ExtensionBase

ExtensionBase

This shouldn’t be used directly, it should be extended by child contracts

This contract setups the base of every Extension contract (including proxies). It defines a set data structure for holding important information about the current Extension registration instance. This includes the current Token address, the current Extension global address and an “authorized caller” (callsite).

The ExtensionBase also defines a _msgSender() function, this function should be used instead of the msg.sender variable. _msgSender() has a different behavior depending on who the msg.sender variable is, this is to allow both meta-transactions and proxy forwarding

The “callsite” should be considered an admin-style address. See ExtensionProxy for more information

The ExtensionBase also provides several function modifiers to restrict function invokation

onlyToken()

A function modifier to only allow the registered token to execute this function

onlyAuthorizedCaller()

A function modifier to only allow the admin to execute this function

onlyAuthorizedCallerOrSelf()

A function modifier to only allow the admin or ourselves to execute this function

_proxyData() → struct ExtensionBase.ProxyData ds (internal)

The ProxyData struct stored in this registered Extension instance.

_extensionAddress() → address (internal)

The current Extension logic contract address

_tokenAddress() → address payable (internal)

The current token address that registered this extension instance

_tokenStandard() → enum TokenStandard (internal)

The current token standard that registered this extension instance

_authorizedCaller() → address (internal)

The current admin address for this registered extension instance

_msgSender() → address ret (internal)

Get the current msg.sender for the current CALL context

receive() (external)

ProxyData

address token

address extension

address callsite

bool initialized

enum TokenStandard standard