Previous versions assumed absence of an entry in mapAddressBook indicated change.
This no longer holds true (due to bugs) and will shortly be made intentional.
Renaming the field helps ensure that old code using mapAddressBook directly gets checked for necessary rebasing.
-BEGIN VERIFY SCRIPT-
sed -i -e 's/mapAddressBook/m_address_book/g' $(git grep -l 'mapAddressBook' ./src)
-END VERIFY SCRIPT-
This is a step toward removing the Chain::Lock class and reducing cs_main
locking.
This change only affects behavior in the case where wallet last block processed
falls behind the chain tip, where it will treat the last block processed as the
current tip.
This is a step toward removing the Chain::Lock class and reducing cs_main
locking.
This change only affects behavior in the case where wallet last block processed
falls behind the chain tip, where it may set a different lock time.
This is a step toward removing the Chain::Lock class and reducing cs_main
locking.
This change affects behavior in a few small ways.
- If there's no max_height specified, percentage progress is measured ending at
wallet last processed block instead of node tip
- More consistent error reporting: Early check to see if start_block is on the
active chain is removed, so start_block is always read and the triggers an
error if it's unavailable
This is a step toward removing the Chain::Lock class and reducing cs_main
locking.
This change only affects behavior in the case where wallet last block processed
falls behind the chain tip. The rescanblockchain error height error checking
will just be stricter in this case and only accept values up to the last
processed height
FoundBlock class allows interfaces::Chain::findBlock to return more block
information without having lots of optional output parameters. FoundBlock class
is also used by other chain methods in upcoming commits.
There is mostly no change in behavior. Only exception is
CWallet::RescanFromTime now throwing NonFatalCheckError instead of
std::logic_error.
Currently it's possible for ReleaseWallet to delete the CWallet pointer while
it is processing BlockConnected, etc chain notifications.
To fix this, unregister from notifications earlier in UnloadWallet instead of
ReleaseWallet, and use a new RegisterSharedValidationInterface function to
prevent the CValidationInterface shared_ptr from being deleted until the last
notification is actually finished.
e57980b473 [mempool] Remove NotifyEntryAdded and NotifyEntryRemoved callbacks (John Newbery)
2dd561f361 [validation] Remove pool member from ConnectTrace (John Newbery)
969b65f3f5 [validation] Remove NotifyEntryRemoved callback from ConnectTrace (John Newbery)
5613f9842b [validation] Remove conflictedTxs from PerBlockConnectTrace (John Newbery)
cdb893443c [validation interface] Remove vtxConflicted from BlockConnected (John Newbery)
1168394d75 [wallet] Notify conflicted transactions in TransactionRemovedFromMempool (John Newbery)
Pull request description:
These boost signals were added in #9371, before we had a `TransactionRemovedFromMempool` method in the validation interface. The `NotifyEntryAdded` callback was used by validation to build a vector of conflicted transactions when connecting a block, which the wallet was notified of in the `BlockConnected` CValidationInterface callback.
Now that we have a `TransactionRemovedFromMempool` callback, we can fire that signal directly from the mempool for conflicted transactions.
Note that #9371 was implemented to ensure `-walletnotify` events were fired for these conflicted transaction. We inadvertently stopped sending these notifications in #16624 (Sep 2019 commit 7e89994). We should probably fix that, but in a different PR.
ACKs for top commit:
jonatack:
Re-ACK e57980b
ryanofsky:
Code review ACK e57980b473, no code changes since previous review, but helpful new code comments have been added and the PR description is now more clear about where the old code came from
Tree-SHA512: 3bdbaf1ef2731e788462d4756e69c42a1efdcf168691ce1bbfdaa4b7b55ac3c5b1fd4ab7b90bcdec653703600501b4224d252cfc086aef28f9ce0da3b0563a69
The only CValidationInterface client that cares about transactions that
are removed from the mempool because of CONFLICT is the wallet.
Start using the TransactionRemovedFromMempool method to notify about
conflicted transactions instead of using the vtxConflicted vector in
BlockConnected.
