754f134a50cc56cdf0baf996d909c992770fcc97 wallet: Add error message to GetReservedDestination (Andrew Chow)
87a0e7a3b7c0ffd545e537bd497cdc3e67d045f6 Disallow bech32m addresses for legacy wallet things (Andrew Chow)
6dbe4d10728f882986ed0d9ed77bc736f051c662 Use BECH32M for tr() desc, WitV1Taproot, and WitUnknown CTxDests (Andrew Chow)
699dfcd8ad9487a4e04c1ffc68211e84e126b3d2 Opportunistically use bech32m change addresses if available (Andrew Chow)
0262536c34567743e527dad46912c9ba493252cd Add OutputType::BECH32M (Andrew Chow)
177c15d2f7cd5406ddbce8217fc023057539b828 Limit LegacyScriptPubKeyMan address types (Andrew Chow)
Pull request description:
Currently bech32m addresses are classfied as bech32. Because bech32m is incompatible with bech32, we need to define a new `OutputType` for it so that it can be handled correctly. This PR adds `OutputType::BECH32M`, updates all of the relevant `OutputType` classifications, and handle requests for bech32m addresses. There is now a `bech32m` address type string that can be used.
* `tr()` descriptors now report their output type as `OutputType::BECH32M`. `WtinessV1Taproot` and `WitnessUnknown` are also classified as `OutputType::BECH32M`.
* Bech32m addresses are completely disabled for legacy wallets. They cannot be imported (explicitly disallowed in `importaddress` and `importmulti`), will not be created when getting all destinations for a pubkey, and will not be added with `addmultisigaddress`. Additional protections have been added to `LegacyScriptPubKeyMan` to disallow attempting to retrieve bech32m addresses.
* Since Taproot multisigs are not implemented yet, `createmultisig` will also disallow the bech32m address type.
* As Taproot is not yet active, `DescriptorScriptPubKeyMan` cannot and will not create a `tr()` descriptor. Protections have been added to make sure this cannot occur.
* The change address type detection algorithm has been updated to return `bech32m` when there is a segwit v1+ output script and the wallet has a bech32m `ScriptPubKeyMan`, falling back to bech32 if one is not available.
ACKs for top commit:
laanwj:
re-review ACK 754f134a50cc56cdf0baf996d909c992770fcc97
Sjors:
re-utACK 754f134: only change is switching to `bech32m` in two `wallet_taproot.py` test cases.
fjahr:
re-ACK 754f134a50cc56cdf0baf996d909c992770fcc97
jonatack:
ACK 754f134a50cc56cdf0baf996d909c992770fcc97
Tree-SHA512: 6ea90867d3631d0d438e2b08ce6ed930f37d01323224661e8e38f183ea5ee2ab65b5891394a3612c7382a1aff907b457616c6725665a10c320174017b998ca9f
d637a9b397816e34652d0c4d383308e39770737a Taproot descriptor inference (Pieter Wuille)
c7388e5ada394b7fe94d6263fb02e9dd28ab367e Report address as solvable based on inferred descriptor (Pieter Wuille)
29e5dd1a5b9a1879e6c3c7e153b2e6f33a79e905 consensus refactor: extract ComputeTapleafHash, ComputeTaprootMerkleRoot (Pieter Wuille)
Pull request description:
Includes:
* First commit from #21365, adding TaprootSpendData in SigningProvider
* A refactor to expose ComputeTapleafHash and ComputeTaprootMerkleRoot from script/interpreter
* A tiny change to make `getaddressinfo` report tr() descriptors as solvable (so that inferred descriptors are shown), despite not having signing code for them.
* Logic to infer the script tree back from TaprootSpendData, and then use that to infer descriptors.
ACKs for top commit:
achow101:
re-ACK d637a9b397816e34652d0c4d383308e39770737a
Sjors:
re-utACK d637a9b
meshcollider:
Code review ACK d637a9b397816e34652d0c4d383308e39770737a
Tree-SHA512: 5ab9b95da662382d8549004be4a1297a577d7caca6b068f875c7c9343723931d03fa9cbf133de11f83b74e4851490ce820fb80413c77b9e8495a5f812e505d86
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.
