In many places in ScriptPubKeyMan managing code, we assume that the
ScriptPubKeyMan being retrieved actually exists and is not a nullptr.
Thus removing a ScriptPubKeyMan requires erasing the object from the
map rather than setting it to a nullptr.
Instead of having a large blob of cache merging code in TopUp, refactor
this into DescriptorCache so that it can merge and provide a diff
(another DescriptorCache containing just the items that were added).
Then TopUp can just write everything that was in the diff.
Adds an error output parameter to all GetReservedDestination functions
so that callers can get the actual reason that a change address could
not be fetched. This more closely matches GetNewDestination. This allows
for more granular error messages, such as one that indicates that
bech32m addresses cannot be generated yet.
We don't want the legacy wallet to ever have bech32m addresses so don't
allow importing them. This includes addmultisigaddress as that is a
legacy wallet only RPC
Additionally, bech32m multisigs are not available yet, so disallow them
in createmultisig.
If a transaction as a segwit output, use a bech32m change address if
they are available. If not, fallback to bech32. If bech32 change
addresses are unavailable, fallback to the default address type.
Bech32m addresses need their own OutputType
We are not ready to create DescriptorScriptPubKeyMans which produce
bech32m addresses. So don't allow generating them.
SelectCoinsMinConf is a bit of a misnomer now since it really just does
all of the coin selection given some parameters. So rename this to
something less annoying to say and makes a bit more sense.
-BEGIN VERIFY SCRIPT-
sed -i 's/SelectCoinsMinConf/AttemptSelection/g' $(git grep -l SelectCoinsMinConf ./src)
-END VERIFY SCRIPT-
It's unnecessary to fill in the vin with dummy inputs, calculate the
fee, then fill in the vin with the actual inputs. Just fill the vin with
the actual inputs the first time.
- txNew nLockTime setting to txNew init
- FeeCalc to the fee estimation fetching
- setCoins to prior to SelectCoins
- nBytes to CalculateMaximumSignedTxSize call
- tx_sizes to CalculateMaximumSignedTxSize call
- coin_selection_params.m_avoid_partial_spends to params init
Ensuring that the recipients vector is not empty and that the amounts
are non-negative can be done in CreateTransaction rather than
CreateTransactionInternal. Additionally, these checks should happen as
soon as possible, so they are done at the beginning of
CreateTransaction.
nValue is the sum of the intended recipient amounts, so name it that for
clarity.
nValueToSelect is the coin selection target value, so name it
selection_target for clarity.
Instead of hijacking the effective_feerate to use the correct value
during coin selection, have OutputGroup be aware of whether we are
subtracting the fee from the outputs and provide the correct value to
use for selection.
To do this, OutputGroup now takes CoinSelectionParams and has a new
function GetSelectionAmount().
This was originally modified to use SelectCoinsMinConf in order to test
both BnB and Knapsack at the same time. But since SelectCoins does both
now, this is no longer necessary and we can revert back to actually
testing SelectCoins.
Remove the CreateTransaction while loop. Removes variables that were
only needed because of that loop. Also renames a few variables and
moves their declarations to where they are used.
Some subtractFeeFromOutputs handling is moved to after coin selection
in order to reduce their amounts once the fee is known.
If subtracting the fee reduces the change to dust, we will also now
remove the change output
Although the CreateTransaction loop currently remains, it should be
largely unused. KnapsackSolver will now account for transaction fees
when doing its selection.
In the previous commit, SelectCoinsMinConf was refactored to have some
calculations become shared for KnapsackSolver and SelectCoinsBnB. In
this commit, KnapsackSolver will now use the not_input_fees and
effective_feerate so that it include the fee for non-input things
(excluding a change output) so that the algorithm will select enough to
cover those fees. This is necessary for selecting on effective values.
Additionally, the OutputGroups
created for KnapsackSolver will actually have their effective values
calculated and set, and KnapsackSolver will do its selection on those
effective values.
Lastly, SelectCoins is modified to use the same value for preselected
inputs for BnB and KnapsackSolver. While it will still use the real
value when subtracting the fee from outputs, this behavior will be
the same regardless of the algo used for selecting additional inputs.
The fees for transaction overhead and recipient outputs are now included
in nTargetValue instead of being a separate parameter. For the coin
selection algorithms, it doesn't matter that these are separate as in
either case, the algorithm needs to select enough to cover these fees.
Note that setting nValueToSelect is changed as it now includes
not_input_fees. Without the change to how nValueToSelect is increased
for KnapsackSolver, this would result in overpaying fees. The change to
increase by the difference between nFeeRet and not_input_fees allows
this to have the same behavior as previously.
Additionally, because we assume that KnapsackSolver will always find a
solution that requires change (we assume that BnB always finds a
non-change solution), we also include the fee for the change output in
KnapsackSolver's target. As part of this, we also use the changeless
nFeeRet when iterating for KnapsackSolver. This is because we include
the change fee when doing KnapsackSolver, so nFeeRet on further
iterations won't include the change fee.
Simplifies CreateTransactionInternal without changing behavior. Removes
the pick_new_inputs variable by moving the subtract fee from amount
implementation to later in the loop to where it is possible to calculate
the fee for the transaction. This allows the fee to be subtracted from
the outputs within a single iteration, instead of calculating the fee in
the first iteration, and subtracting the fee in the second.
This also removes another scenario where a second iteration of the loop
finds a smaller input set (and thus smaller fees than the first
iteration) with no change and so a third iteration of the loop is done in order to make
a change output that contains the excess fees.
