3.0
-pragma solidity 0.8.10;
+// SPDX-License-Identifier: AGPL-3.0
+pragma solidity ^0.8.10;
 
 import {IPoolAddressesProvider} from '@aave/core-v3/contracts/interfaces/IPoolAddressesProvider.sol';
 

contracts/misc/interfaces/IWETH.sol

@@ -1,5 +1,5 @@
-// SPDX-License-Identifier: agpl-3.0
-pragma solidity 0.8.10;
+// SPDX-License-Identifier: AGPL-3.0
+pragma solidity ^0.8.10;
 
 interface IWETH {
   function deposit() external payable;

contracts/misc/interfaces/IWrappedTokenGatewayV3.sol

@@ -1,5 +1,5 @@
-// SPDX-License-Identifier: agpl-3.0
-pragma solidity 0.8.10;
+// SPDX-License-Identifier: AGPL-3.0
+pragma solidity ^0.8.10;
 
 interface IWrappedTokenGatewayV3 {
   function depositETH(

contracts/mocks/ATokenMock.sol

@@ -1,5 +1,5 @@
-// SPDX-License-Identifier: agpl-3.0
-pragma solidity 0.8.10;
+// SPDX-License-Identifier: AGPL-3.0
+pragma solidity ^0.8.10;
 
 import {IRewardsController} from '../rewards/interfaces/IRewardsController.sol';
 

contracts/mocks/MockBadTransferStrategy.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: AGPL-3.0
-pragma solidity 0.8.10;
+pragma solidity ^0.8.10;
 
 import {ITransferStrategyBase} from '../rewards/interfaces/ITransferStrategyBase.sol';
 import {TransferStrategyBase} from '../rewards/transfer-strategies/TransferStrategyBase.sol';

contracts/mocks/attacks/SelfdestructTransfer.sol

@@ -1,5 +1,5 @@
-// SPDX-License-Identifier: agpl-3.0
-pragma solidity 0.8.10;
+// SPDX-License-Identifier: AGPL-3.0
+pragma solidity ^0.8.10;
 
 contract SelfdestructTransfer {
   function destroyAndTransfer(address payable to) external payable {

contracts/mocks/swap/MockParaSwapAugustus.sol

@@ -1,5 +1,5 @@
-// SPDX-License-Identifier: agpl-3.0
-pragma solidity 0.8.10;
+// SPDX-License-Identifier: AGPL-3.0
+pragma solidity ^0.8.10;
 
 import {IParaSwapAugustus} from '../../adapters/paraswap/interfaces/IParaSwapAugustus.sol';
 import {MockParaSwapTokenTransferProxy} from './MockParaSwapTokenTransferProxy.sol';

contracts/mocks/swap/MockParaSwapAugustusRegistry.sol

@@ -1,5 +1,5 @@
-// SPDX-License-Identifier: agpl-3.0
-pragma solidity 0.8.10;
+// SPDX-License-Identifier: AGPL-3.0
+pragma solidity ^0.8.10;
 
 import {IParaSwapAugustusRegistry} from '../../adapters/paraswap/interfaces/IParaSwapAugustusRegistry.sol';
 

contracts/mocks/swap/MockParaSwapTokenTransferProxy.sol

@@ -1,5 +1,5 @@
-// SPDX-License-Identifier: agpl-3.0
-pragma solidity 0.8.10;
+// SPDX-License-Identifier: AGPL-3.0
+pragma solidity ^0.8.10;
 
 import {Ownable} from '@aave/core-v3/contracts/dependencies/openzeppelin/contracts/Ownable.sol';
 import {IERC20} from '@aave/core-v3/contracts/dependencies/openzeppelin/contracts/IERC20.sol';

contracts/rewards/EmissionManager.sol

@@ -1,5 +1,5 @@
-// SPDX-License-Identifier: agpl-3.0
-pragma solidity 0.8.10;
+// SPDX-License-Identifier: AGPL-3.0
+pragma solidity ^0.8.10;
 
