https://github.com/bloq/sol-qualify-lp

Solidity/Ethereum dapp to qualify LP tokens as Uniswap or Balancer LPs
https://github.com/bloq/sol-qualify-lp

balancer dapp defi ethereum ethereum-contracts solidity solidity-contracts uniswap

Last synced: 10 days ago
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Solidity/Ethereum dapp to qualify LP tokens as Uniswap or Balancer LPs

• Host: GitHub
• URL: https://github.com/bloq/sol-qualify-lp
• Owner: bloq
• License: mit
• Created: 2020-09-19T18:16:18.000Z (over 4 years ago)
• Default Branch: master
• Last Pushed: 2020-09-26T22:58:56.000Z (over 4 years ago)
• Last Synced: 2024-11-14T17:47:09.828Z (2 months ago)
• Topics: balancer, dapp, defi, ethereum, ethereum-contracts, solidity, solidity-contracts, uniswap
• Language: Solidity
• Homepage:
• Size: 137 KB
• Stars: 3
• Watchers: 3
• Forks: 1
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# qualify-lp

## Summary

Perform simple ABI checks, to determine if an address seems to behave

like a Uniswap or Balancer LP pool token.

## Using

### Step 1 - qualify LP token

Call `qualifyUniswapLP()` or `qualifyBalancerLP()` to validate an LP token, and add it to the database.

### Step 2 - query qualifications database

Import the interface file `IQualifyLP.sol` into a solidity contract, then treat as a simple mapping:

```

    function do_something_with_lp_token(address lpToken) internal returns (bool) {

	address LPQualAddr = address(0xeE87996440515154fb913Fada7aBB4F2Caecb14f);

	IQualifyLP lpQual = IQualifyLP(LPQualAddr);

	uint256 constant LP_UNISWAP = 1;

	// check QualifyLP's mapping of validated tokens

	uint256 qualResult = lpQual.qualified(lpToken);

	// require that lpToken is a Uniswap-like pair liquidity pool contract

	// Requires someone MUST have previously called qualifyUniswapLP() at some

	// point in the past.

	require(qualResult == LP_UNISWAP);

    }

```

## Deployment

Ethereum mainnet deployment, v0.9.0: [0xeE87996440515154fb913Fada7aBB4F2Caecb14f](https://etherscan.io/address/0xee87996440515154fb913fada7abb4f2caecb14f)

## Caveats

This can only provide a minimum guarantee that the address provided _seems to behave like_ a Uniswap

or Balancer pool token.  A fork such as SushiSwap, using the same

ABI as Uniswap, will pass these qualifications (there is a plan to fix this limitation in the next version,

by using the Uniswap Router).