Not all ScriptPubKeyMans will be able to provide private keys,
but pubkeys and scripts should be. So only provide public-only
SigningProviders, i.e. ones that can help with Solving.
Instead of fetching a SigningProvider from ScriptPubKeyMan in order
to fill and sign the keys and scripts for a PSBT, just pass that
PSBT to a new FillPSBT function that does all that for us.
CWallet::CanGetAddresses() is used to check whether the wallet has available or is able to produce keys for addresses. It uses the ScriptPubKeyMan::CanGetAddresses(), which in turn uses the const KeypoolCountExternalKeys() method, all which do counting and no modifications.
These functions are used to mark/check if a key of our own has been used to spend (and only for avoid-reuse wallets), which has nothing to do with the destination/address itself.
Give them more accurate names to avoid confusion.
-BEGIN VERIFY SCRIPT-
sed -i -e 's/UsedDestination/SpentKey/g' $(git grep -l 'UsedDestination' ./src)
-END VERIFY SCRIPT-
4e9efac678 test: Check wallet name in -walletnotify script (João Barbosa)
9a5b5ee81f wallet: Replace %w by wallet name in -walletnotify script (João Barbosa)
Pull request description:
Fixes#13237.
ACKs for top commit:
laanwj:
ACK 4e9efac678
Tree-SHA512: 189dd1c785485f2e974d7c12531851b2a977778b3b954aa95efd527322ba3345924cfd587fb9c90b0fa979202af0ab2d90e53d125fe266a36c94f757e4176203
Needed for future ScriptPubKeyMans which may need to create
SigningProviders dynamically and thus a normal pointer is not enough
This commit does not change behavior.
Add wallet logic for dealing with multiple ScriptPubKeyMan instances. This
doesn't change current behavior because there is still only a single
LegacyScriptPubKeyMan. But in the future the new logic will be used to support
descriptor wallets.
6dd59d2e49 Don't allow implementers to think ScriptHash(Witness*()) results in nesting computation (Gregory Sanders)
4b8f1e989f IsUsedDestination shouldn't use key id as script id for ScriptHash (Gregory Sanders)
Pull request description:
Regression introduced in https://github.com/bitcoin/bitcoin/pull/17621 which causes p2sh-segwit addresses to be erroneously missed.
Tests are only failing in 0.19 branch, likely because that release still uses p2sh-segwit addresses rather than bech32 by default.
I'll devise a test case to catch this going forward.
ACKs for top commit:
achow101:
ACK 6dd59d2e49
MarcoFalke:
ACK 6dd59d2
meshcollider:
Code review ACK 6dd59d2e49
Tree-SHA512: b3e0f320c97b8c1f814cc386840240cbde2761fee9711617b713d3f75a4a5dce2dff2df573d80873df42a1f4b74e816ab8552a573fa1d62c344997fbb6af9950
6fc554f591 wallet: Reset reused transactions cache (Fabian Jahr)
Pull request description:
Fixes#17603 (together with #17824)
`getbalances` is using the cache within `GetAvailableCredit` under certain conditions [here](35fff5be60/src/wallet/wallet.cpp (L1826)). For a wallet with `avoid_reuse` activated this can lead to inconsistent reporting of `used` transactions/balances between `getbalances` and `listunspent` as pointed out in #17603. When an address is reused before the first transaction is spending from this address, the cache is not updated even after the transaction is sent. This means the remaining outputs at the reused address are not showing up as `used` in `getbalances`.
With this change, any newly incoming transaction belonging to the wallet marks all the other outputs at the same address as dirty.
ACKs for top commit:
kallewoof:
Code review re-ACK 6fc554f591
promag:
ACK 6fc554f591.
achow101:
Re-ACK 6fc554f591
meshcollider:
Code review ACK 6fc554f591
Tree-SHA512: c4cad2c752176d16d77b4a4202291d20baddf9f27250896a40274d74a6945e0f6b34be04c2f9b1b2e756d3ac669b794969df8f82a98e0b16f10e92f276649ea2
-BEGIN VERIFY SCRIPT-
# Delete outdated alias for RecursiveMutex
sed -i -e '/CCriticalSection/d' ./src/sync.h
# Replace use of outdated alias with RecursiveMutex
sed -i -e 's/CCriticalSection/RecursiveMutex/g' $(git grep -l CCriticalSection)
-END VERIFY SCRIPT-
If a destination is reused we mark the cache of the other transactions going to that destination dirty so they are not accidentally reported as trusted when the cache is hit.