 import {Ownable} from '@aave/core-v3/contracts/dependencies/openzeppelin/contracts/Ownable.sol';
 import {IEACAggregatorProxy} from '../misc/interfaces/IEACAggregatorProxy.sol';

contracts/rewards/RewardsController.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: BUSL-1.1
-pragma solidity 0.8.10;
+pragma solidity ^0.8.10;
 
 import {VersionedInitializable} from '@aave/core-v3/contracts/protocol/libraries/aave-upgradeability/VersionedInitializable.sol';
 import {SafeCast} from '@aave/core-v3/contracts/dependencies/openzeppelin/contracts/SafeCast.sol';
@@ -18,7 +18,7 @@ import {IEACAggregatorProxy} from '../misc/interfaces/IEACAggregatorProxy.sol';
 contract RewardsController is RewardsDistributor, VersionedInitializable, IRewardsController {
   using SafeCast for uint256;
 
-  uint256 public constant REVISION = 1;
+  uint256 public constant REVISION = 2;
 
   // This mapping allows whitelisted addresses to claim on behalf of others
   // useful for contracts that hold tokens to be rewarded but don't have any native logic to claim Liquidity Mining rewards
@@ -41,8 +41,6 @@ contract RewardsController is RewardsDistributor, VersionedInitializable, IRewar
     _;
   }
 
-  constructor(address emissionManager) RewardsDistributor(emissionManager) {}
-
   /**
    * @dev Initialize for RewardsController
    * @param emissionManager address of the EmissionManager

contracts/rewards/RewardsDistributor.sol

@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: BUSL-1.1
-pragma solidity 0.8.10;
+pragma solidity ^0.8.10;
 
+import {IScaledBalanceToken} from '@aave/core-v3/contracts/interfaces/IScaledBalanceToken.sol';
 import {IERC20Detailed} from '@aave/core-v3/contracts/dependencies/openzeppelin/contracts/IERC20Detailed.sol';
 import {SafeCast} from '@aave/core-v3/contracts/dependencies/openzeppelin/contracts/SafeCast.sol';
 import {IRewardsDistributor} from './interfaces/IRewardsDistributor.sol';
@@ -13,30 +14,26 @@ import {RewardsDataTypes} from './libraries/RewardsDataTypes.sol';
  **/
 abstract contract RewardsDistributor is IRewardsDistributor {
   using SafeCast for uint256;
-  // manager of incentives
+  // Manager of incentives
   address internal _emissionManager;
 
-  // asset => AssetData
+  // Map of rewarded asset addresses and their data (assetAddress => assetData)
   mapping(address => RewardsDataTypes.AssetData) internal _assets;
 
-  // reward => enabled
+  // Map of reward assets (rewardAddress => enabled)
   mapping(address => bool) internal _isRewardEnabled;
 
-  // global rewards list
+  // Rewards list
   address[] internal _rewardsList;
 
-  //global assets list
+  // Assets list
   address[] internal _assetsList;
 
   modifier onlyEmissionManager() {
     require(msg.sender == _emissionManager, 'ONLY_EMISSION_MANAGER');
     _;
   }
 
-  constructor(address emissionManager) {
-    _setEmissionManager(emissionManager);
-  }
-
   /// @inheritdoc IRewardsDistributor
   function getRewardsData(address asset, address reward)
     public
@@ -57,6 +54,22 @@ abstract contract RewardsDistributor is IRewardsDistributor {
     );
   }
 
+  /// @inheritdoc IRewardsDistributor
+  function getAssetIndex(address asset, address reward)
+    external
+    view
+    override
+    returns (uint256, uint256)
+  {
+    RewardsDataTypes.RewardData storage rewardData = _assets[asset].rewards[reward];
+    return
+      _getAssetIndex(
+        rewardData,
+        IScaledBalanceToken(asset).scaledTotalSupply(),
+        10**_assets[asset].decimals
+      );
+  }
+
   /// @inheritdoc IRewardsDistributor
   function getDistributionEnd(address asset, address reward)
     external
@@ -186,7 +199,7 @@ abstract contract RewardsDistributor is IRewardsDistributor {
 
