Synthetix Network Smart Contract Audit
Summary
Synthetix Network code consists of three primary contracts: Owned, Proxy, and Proxyable, along with an interface IERC20 and a contract ProxyERC20 implementing the ERC20 interface. Here’s a summary of each contract: Owned.sol: This contract provides basic ownership functionality. It allows for setting and changing the owner of the contract through a nomination process. Only the current owner can nominate a new owner, and the nominated owner must accept the nomination. Proxy.sol: This contract acts as a proxy for another contract (Proxyable). It can toggle between using DELEGATECALL and CALL to execute functions on the target contract. If a function is not recognized by the proxy, it forwards the call to the target contract. The proxy’s functionality can be controlled by the owner. Proxyable.sol: This contract is designed to work with Proxy. It allows for interaction with the underlying contract through the proxy. It includes modifiers to ensure that only the proxy can call certain functions. ProxyERC20.sol: This contract implements the ERC20 interface and acts as a proxy specifically for ERC20 token contracts. It forwards ERC20 function calls to the target contract. It ensures that contract-to-contract calls are compatible with the ERC20 standard. Overall, these contracts provide a framework for creating upgradeable contracts using proxies, with ownership control and support for ERC20 token functionality.