6d6a7a8403 gui: Fix duplicate wallet showing up (João Barbosa)
81ea66c30e Drop signal CClientUIInterface::LoadWallet (Russell Yanofsky)
Pull request description:
This PR includes 2 fixes:
- prevent GUI LoadWallet handlers from crashing on startup when multiple handlers are attached, because the first handler takes ownership of the wallet unique pointer. Now every handler will receive its own unique pointer;
- prevent showing a wallet twice in the GUI on startup due to a race with `loadwallet`.
Fixes#16937
ACKs for top commit:
fjahr:
code review ACK 6d6a7a8403
ryanofsky:
Code review ACK 6d6a7a8403. No changes since last ACK other than rebase due to #17070
kallewoof:
Code review ACK 6d6a7a8403
Tree-SHA512: 7f0658c9011f81dfa176a094c2263448ee1d14fda7dc94e8b55ee9c8b81538bd2d1e4bf8a8dbfcd029ebfc9feb6d3cda9dee3f911122df0a4b1e0ca75f653ba4
e1e1442f3e Activate no-privkey -> ISMINE_WATCH_ONLY behavior for LegacySPKM only (Gregory Sanders)
Pull request description:
Slight cleanup following https://github.com/bitcoin/bitcoin/pull/16944
This should allow future scriptpubkeymans to transparently work, since the current plan is to have ismine always be spendable.
ACKs for top commit:
achow101:
ACK e1e1442f3e
Sjors:
Code review ACK e1e1442f3e
meshcollider:
Code review ACK e1e1442f3e
Tree-SHA512: c0a86587d33b8b1646494a5cb0bf8681ee4a88e6913918157746943a0996b501903e0e6ee954cf04154c1e0faee0cbb375c74ca789f46ba9244eb5296632b042
09502452bb IsUsedDestination should count any known single-key address (Gregory Sanders)
Pull request description:
This plugs the privacy leak detailed at https://github.com/bitcoin/bitcoin/issues/17605, at least for the single-key case.
ACKs for top commit:
meshcollider:
Code Review ACK 09502452bb
Tree-SHA512: e1d68281675f05072b3087171cba1df9416a69c9ccf70c72e8555e55eadda2d0fd339e5a894e3a3438ff94b9e3827fb19b8b701faade70c08756b19ff157ee0c
6e77a7b65c keypool: Add comment about TopUp and when to use it (Andrew Chow)
ea50e34b28 keypool: Move opportunistic TopUps from LegacyScriptPubKeyMan to CWallet and ReserveDestination (Andrew Chow)
bb2c8ce23c keypool: Remove superfluous topup from CWallet::GetNewChangeDestination (Andrew Chow)
Pull request description:
* The `TopUp()` in `CWallet::GetNewChangeDestination` is unnecessary as currently m_spk_man calls TopUp further down the call stack inside LegacyScriptPubKeyMan::ReserveKeyFromKeyPool (called by LegacyScriptPubKeyMan::GetReservedDestination). This also lets us prepare for future changes with multiple ScriptPubKeyMans in the wallet.
* An opportunistic `TopUp()` is moved from `LegacyScriptPubKeyMan::GetNewDestination` to `CWallet::GetNewDestination`.
* Another opportunistic `TopUp()` is moved from `LegacyScriptPubKeyMan::ReserveKeyFromKeyPool`
Moving opportunistic TopUps ensures that ScriptPubKeyMans will always be topped up before requesting Destinations from them as we cannot always rely on future ScriptPubKeyMan implementaions topping up internally.
