Now the recovery, which runs at startup, only scans for known
addresses that were generated and recorded by this wallet.
The coming rescanblockchain RPC implementation, which requires the
wallet to be unlocked, does account discovery.
1. Remove passphrase support for public keys.
2. Rename privPassphrase to passphrase to avoid confusion.
Note:
There has been a bug in the prompt, which prevents users from
specifying a custom public passphrase. So, most wallet databases
have been using the default password for the public keys, anyway.
If SendOutputs is called on a watch-only wallet then a transaction is
created but without any signatures. Publishing that transaction will
always fail. But the attempt to publish will already update the internal
state of the wallet so we shouldn't try to publish this unsigned TX.
Instead we return a new error along with the unsigned transaction to
give the caller the chance to sign and publish it through other means.
If we're running in watch-only mode, there is no unlock possible.
Therefore, we also don't need to prevent any unlocks from happening when
doing coin selection in that mode.
To allow a wallet to be created directly from an extended master root
key (xprv), we move the derivation from seed to extended key to the
loader instead of the address manager itself.
We can now get rid of our incorrect dust calculation which did not
give exact values for segwit outputs as it was based on spending a
P2PKH output instead.
To make sure we don't create any manual DB transactions, we refactor the
txToOutputs method to use walletdb.Update and the new
walletdb.ErrDryRunRollBack error for making sure a rollback is issued.
To make sure we don't create any manual DB transactions, we refactor the
ImportAccountDryRun method to use walletdb.Update and the new
walletdb.ErrDryRunRollBack error for making sure a rollback is issued.
Let the method `addRelevantTx` use `InsertTxCheckIfExists` to insert a relevant
transaction. If the transaction has already been recorded, the method call
`addRelevantTx` will return early and not proceed with duplicating work of
checking every output and duplicating the tx notification to the notification
server.
This method returns the first N external and internal addresses, which
can be presented to users to confirm whether the account has been
imported correctly.
