WalletConnect with Wrapper xHOPR -> wxHOPR bug (transferAndCall func)

[mjadach-iv]

No description provided.

[QYuQianchen]

When a Safe wraps xHOPR to wxHOPR, it may fail due to lack of a callback handler. This issue has been reported to Safe and suggests safe-global/safe-smart-account#655 yet Safe team decides not to take any further actions. To support Safes to use our wrapper, an additional transaction must be done prior to the wrapping:

1. Check if the handler has been set on the registry . Call:
   • to: 0x1820a4b7618bde71dce8cdc73aab6c95905fad24
   • function: getInterfaceImplementer(address,bytes32)
   • params:
     • _addr (address): <safe_address>
     • _interfaceHash (bytes32): 0xb281fc8c12954d22544db45de3159a39272895b169a852b314f9cc762e44c53b
       If returning 0x0000000000000000000000000000000000000000 , it means that the handler hasn't been set, step 2 must be executed. Otherwise, skip step 2 and the Safe should be able to wrap xHOPR->wxHOPR
2. Add handler to the aforementioned registry. Note that the parameters are specifically for Gnosis chain. Send:
   • from: <safe_address>
   • to: 0x1820a4b7618bde71dce8cdc73aab6c95905fad24
   • function: setInterfaceImplementer(address,bytes32,address)
   • params:
     • _addr (address): <safe_address>
     • _interfaceHash (bytes32): 0xb281fc8c12954d22544db45de3159a39272895b169a852b314f9cc762e44c53b
     • _implementer (address): 0xe530e2f9decf24d7d42f011f54f1e9f8001e7619