See also: https://github.com/bitcoin/bitcoin/pull/17373#discussion_r348598174
ACKs for top commit:
instagibbs:
utACK 6e77a7b65c only change is slight elaboration on comment
ryanofsky:
Code review ACK 6e77a7b65c. Only the comment changed since my previous review.
Tree-SHA512: bdfc8d303842c3fb7c3d40af7abfa6d9dac4ef71a24922bb92229674ee89bfe3113ebb46d3903ac48ef99f0a7d6eaac33282495844f2b31f91b8df55084c421f
Removes SetCrypted() and fUseCrypto as we don't need them anymore.
SetCrypted calls in LegacyScriptPubKeyMan are replaced with mapKeys.empty()
IsCrypted() is changed to just call HasEncryptionKeys()
886f1731be Key pool: Fix omitted pre-split count in GetKeyPoolSize (Andrew Chow)
386a994b85 Key pool: Change ReturnDestination interface to take address instead of key (Andrew Chow)
ba41aa4969 Key pool: Move LearnRelated and GetDestination calls (Andrew Chow)
65833a7407 Add OutputType and CPubKey parameters to KeepDestination (Andrew Chow)
9fcf8ce7ae Rename Keep/ReturnKey to Keep/ReturnDestination and remove the wrapper (Andrew Chow)
596f6460f9 Key pool: Move CanGetAddresses call (Andrew Chow)
Pull request description:
* The `pwallet->CanGetAddresses()` call in `ReserveDestination::GetReservedDestination` to `LegacyScriptPubKeyMan::GetReservedDestination` so that the sanity check results in a failure when a `ScriptPubKeyMan` individually cannot get a destination, not when any of the `ScriptPubKeyMan`s can't.
* `ScriptPubKeyMan::GetReservedDestination` is changed to return the destination so that future `ScriptPubKeyMan`s can return destinations constructed in other ways. This is implemented for `LegacyScriptPubKeyMan` by moving key-to-destination code from `CWallet` to `LegacyScriptPubKeyMan`
* In order for `ScriptPubKeyMan` to be generic and work with future `ScriptPubKeyMan`s, `ScriptPubKeyMan::ReturnDestination` is changed to take a `CTxDestination` instead of a `CPubKey`. Since `LegacyScriptPubKeyMan` still deals with keys internally, a new map `m_reserved_key_to_index` is added in order to track the keypool indexes that have been reserved.
* A bug is fixed in how the total keypool size is calculated as it was omitting `set_pre_split_keypool` which is a bug.
Split from #17261
ACKs for top commit:
ryanofsky:
Code review ACK 886f1731be. Only change is moving earlier fix to a better commit (same end result).
promag:
Code review ACK 886f1731be.
instagibbs:
code review re-ACK 886f1731be
Sjors:
Code review re-ACK 886f1731be
Tree-SHA512: f4be290759f63fdc920d5c02bd0d09acc4b06a5f053787d4afcd3c921b2e35d2bd97617fadae015da853dc189f559fb8d2c6e58d53e4cabfac9af151cd97ad19
In order for ScriptPubKeyMan to be generic and work with future
ScriptPubKeyMans, ScriptPubKeyMan::ReturnDestination is changed to
take a CTxDestination instead of a CPubKey. Since LegacyScriptPubKeyMan
still deals with keys internally, a new map m_reserved_key_to_index is
added in order to track the keypool indexes that have been reserved.
The CPubKey argument of KeepDestination is also removed so that it is
more generic. Instead of taking a CPubKey or a CTxDestination, we just use
the nIndex given to find the pubkey.
Addresses are determined by LegacyScriptPubKeyMan::GetReservedDestination
instead of ReserveDestination::GetReservedDestination as other ScriptPubKeyMan
implementations may construct addresses differently
This does not change behavior.
An opportunistic TopUp is moved from LegacyScriptPubKeyMan::GetNewDestination
to CWallet::GetNewDestination. Another opportunistic TopUp is moved from
LegacyScriptPubKeyMan::ReserveKeyFromKeyPool (called by LegacyScriptPubKeyMan::GetReservedDestination)
to ReserveDestination::GetReservedDestination.
