Function: validateUserOp(UserOperation userOp, byte[32] userOpHash)

The function is invoked to verify the signature each time a new transaction arrives for the smart account, triggering the associated module. This function ensures that the leaf, encompassing data such as validUntil, validAfter, sessionValidationModule, and sessionKeyData, is integrated within the Merkle root established by the msg.sender (the smart account). Should this condition hold true, the validateSessionUserOp function will be invoked for the respective sessionValidationModule that provides support for the sessionKeyData.

Inputs

• userOp

  • Constraints: This contains the data of user operation that will be validated.

  • Impact: The user operation data that will be validated.

• userOpHash

  • Constraints: This will be checked by the validateSessionUserOp function.

  • Impact: The hash of user operation data that will be validated.

Branches and code coverage (including function calls)

Negative behavior

• userOp.signature does not contain moduleSignature.

  Negative test

• The untrusted sessionValidationModule.

  Negative test

• The invalid user operation.

  Negative test

Function call analysis

• ISessionValidationModule(sessionValidationModule).validateSessionUserOp(userOp,userOpHash,sessionKeyData,sessionKeySignature),

  • What is controllable? userOp, sessionKeyData, and sessionKeySignature.

  • If return value controllable, how is it used and how can it go wrong? The returned value means that the checked user operation is valid and can be executed.

  • What happens if it reverts, reenters, or does other unusual control flow? This will revert if the user operation data does not match the sessionKeyData.