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yield-utils-v2

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Utility contracts for Yield v2

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- - ci.yml
- - app.ts
  - generator.ts
- .gitignore
- config.json
- - .gitignore
  - .gitmodules
  - LICENSE-APACHE
  - LICENSE-MIT
  - README.md
- ERC3156
- openzeppelin-contracts
- - AccessControl.sol
  - Ownable.sol
- - IAccessControl.sol
  - IEmergencyBrake.sol
  - ITokenUpgrade.sol
  - IWETH9.sol
- - ERC20Mock.sol
  - ERC20RewardsMock.sol
  - FlashBorrower.sol
  - RestrictedERC20Mock.sol
  - WETH9Mock.sol
- - ERC20.sol
  - ERC20Permit.sol
  - ERC20Rewards.sol
  - ERC20RewardsWrapper.sol
  - IERC20.sol
  - IERC20Metadata.sol
  - IERC2612.sol
  - MinimalTransferHelper.sol
  - SafeERC20Namer.sol
  - TokenUpgrade.sol
  - TransferHelper.sol
- - AddressStringUtil.sol
  - Assert.sol
  - Cast.sol
  - EmergencyBrake.sol
  - IsContract.sol
  - Math.sol
  - Pausable.sol
  - Relay.sol
  - RevertMsgExtractor.sol
  - Timelock.sol
- - DummyWand.sol
- - TestConstants.sol
  - TestExtensions.sol
- AccessControl.t.sol
- Assert.t.sol
- EBrake.t.sol
- ERC20.t.sol
- ERC20Permit.t.sol
- ERC20Rewards.t.sol
- ERC20RewardsWrapper.t.sol
- Pausable.t.sol
- Timelock.t.sol
- TokenUpgrade.t.sol
- TransferHelper.t.sol
- WPow.t.sol
.gas-snapshot
.gitattributes
.gitignore
.gitmodules
.solcover.js
.solhint.json
.soliumignore
.soliumrc.json
foundry.toml
LICENSE.md
package.json
README.md
remappings.txt
tsconfig-publish.json
tsconfig.json
yarn.lock

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This repo contains minimal or updated versions of popular smart contracts used as utilities.

## Access
 - AccessControl: Hierarchical access control with function signatures as roles
 - Ownable: Contract access control to one address

## Cast
Safely cast between types.
 - Cast+Origin+Destination

## Math
Fixed point math with 18 decimals. Multiplication and division, rounded down as default, also rounded up as option.

# Token
 - ERC20: Minimal ERC20 token inspired on DSToken
 - ERC20Permit: ERC20 with ERC25612 off-chain signature support
 - ERC20Rewards: ERC20Permit embedding rewards of another ERC20 using the Unipool pattern
 - SafeERC20Namer: Derive ERC20 names safely regardless of underlying ERC20 implementation
 - MinimalTransferHelper: transfer ERC20 tokens safely regardless of underlying ERC20 implementation
 - TransferHelper: Same, but also transfer Ether and trasferFrom ERC20

# Utils
 - AddressStringUtil: Convert addresses to strings
 - IsContract: Return if an address contains bytecode
 - RevertMsgExtractor: Retrieve a revert message from a generic call return value
 - Timelock: Schedule batched transactions to be executed after approval
 - EmergencyBrake: Register AccessControl permissioning patterns to isolate contracts on emergencies
 - Relay: Group transactions to be executed on a single external call

## Audits
C4 audit - commit: 78693c5

Audit of Timelock.sol at 8ff8841 by Mudit Gupta: https://twitter.com/Mudit__Gupta/status/1429463910298525701?s=20

Audit of EmergencyBrake.sol [6e37565](https://github.com/yieldprotocol/yield-utils-v2/pull/54/commits/6e375651bee1c08fdac74999aa99874a56d1b396) by devtooligan: https://hackmd.io/@devtooligan/YieldEmergencyBrakeSecurityReview2022-10-11

## License
All files in this repository are released under the MIT license.