       (uint256 newIndex, ) = _updateRewardData(
         rewardConfig,
-        IERC20Detailed(asset).totalSupply(),
+        IScaledBalanceToken(asset).scaledTotalSupply(),
         10**decimals
       );
 
@@ -405,7 +418,10 @@ abstract contract RewardsDistributor is IRewardsDistributor {
     // Add unrealized rewards
     for (uint256 i = 0; i < userAssetBalances.length; i++) {
       if (userAssetBalances[i].userBalance == 0) {
-        unclaimedRewards += _assets[userAssetBalances[i].asset].rewards[reward].usersData[user].accrued;
+        unclaimedRewards += _assets[userAssetBalances[i].asset]
+          .rewards[reward]
+          .usersData[user]
+          .accrued;
       } else {
         unclaimedRewards +=
           _getPendingRewards(user, reward, userAssetBalances[i]) +
@@ -466,6 +482,7 @@ abstract contract RewardsDistributor is IRewardsDistributor {
 
   /**
    * @dev Calculates the next value of an specific distribution index, with validations
+   * @param rewardData Storage pointer to the distribution reward config
    * @param totalSupply of the asset being rewarded
    * @param assetUnit One unit of asset (10**decimals)
    * @return The new index.

contracts/rewards/interfaces/IEmissionManager.sol

@@ -1,5 +1,5 @@
-// SPDX-License-Identifier: agpl-3.0
-pragma solidity 0.8.10;
+// SPDX-License-Identifier: AGPL-3.0
+pragma solidity ^0.8.10;
 
 import {IEACAggregatorProxy} from '../../misc/interfaces/IEACAggregatorProxy.sol';
 import {RewardsDataTypes} from '../libraries/RewardsDataTypes.sol';

contracts/rewards/interfaces/IPullRewardsTransferStrategy.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: AGPL-3.0
-pragma solidity 0.8.10;
+pragma solidity ^0.8.10;
 
 import {ITransferStrategyBase} from './ITransferStrategyBase.sol';
 

contracts/rewards/interfaces/IRewardsController.sol

@@ -1,5 +1,5 @@
-// SPDX-License-Identifier: agpl-3.0
-pragma solidity 0.8.10;
+// SPDX-License-Identifier: AGPL-3.0
+pragma solidity ^0.8.10;
 
 import {IRewardsDistributor} from './IRewardsDistributor.sol';
 import {ITransferStrategyBase} from './ITransferStrategyBase.sol';

contracts/rewards/interfaces/IRewardsDistributor.sol

@@ -1,5 +1,5 @@
-// SPDX-License-Identifier: agpl-3.0
-pragma solidity 0.8.10;
+// SPDX-License-Identifier: AGPL-3.0
+pragma solidity ^0.8.10;
 
 /**
  * @title IRewardsDistributor
@@ -119,6 +119,21 @@ interface IRewardsDistributor {
       uint256
     );
 
+  /**
+   * @dev Calculates the next value of an specific distribution index, with validations.
+   * @param asset The incentivized asset
+   * @param reward The reward token of the incentivized asset
+   * @return The old index of the asset distribution
+   * @return The new index of the asset distribution
+   **/
+  function getAssetIndex(address asset, address reward)
+    external
+    view
+    returns(
+      uint256,
+      uint256
+    );
+
   /**
    * @dev Returns the list of available reward token addresses of an incentivized asset
    * @param asset The incentivized asset

contracts/rewards/interfaces/IStakedToken.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: AGPL-3.0
-pragma solidity 0.8.10;
+pragma solidity ^0.8.10;
 
 interface IStakedToken {
   function STAKED_TOKEN() external view returns (address);

contracts/rewards/interfaces/IStakedTokenTransferStrategy.sol

@@ -1,5 +1,5 @@
-// SPDX-License-Identifier: agpl-3.0
-pragma solidity 0.8.10;
+// SPDX-License-Identifier: AGPL-3.0
+pragma solidity ^0.8.10;
 
 import {IStakedToken} from '../interfaces/IStakedToken.sol';
 import {ITransferStrategyBase} from './ITransferStrategyBase.sol';