458a345b0590fd2fa04c7d8d70beb8d57e34bbc8 Add support for SIGHASH_DEFAULT in RPCs, and make it default (Pieter Wuille)
c0f0c8eccb04f90940007e0c6aaff56bf2ab35b5 tests: check spending of P2TR (Pieter Wuille)
a2380127e905e5849f90acc7c69832859d8336aa Basic Taproot signing logic in script/sign.cpp (Pieter Wuille)
49487bc3b6038393c1b9c2dbdc04a78ae1178f1a Make GetInputUTXO safer: verify non-witness UTXO match (Pieter Wuille)
fd3f6890f3dfd683f6f13db912caf5c4288adf08 Construct and use PrecomputedTransactionData in PSBT signing (Pieter Wuille)
5cb6502ac5730ea453edbec4c46027ac2ada97e0 Construct and use PrecomputedTransactionData in SignTransaction (Pieter Wuille)
5d2e22437b22e7465ae4be64069443bcc1769dc9 Don't nuke witness data when signing fails (Pieter Wuille)
ce9353164bdb6215a62b2b6dcb2121d331796f60 Permit full precomputation in PrecomputedTransactionData (Pieter Wuille)
e841fb503d7a662bde01ec2e4794faa989265950 Add precomputed txdata support to MutableTransactionSignatureCreator (Pieter Wuille)
a91d532338ecb66ec5bed164929d878dd55d63a4 Add CKey::SignSchnorr function for BIP 340/341 signing (Pieter Wuille)
e77a2839b54fa2039bba468e8c09dbbbf19b150a Use HandleMissingData also in CheckSchnorrSignature (Pieter Wuille)
dbb0ce9fbff01ffe4dd29da465f43ecaddc2854c Add TaprootSpendData data structure, equivalent to script map for P2[W]SH (Pieter Wuille)
Pull request description:
Builds on top of #22051, adding signing support after derivation support.
Nothing is changed in descriptor features. Signing works for key path and script path spending, through the normal sending functions, and PSBT-based RPCs. However, PSBT usability is rather low as no extensions have been defined to convey Taproot-specific information, so all script information must be known to the signing wallet.
ACKs for top commit:
achow101:
re-ACK 458a345b0590fd2fa04c7d8d70beb8d57e34bbc8
fjahr:
Code review ACK 458a345b0590fd2fa04c7d8d70beb8d57e34bbc8
Sjors:
ACK 458a345b0590fd2fa04c7d8d70beb8d57e34bbc8
Tree-SHA512: 30ed212cf7754763a4a81624ebc084c51727b8322711ac0b390369213c1a891d367ed8b123882ac08c99595320c11ec57ee42304ff22a69afdc3d1a0d55cc711
fbf485c9b2bf1d056bfea77345a15cf56a9cd786 Allow tr() import only when Taproot is active (Andrew Chow)
Pull request description:
To avoid issues around fund loss, only allow descriptor wallets to import `tr()` descriptors after taproot has activated.
ACKs for top commit:
sipa:
utACK fbf485c9b2bf1d056bfea77345a15cf56a9cd786
fjahr:
Code review ACK fbf485c9b2bf1d056bfea77345a15cf56a9cd786
laanwj:
Code review ACK fbf485c9b2bf1d056bfea77345a15cf56a9cd786
prayank23:
utACK fbf485c9b2
Tree-SHA512: 83c43376515eea523dbc89bc5a0fde53e54aec492e49a40c2a33d80fc94aac459e232ae07b024b4bd75b58078c8d090bc7a2d69541c5d3d4834d2f4cfc9c8208
f47e8028391fbcf44fe1dbf3539f42e4185590fd Rearrange fillPSBT arguments (Russell Yanofsky)
Pull request description:
Move fillPSBT inout argument before output-only arguments. This is a nice thing to do to keep the interface style [consistent](https://google.github.io/styleguide/cppguide.html#Inputs_and_Outputs). But motivation is to work around a current limitation of the libmultiprocess code generator (which figures out order of inout parameters by looking at input list, but more ideally would use the output list).
---
This PR is part of the [process separation project](https://github.com/bitcoin/bitcoin/projects/10). The commit was first part of larger PR #10102.