Moving opportunistic TopUps ensures that ScriptPubKeyMans will always
be topped up before requesting Destinations from them as we cannot
always rely on future ScriptPubKeyMan implementaions topping up internally.
As such, it is also unnecessary to keep the TopUp calls in the
LegacyScriptPubKeyMan functions so they are moved.
This does not change behavior as TopUp calls are moved up the call stack.
This does not change behavior. This TopUp() is unnecessary as currently
m_spk_man calls TopUp further down the call stack inside
LegacyScriptPubKeyMan::ReserveKeyFromKeyPool (called by LegacyScriptPubKeyMan::GetReservedDestination)
By removing this here, we also prepare for future changes where CWallet
has multiple ScriptPubKeyMans instead of m_spk_man.
Call LegacyScriptPubKeyMan::CanGetAddresses directly instead of calling
CWallet::CanGetAddresses to only query the relevant key manager
This is a minor change in behavior: call now only happens if a new key needs to
be reserved, since if a key is already reserved it might fail unnecessarily.
This change also serves as a sanity check
https://github.com/bitcoin/bitcoin/pull/16341#discussion_r331238394
6a2e6b0600 Remove out of date comments for CalculateMaximumSignedTxSize (Gregory Sanders)
Pull request description:
These paths can be hit for probably a number of reasons, and ISMINE spendability is not a requirement to call it.
For example: During watch-only transaction creation, previous transaction in wallet, pubkey imported, but not the witnessscript associated with the prevout.
In this case I think no/minimal comment is better than specific and soon to be out of date.
ACKs for top commit:
achow101:
ACK 6a2e6b0600
darosior:
ACK 6a2e6b0600
Tree-SHA512: ad4c26fd2409eb5aed19d67c19cb5479d226bd11e9298630309c4344f6562ace2e10c2850ebe22770331d71e91320a606e79619b9fe52dd478ce1f589a740122
3958295bc8 wallet: LearnRelatedScripts only if KeepDestination (João Barbosa)
55295fba4c wallet: Lock address type in ReserveDestination (João Barbosa)
Pull request description:
Only mutates the wallet if the reserved key is kept.
First commit is a refactor that makes the address type a class member.
The second commit moves `LearnRelatedScripts` from `GetReservedDestination` to `KeepDestination` to avoid an unnecessary call to `AddCScript` - which in turn prevents multiple entries of the same script in the wallet DB.
ACKs for top commit:
achow101:
Re-ACK 3958295bc8
Sjors:
ACK 3958295bc8
ryanofsky:
Code review ACK 3958295bc8. I like this change. The new behavior makes more sense, and the change makes the code clearer, since the current LearnRelatedScripts call is hard to understand and explain. (Personally, I'd like it if this PR were merged before #17373 or that PR was rebased on top of this one so it would be less confusing.)
meshcollider:
utACK 3958295bc8
Tree-SHA512: 49a5f4b022b28042ad37ea309b28378a3983cb904e234a25795b5a360356652e0f8e60f15e3e64d85094ea63af9be01812d90ccfc08ca4f1dd927fdd8566e33f
c6dd565c88 [gui] watch-only wallet: copy PSBT to clipboard (Sjors Provoost)
39465d545d [wallet] add fillPSBT to interface (Sjors Provoost)
848f889208 [gui] send: include watch-only (Sjors Provoost)
40537f0909 [wallet] ListCoins: include watch-only for wallets without private keys (Sjors Provoost)
Pull request description:
For wallets with `WALLET_FLAG_DISABLE_PRIVATE_KEYS` this makes the watch-only balance available on the send screen (including coin selection). Instead of sending a transaction it generates a PSBT.
The user can take this PSBT and process it with [HWI](https://github.com/bitcoin-core/HWI) or put it an SD card for hardware wallets that support that.
The PSBT is copied to the clipboard. This was the easiest approach; we can add a dialog later to display it, as well as an option to save to disk.
