ReserveDestination::SetBlindingPubKey was removed since it was only used
in one place (in Wallet::GetNewChangeDestination), and after this change
it was silently breaking blinded change addresses by somehow replacing
the destination with CNoDestination...
Right now a wallet descriptor is converted to it's string representation
(via `Descriptor::ToString`) repeatedly at different instances:
- on finding a `DescriptorScriptPubKeyMan` for a given descriptor
(`CWallet::GetDescriptorScriptPubKeyMan`, e.g. used by the
`importdescriptors` RPC); the string representation is created once
for each spkm in the wallet and at each iteration again for
the searched descriptor (`DescriptorScriptPubKeyMan::HasWalletDescriptor`)
- whenever `DescriptorScriptPubKeyMan::GetID()` is called, e.g. in
`TopUp` or any instances where a descriptor is written to the DB
to determine the database key etc.
As there is no good reason to calculate a fixed descriptor's string/ID
more than once, add the ID as a field to `WalletDescriptor` and
calculate it immediately at initialization (or deserialization).
`HasWalletDescriptor` is changed to compare the spkm's and searched
descriptor's ID instead of the string to take use of that.
This speeds up the functional test `wallet_miniscript.py` by a factor of
5-6x on my machine (3m30.95s on master vs. 0m38.02s on PR). The recently
introduced "max-size TapMiniscript" test-case introduced a descriptor
that takes 2-3 seconds to create a string representation, so the
repeated calls to that were significantly hurting the performance.
8e7e3e6149 test: wallet, verify migration doesn't crash for an invalid script (furszy)
1de8a2372a wallet: disallow migration of invalid or not-watched scripts (furszy)
Pull request description:
Fixing #28057.
The legacy wallet allows to import any raw script (#28126), without
checking if it was valid or not. Appending it to the watch-only set.
This causes a crash in the migration process because we are only
expecting to find valid scripts inside the legacy spkm.
These stored scripts internally map to `ISMINE_NO` (same as if they
weren't stored at all..).
So we need to check for these special case, and take into account that
the legacy spkm could be storing invalid not watched scripts.
Which, in code words, means `IsMineInner()` returning
`IsMineResult::INVALID` for them.
Note:
To verify this, can run the test commit on top of master.
`wallet_migration.py` will crash without the bugfix commit.
ACKs for top commit:
achow101:
ACK 8e7e3e6149
Tree-SHA512: c2070e8ba78037a8f573b05bf6caa672803188f05429adf5b93f9fc1493faedadecdf018dee9ead27c656710558c849c5da8ca5f6f3bc9c23b3c4275d2fb50c7
The legacy wallet allowed to import any raw script, without checking if
it was valid or not. Appending it to the watch-only set.
This causes a crash in the migration process because we are only
expecting to find valid scripts inside the legacy spkm.
These stored scripts internally map to `ISMINE_NO` (same as if they
weren't stored at all..).
So we need to check for these special case, and take into account that
the legacy spkm could be storing invalid not watched scripts.
Which, in code words, means IsMineInner() returning IsMineResult::INVALID
for them.
This allows us to verify the descriptor ID on the descriptors
unit tests in different software versions without requiring to
use the entire DescriptorScriptPubKeyMan machinery.
Note:
The unit test changes are introduced after the bugfix commit
but this commit + the unit test commit can be cherry-picked
on top of the v25 branch to verify IDs correctness. IDs must
be the same for v25 and after the bugfix commit.
cdba23db35 wallet: Document blank flag use in descriptor wallets (Ryan Ofsky)
43310200dc wallet: Ensure that the blank wallet flag is unset after imports (Andrew Chow)
e9379f1ffa rpc, wallet: Include information about blank flag (Andrew Chow)
Pull request description:
The `blank` wallet flag is used to indicate that the wallet intentionally does not have any keys, scripts, or descriptors, and it prevents the automatic generation of those things for such a wallet. Once the wallet contains any of those data, it is unnecessary, and possibly incorrect, to have `blank` set. This PR fixes a few places where this was not properly happening. It also adds a test for this unset behavior.
ACKs for top commit:
S3RK:
reACK cdba23db35
ryanofsky:
Code review ACK cdba23db35. Only change since last review is dropping the commit which makes createwallet RPC set BLANK flag automatically when DISABLE_PRIVATE_KEYS flag is set
Tree-SHA512: 85bc2a9754df0531575d5c8f4ad7e8f38dcd50083dc29b3283dacf56feae842e81f34654c5e1781f2dadb0560ff80e454bbc8ca3b2d1fab1b236499ae9abd7da
To avoid wasting processing power, we can skip blocks that occurred
before the wallet's creation time, since these blocks are guaranteed
not to contain any relevant wallet data.
This has direct implications (an speed improvement) on the underlying
blockchain synchronization process as well.
The reason is that the validation interface queue is limited to
10 tasks per time. This means that no more than 10 blocks can be
waiting for the wallet(s) to be processed while we are synchronizing
the chain (activating the best chain to be more precise).
Which can be a bottleneck if blocks arrive and are processed faster
from the network than what they are processed by the wallet(s).
