Balance Capability target check

[janezpodhostnik]

Issue To Be Solved

The target of the balance capability in Flow core contracts here:

• flow-core-contracts/contracts/FlowStorageFees.cdc

  Line 69 in ed4310c

  .getCapability<&FlowToken.Vault{FungibleToken.Balance}>(/public/flowTokenBalance)!

• flow-core-contracts/contracts/FlowStorageFees.cdc

  Line 119 in ed4310c

  .getCapability(/public/flowTokenBalance)

• flow-core-contracts/contracts/FlowServiceAccount.cdc

  Line 53 in ed4310c

  .getCapability(/public/flowTokenBalance)

Is not verified that it is in fact targeting the default FLOW vault.

Suggest A Solution

This can be verified, using the getLinkTarget method.

But you are currently not able to due paths not being comparable onflow/cadence#1815.
A workaround would be to compare the "path.toString()" values, but this seems dirty.