ACKs for top commit:
instagibbs:
test and code review ACK c6dd565c88
meshcollider:
re-ACK c6dd565c88
Tree-SHA512: ebc3da0737e33b255ed926191b84569aedb6097d14868662bd5dce726ce3048e86e9a31eba987b10dffe1482b35c21ae1cd595c2caa4634bc4cf78a826a83852
d0dab897af Refactor: Require scriptPubKey to get wallet SigningProvider (Andrew Chow)
4b0c718f8f Accumulate result UniValue in SignTransaction (Andrew Chow)
Pull request description:
Easier to review ignoring whitespace:
git log -p -n1 -w
This commit does not change behavior. It passes new CScript arguments to
signing functions, but the arguments aren't currently used.
Split from #17261
ACKs for top commit:
instagibbs:
utACK d0dab897af
ryanofsky:
Code review ACK d0dab897af. Thanks for the SignTransaction update. No other changes since last review
Sjors:
Code review ACK d0dab897af
promag:
Code review ACK d0dab897af.
meshcollider:
Code review ACK d0dab897af
Tree-SHA512: c3f52df20fd9d6b3b5aa65562cf5f7dce7b7f44c148b0f988f8b578fce2a28e9b7bf010f5f04bb5bf60f5272b2899f1dbbfb8aee81579c21c9cba559d1d2bb70
b007efdf19 Allow BnB when subtract fee from outputs (Andrew Chow)
db15e71e79 Use BnB when preset inputs are selected (Andrew Chow)
Pull request description:
Currently we explicitly disable BnB when there are preset inputs selected or when the subtract fee from outputs option is enabled. This PR enables BnB for both cases.
Kind of an alternative to #17246 (implements the subtract fee from outputs part of it) and borrows a test from there too.
ACKs for top commit:
instagibbs:
reACK b007efdf19
Sjors:
re-ACK b007efdf19
Tree-SHA512: 933276b09b2fa2ab43db7f0b98762f06f6f5fa8606195f96aca9fa1cb71ae4ee7156028dd482b1cada82ddd0996a9daf12ea5c152589fdf192cd96cbc51e99df
Easier to review ignoring whitespace:
git log -p -n1 -w
This commit does not change behavior. It passes new CScript arguments to
signing functions, but the arguments aren't currently used.
0b75a7f068 wallet: Reuse existing batch in CWallet::SetUsedDestinationState (João Barbosa)
01f45dd00e wallet: Avoid recursive lock in CWallet::SetUsedDestinationState (João Barbosa)
Pull request description:
This PR makes 2 distinct changes around `CWallet::SetUsedDestinationState`:
- 1st the recursive lock is removed and now it requires the lock to be held;
- 2nd change is to support, in the best case, just a wallet database flush when transaction is added to the wallet.
ACKs for top commit:
achow101:
ACK 0b75a7f068
MarcoFalke:
ACK 0b75a7f068
ryanofsky:
Code review ACK 0b75a7f068. Code changes looks fine but PR description should be updated to say what benefits of the change are. I might have missed something, but I didn't see a place where multiple batches were used previously and a single batch was used now. So the main benefit of this change appears to be removing a recursive lock? And maybe moving toward a consistent convention for passing batch instances?
Tree-SHA512: abcf23a5850d29990668db20d6f624cca3e89629cc9ed003e0d05cde1b58ab2ff365034f156684ad13e55764b54c6c0c2bc7d5f96b8af7dc5e45a3be955d6b15
36b68de5b2 Remove getBlockDepth method from Chain::interface (Antoine Riard)
b66c429c56 Remove locked_chain from GetDepthInMainChain and its callers (Antoine Riard)
0ff03871ad Use CWallet::m_last_block_processed_height in GetDepthInMainChain (Antoine Riard)
f77b1de16f Only return early from BlockUntilSyncedToCurrentChain if current tip is exact match (Antoine Riard)
769ff05e48 Refactor some importprunedfunds checks with guard clause (Antoine Riard)
5971d3848e Add block_height field in struct Confirmation (Antoine Riard)
9700fcb47f Replace CWalletTx::SetConf by Confirmation initialization list (Antoine Riard)
5aacc3eff1 Add m_last_block_processed_height field in CWallet (Antoine Riard)
10b4729e33 Pass block height in Chain::BlockConnected/Chain::BlockDisconnected (Antoine Riard)
Pull request description:
Work starter to remove Chain::Lock interface by adding m_last_block_processed_height in CWallet and m_block_height in CMerkleTx to avoid GetDepthInMainChain having to keep a lock . Once this one done, it should ease work to wipe out more cs_main locks from wallet code.