ACKs for top commit:
achow101:
ACK f47e8028391fbcf44fe1dbf3539f42e4185590fd
theStack:
Code-review ACK f47e8028391fbcf44fe1dbf3539f42e4185590fd
Tree-SHA512: 1787af3031ff7ed6b519f3b93054d8b257af96a3380a476a6dab0f759329039ecc5d624b785c5c2d14d594fc852dd81c626880c775c691ec9c79b7b3dbcfb257
Move fillPSBT input-output argument before output-only arguments. This is a
temporary workaround which can go away with improvements to libmultiprocess
code generator. Currently code generator figures out order of input-output
parameters by looking at input list, but it would make more sense for it to
take order from output list, so input-only parameters still have to be first
but there is more flexibility for the other parameters.
e60cd26ad46559770ad84d2959c9a1742ae8b7a6 Do not load external signers wallets when unsupported (Andrew Chow)
Pull request description:
When external signer support is not compiled, do not load external signer wallets.
Alternative to #22168.
ACKs for top commit:
promag:
Tested ACK e60cd26ad46559770ad84d2959c9a1742ae8b7a6.
meshcollider:
Code review ACK e60cd26ad46559770ad84d2959c9a1742ae8b7a6
Tree-SHA512: aed2d0038f448c2f89c6b48f412b106e63c9ed20e748e69aae21fb58c33fc7e4fa73375a52372c73788669eb2b968a8da6b022c65658fa4484f5bbcf205b1b15
d44a261acff40c1c8727d3cc0106bde65a6416d0 Fix issues when `walletdir` is root directory (unknown)
Pull request description:
+ Remove one character less from wallet path
+ After testing lot of random strings with special chars in `wallet_name`, I found that the issue was not related to special characters in the name. Reviewing PR https://github.com/bitcoin/bitcoin/pull/21907 helped me resolve the issue.
**Real issue**: If the path mentioned in `walletdir` is a root directory, first character of the wallet name or path is removed
**Solution**: `if` statement to check `walletdir` is a root directory
Fixes: https://github.com/bitcoin/bitcoin/issues/21510https://github.com/bitcoin/bitcoin/issues/21501
Related PR: https://github.com/bitcoin/bitcoin/pull/20080
Consider the wallet directories `w1` and `w2` saved in `D:\`. Run `bitcoind.exe -walletdir=D:\`, Results for `bitcoin-cli.exe listwalletdir`:
Before this PR:
```
{
"wallets": [
{
"name": "1"
},
{
"name": "2"
}
]
}
```
After this PR:
```
"wallets": [
{
"name": "w1"
},
{
"name": "w2"
}
]
}
```
ACKs for top commit:
ryanofsky:
Code review ACK d44a261acff40c1c8727d3cc0106bde65a6416d0
meshcollider:
utACK d44a261acff40c1c8727d3cc0106bde65a6416d0
Tree-SHA512: b09b00f727407e3771c8694861dae1bfd29d97a0d51ddcb5d9c0111dc618b3fff2f75829cbb4361c54457ee564e94fcefd9e2928262a1c918a2b6bbad724eb55
96c2c9520e80ee4fed92f0e1ab859d59fcbdb110 scripted-diff: Rename SelectCoinsMinConf to AttemptSelection (Andrew Chow)
b583f73354c617ede9145f9738f13cedf1c13e08 Move vin filling to before final fee setting (Andrew Chow)
d39cac0547c960df0a890e89f43b458147b4b07a Set m_subtract_fee_outputs during recipients vector loop (Andrew Chow)
364e0698a543a19e81ae407cc523970e6ed924e8 Move variable initializations to where they are used (Andrew Chow)
32ab430651594ed3d10a6ed75f19de5197f0e9b0 Move recipients vector checks to beginning of CreateTransaction (Andrew Chow)
cd1d6d3324a841087f6d5da723394e8d7df07ec7 Rename nSubtractFeeFromAmount in CreateTransaction (Andrew Chow)
dac21c793f8fbb4d5debc55ac97c406c7c93ff48 Rename nValue and nValueToSelect (Andrew Chow)
d2aee3bbc765a1f02e4ceadb2fa5928ac524f1a7 Remove extraneous scope in CreateTransactionInternal (Andrew Chow)
b2995963b5d0b9bca503b0cc69c747f4cedec1e4 Move cs_wallet lock in CreateTransactionInternal to top of function (Andrew Chow)
Pull request description:
#17331 did some refactors and cleanup of `CreateTransactionInternal` to make it easier to understand, however it is still a bit convoluted even though it doesn't have to be. This PR does additional cleanup and refactoring to `CreateTransactionInternal` so that it is easier to understand. Some unnecessary code was removed, some variables moved around to where they matter, and several indents removed.