To handle these cases, we always create a change output which contains
the difference between selected input values and the recipient amounts.
Once the transaction fee is calculated, the change output is reduced (in
the normal case) or the recipient amounts are reduced (in the subtract
fee from amount case). All of this is done in a single iteration of the
loop.
To prepare for KnapsackSolver to use effective values, these
calculations are moved out of the BnB if block to allow for them to be
shared with KnapsackSolver in the future.
Since we want tests to run quickly, and since tests do a lot more db
operations than expected we expect to see in actual usage, we disable
sqlite's syncing behavior to make db operations run much faster. This
syncing behavior is necessary for normal operation as it helps guarantee
that data won't become lost or corrupted, but in tests, we don't care
about that.
Instead of fetching the discard feerate for each SelectCoinsMinConf
iteration, fetch and cache it once during CreateTransaction so that it
is shared for each SelectCoinsMinConf through
coin_selection_params.m_discard_feerate.
Does not change behavior.
Instead of setting the long term feerate for each SelectCoinsMinConf
iteration, set it once during CreateTransaction and let it be shared
with each SelectCoinsMinConf through
coin_selection_params.m_long_term_feerate.
Does not change behavior.
Make sure that all fee calculations use the same feerate.
coin_selection_params.effective_fee is the variable we use for all fee
calculations, so get rid of remaining nFeeRateNeeded usages and just
directly set coin_selection_params.effective_fee.
Does not change behavior.
During each loop of CreateTransaction, instead of constantly getting a
new feerate, use the feerate that we have already fetched for all
fee calculations. Thix fixes a race condition where the feerate required
changes during each iteration of the loop.
This commit changes behavior as the "Fee estimation failed" error will
now take priority over "Signing transaction failed".
The qt tests don't need to bind to the regtest port. By not binding, it
will no longer conflict with existing regtest instances and the tests
will run as normal.
Introduces a DeferringSignatureChecker which simply takes a
BaseSignatureChecker and passes through everything.
SignatureExtractorChecker now subclasses DeferringSignatureChecker. This
allows for all BaseSignatureChecker functions to be implemented for
SignatureExtractorChecker, while allowing for future signature checkers
which opreate similarly to SignatureExtractorChecker.
Determines whether descriptors should be used based on whether the
--descriptor or --legacy-wallet option is set,
and the compiled support. If no option is set and both BDB and SQLite
are available, it defaults to legacy.
This is used to switch descriptor agnostic tests between descriptors and
legacy wallet.
Rewrite OutputGroups so that the logic is easier to follow and
understand.
There is a slight behavior change as OutputGroups will be grouped by
scriptPubKey rather than CTxDestination as before. This should have no
effect on users as all addresses are a CTxDestination. However by using
scriptPubKeys, we can correctly group outputs which fall into the
NoDestination case. But we also shouldn't have any NoDestination
outputs.
Tests that a fully signed transaction given to
signrawtransactionwithwallet is both unchanged and marked as complete.
This tests for a regression in 0.20 where the transaction would not be
marked as complete.
Our max weight check in CreateTransaction only worked if the transaction
was fully signed. However if we are funding a transaction, it is
possible that the tx weight will be too large for a standard tx. In that
case, we should also fail. So we use the tx weight returned by
CalculateMaximumSignedTxSize and check against the limit for those
transactions.
Aplies a patch to Qt that fixes the non-determinism by modifying Qt. The
source of the non-determinism is how LLVM 8 optimizes qt_intersect_spans
when compiling. The particular optimization that seems to be causing the
problems is that a temp variable is being added for spans->y. For some
reason, when it does this, it chooses different instructions to use when
making that variable. We bypass this problem by patching
qt_intersect_spans to always make and use this local variable.
It is unnecessary to upgrade to FEATURE_HD_SPLIT if this feature is
already supported by the wallet. Because upgrading to FEATURE_HD_SPLIT
actually requires upgrading to FEATURE_PRE_SPLIT_KEYPOOL, users would
accidentally be upgraded to FEATURE_PRE_SPLIT_KEYPOOL instead of nothing
being done.
Fixes the issue described at
https://github.com/bitcoin/bitcoin/pull/20403#discussion_r526063920
Removes the leading 0 from the version number. The minor version, which
we had been using as the major version, is now the major version. The
revision, which we had been using as the minor version, is now the minor
version. The revision number is dropped. The build number is promoted to
being part of the version number. This also avoids issues where it was
accidentally not included in the version number.
The CLIENT_VERSION remains the same format as previous as previously,
the Major version was 0 so that was never a factor in CLIENT_VERSION.
Move the hashers that we use for hash tables to a common place.
Moved hashers:
- SaltedTxidHasher
- SaltedOutpointHasher
- FilterHeaderHasher
- SignatureCacheHasher
- BlockHasher
For upgrade tests and possibly other tests, it is useful to inspect the
bdb file for the wallet (i.e. the wallet.dat file).
test_framework/bdb.py is an implementation of bdb file deserialization
specific for Bitcoin Core's usage.
nWalletMaxVersion was used to allow an upgrade to a version only
when the new feature was used. This makes sense for the old
-upgradewallet startup option. But because upgradewallet is now a RPC,
putting off the version bump like this does not make sense. Instead,
immediately upgrading to the given version number makes sense.
Instead of using CanSupportFeature and relying on nWalletMaxVersion,
take the new version we are upgrading to and use IsSupportedFeature
with that and the previous wallet version.
Andrew Chow