I think it's ready for a first round of review before to get further.
- `BlockUntilSyncedToCurrent` : restrain isPotentialTip to isTip because we want to be sure that wallet see BlockDisconnected callbacks if its height differs from the Chain one. It means during a reorg, an RPC could return before the BlockDisconnected callback had been triggered. This could cause a tx that had been included in the disconnected block to be displayed as confirmed, for example.
~~- `AbandonTransaction` : in case of conflicted tx (nIndex = -1), we set its m_block_height to the one of conflicting blocks, but if this height is superior to CWallet::m_last_block_processed_height, that means tx isn't conflicted anymore so we return 0 as tx is again unconfirmed~~ After #16624, we instead rely on Confirmation.
~~- `AddToWalletIfInvolvingMe`: in case of block disconnected, transactions are added to mempool again, so we need to replace old txn in `mapWallet` with a height set to zero so we remove check on block_hash.IsNull~~ Already done in #16624
ACKs for top commit:
jnewbery:
@jkczyz you've ACKed an intermediate commit (github annoyingly orders commits in date order, not commit order). Did you mean to ACK the final commit in this branch (36b68de5b2).
jkczyz:
> @jkczyz you've ACKed an intermediate commit (github annoyingly orders commits in date order, not commit order). Did you mean to ACK the final commit in this branch ([36b68de](36b68de5b2)).
meshcollider:
utACK 36b68de5b2
ryanofsky:
Code review ACK 36b68de5b2. Changes since last review: new jkczyz refactor importprunedfunds commit, changed BlockUntilSyncedToCurrentChainChanges commit title and description, changed Confirmation struct field order and line-wrapped comment
jnewbery:
utACK 36b68de5b2
promag:
Code review ACK 36b68de5b2.
Tree-SHA512: 08b89a0bcc39f67c82a6cb6aee195e6a11697770c788ba737b90986b4893f44e90d1ab9ef87239ea3766508b7e24ea882b7199df41173ab27a3d000328c14644
We don't remove yet Chain locks as we need to preserve lock
order with CWallet one until swapping at once to avoid
deadlock failures (spotted by --enable-debug)
is exact match
In the next commit, we start using BlockConnected/BlockDisconnected
callbacks to establish tx depth, rather than querying the chain
directly.
Currently, BlockUntilSyncedToCurrentChain will return early if
the best block processed by the wallet is a descendant of the node'tip.
That means that in the case of a re-org, it won't wait for the
BlockDisconnected callbacks that have been enqueued during the re-org
but have not yet been triggered in the wallet.
Change BlockUntilSyncedToCurrentChain to only return early if the
wallet's m_last_block_processed matches the tip exactly. This ensures
that there are no BlockDisconnected or BlockConnected callbacks
in-flight.
At wallet loading, we rely on chain state querying to retrieve
height of txn, to do so we ensure that lock order is respected
between cs_main and cs_wallet.
If wallet loaded is the wallet-tool one, all wallet txn will
show up with a height of zero. It doesn't matter as confirmation
height is not used by wallet-tool.
Reorder arguments and document Confirmation calls to avoid
ambiguity.
Fixes nits left from #16624
To do so we update CValidationInterface::BlockDisconnect to take a
CBlockIndex pointing to the block being disconnected.
This new parameter will be use in the following commit to establish
wallet height.
