42 lines
1.5 KiB
Solidity
42 lines
1.5 KiB
Solidity
// Updated v3 lib to solidity >=0.7.6
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// SPDX-License-Identifier: GPL-2.0-or-later
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pragma solidity >=0.7.6;
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import "./PoolAddressV2.sol";
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import "@uniswap/v3-core/contracts/interfaces/IUniswapV3Pool.sol";
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/// @notice Provides validation for callbacks from Uniswap V3 Pools
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library CallbackValidationV2 {
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/// @notice Returns the address of a valid Uniswap V3 Pool
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/// @param factory The contract address of the Uniswap V3 factory
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/// @param tokenA The contract address of either token0 or token1
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/// @param tokenB The contract address of the other token
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/// @param fee The fee collected upon every swap in the pool, denominated in hundredths of a bip
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/// @return pool The V3 pool contract address
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function verifyCallback(
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address factory,
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address tokenA,
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address tokenB,
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uint24 fee
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) internal view returns (IUniswapV3Pool pool) {
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return
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verifyCallback(
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factory,
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PoolAddressV2.getPoolKey(tokenA, tokenB, fee)
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);
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}
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/// @notice Returns the address of a valid Uniswap V3 Pool
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/// @param factory The contract address of the Uniswap V3 factory
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/// @param poolKey The identifying key of the V3 pool
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/// @return pool The V3 pool contract address
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function verifyCallback(
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address factory,
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PoolAddressV2.PoolKey memory poolKey
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) internal view returns (IUniswapV3Pool pool) {
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pool = IUniswapV3Pool(PoolAddressV2.computeAddress(factory, poolKey));
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require(msg.sender == address(pool), "CV");
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}
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}
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