4671fc3d9e Expand on wallet_balance.py comment from https://github.com/bitcoin/bitcoin/pull/16766\#issuecomment-527563982 (Jeremy Rubin)
91f3073f08 Update release notes to mention changes to IsTrusted and impact on wallet (Jeremy Rubin)
8f174ef112 Systematize style of IsTrusted single line if (Jeremy Rubin)
b49dcbedf7 update variable naming conventions for IsTrusted (Jeremy Rubin)
5ffe0d1449 Update comment in test/functional/wallet_balance.py (Jeremy Rubin)
a550c58267 Update wallet_balance.py test to reflect new behavior (Jeremy Rubin)
5dd7da4ccd Reuse trustedParents in looped calls to IsTrusted (Jeremy Rubin)
595f09d6de Cache tx Trust per-call to avoid DoS (Jeremy Rubin)
dce032ce29 Make IsTrusted scan parents recursively (Jeremy Rubin)
Pull request description:
This slightly modifies the behavior of IsTrusted to recursively check the parents of a transaction. Otherwise, it's possible that a parent is not IsTrusted but a child is. If a parent is not trusted, then a child should not be either.
This recursive scan can be a little expensive, so ~it might be beneficial to have a way of caching IsTrusted state, but this is a little complex because various conditions can change between calls to IsTrusted (e.g., re-org).~ I added a cache which works per call/across calls, but does not store the results semi-permanently. Which reduces DoS risk of this change. There is no risk of untrusted parents causing a resource exploitation, as we immediately return once that is detected.
This is a change that came up as a bug-fix esque change while working on OP_SECURETHEBAG. You can see the branch where this change is important here: https://github.com/bitcoin/bitcoin/compare/master...JeremyRubin:stb-with-rpc?expand=1. Essentially, without this change, we can be tricked into accepting an OP_SECURETHEBAG output because we don't properly check the parents. As this was a change which, on its own, was not dependent on OP_SECURETHEBAG, I broke it out as I felt the change stands on its own by fixing a long standing wallet bug.
The test wallet_balance.py has been corrected to meet the new behavior. The below comment, reproduced, explains what the issue is and the edge cases that can arise before this change.
# Before `test_balance()`, we have had two nodes with a balance of 50
# each and then we:
#
# 1) Sent 40 from node A to node B with fee 0.01
# 2) Sent 60 from node B to node A with fee 0.01
#
# Then we check the balances:
#
# 1) As is
# 2) With transaction 2 from above with 2x the fee
#
# Prior to #16766, in this situation, the node would immediately report
# a balance of 30 on node B as unconfirmed and trusted.
#
# After #16766, we show that balance as unconfirmed.
#
# The balance is indeed "trusted" and "confirmed" insofar as removing
# the mempool transactions would return at least that much money. But
# the algorithm after #16766 marks it as unconfirmed because the 'taint'
# tracking of transaction trust for summing balances doesn't consider
# which inputs belong to a user. In this case, the change output in
# question could be "destroyed" by replace the 1st transaction above.
#
# The post #16766 behavior is correct; we shouldn't be treating those
# funds as confirmed. If you want to rely on that specific UTXO existing
# which has given you that balance, you cannot, as a third party
# spending the other input would destroy that unconfirmed.
#
# For example, if the test transactions were:
#
# 1) Sent 40 from node A to node B with fee 0.01
# 2) Sent 10 from node B to node A with fee 0.01
#
# Then our node would report a confirmed balance of 40 + 50 - 10 = 80
# BTC, which is more than would be available if transaction 1 were
# replaced.
The release notes have been updated to note the new behavior.
ACKs for top commit:
ariard:
Code Review ACK 4671fc3, maybe extend DoS protection in a follow-up PR.
fjahr:
Code review ACK 4671fc3d9e
ryanofsky:
Code review ACK 4671fc3d9e. Changes since last review: 2 new commits adding suggested release note and python test comment, also a clean rebase with no changes to the earlier commits. The PR description is more comprehensive now, too. Looks good!
promag:
Code review ACK 4671fc3d9e.
Tree-SHA512: 6b183ff425304fef49724290053514cb2770f4a2350dcb83660ef24af5c54f7c4c2c345b0f62bba60eb2d2f70625ee61a7fab76a7f491bb5a84be5c4cc86b92f