ACKs for top commit:
glozow:
reACK 96c2c95
ryanofsky:
Code review ACK 96c2c9520e80ee4fed92f0e1ab859d59fcbdb110 also acked previously (was reverted).
meshcollider:
re-utACK 96c2c9520e80ee4fed92f0e1ab859d59fcbdb110
Tree-SHA512: 3dba67ed436968a07bfd82d435d566ad74e116c6e50ac9baed7144a46ad5c0f630b1ba59d91e8e8972ac2af559d7c0576f0560f09684d2ab20fad6689902866f
1c4b456e1a0ccf0397d652f8c18201c3224c5c21 gui: send using external signer (Sjors Provoost)
24815c6309431cb0797defaf7add1150bcf4b567 gui: wallet creation detects external signer (Sjors Provoost)
3f845ea2994f53e29abeb3fa158c35f1ee56e7e8 node: add externalSigners to interface (Sjors Provoost)
62ac119f919ae1160ed67af796f24b78025fa8e3 gui: display address on external signer (Sjors Provoost)
450cb40a344605dda3bcc39495c35869580b9fc2 wallet: add displayAddress to interface (Sjors Provoost)
eef8d6452962cd4a8956d9ad268164715365b9ab gui: create wallet with external signer (Sjors Provoost)
6cdbc83e9341d1552faee4ccd8c190babc63e8d1 gui: add external signer path to options dialog (Sjors Provoost)
Pull request description:
Big picture overview in [this gist](https://gist.github.com/Sjors/29d06728c685e6182828c1ce9b74483d).
This PR adds GUI support for external signers, based on the since merged bitcoin/bitcoin#16546 (RPC).
The UX isn't amazing - especially the blocking calls - but it works.
First we adds a GUI setting for the signer script (e.g. path to HWI):
<img width="625" alt="Schermafbeelding 2019-08-05 om 19 32 59" src="https://user-images.githubusercontent.com/10217/62483415-e1ff1680-b7b7-11e9-97ca-8d2ce54ca1cb.png">
Then we add an external signer checkbox to the wallet creation dialog:
<img width="374" alt="Schermafbeelding 2019-11-07 om 19 17 23" src="https://user-images.githubusercontent.com/10217/68416387-b57ee000-0194-11ea-9730-127d60273008.png">
It's checked by default if HWI detects a device. It also grabs the name. It then creates a fresh wallet and imports the keys.
You can verify an address on the device (blocking...):
<img width="673" alt="Schermafbeelding 2019-08-05 om 19 29 22" src="https://user-images.githubusercontent.com/10217/62483560-43bf8080-b7b8-11e9-9902-8a036116dc4b.png">
Sending, including coin selection, Just Works(tm) as long the device is present.
~External signer support is enabled by default when the GUI is configured and Boost::Process is present.~
External signer support remains disabled by default, see https://github.com/bitcoin/bitcoin/pull/21935.
ACKs for top commit:
achow101:
Code Review ACK 1c4b456e1a0ccf0397d652f8c18201c3224c5c21
hebasto:
ACK 1c4b456e1a0ccf0397d652f8c18201c3224c5c21, tested on Linux Mint 20.1 (Qt 5.12.8) with HWW `2.0.2-rc.1`.
promag:
Tested ACK 1c4b456e1a0ccf0397d652f8c18201c3224c5c21 but rebased with e033ca1379, with HWI 2.0.2, with Nano S and Nano X.
meshcollider:
re-code-review ACK 1c4b456e1a0ccf0397d652f8c18201c3224c5c21
Tree-SHA512: 3503113c5c69d40adb6ce364d8e7cae23ce82d032a00474ba9aeb6202eb70f496ef4a6bf2e623e5171e524ad31ade7941a4e0e89539c64518aaec74f4562d86b
2667366aaa69447a9de4d819669d254a5ebd4d4b tests: check derivation of P2TR (Pieter Wuille)
7cedafc5412857404e9a6c3450b100cb8ee4081a Add tr() descriptor (derivation only, no signing) (Pieter Wuille)
90fcac365e1616779b40a69736428435df75fdf2 Add TaprootBuilder class (Pieter Wuille)
5f6cc8daa83700d1c949d968a5cf0d935be337b7 Add XOnlyPubKey::CreateTapTweak (Pieter Wuille)
2fbfb1becb3c0c109cd7c30b245b51da22039932 Make consensus checking of tweaks in pubkey.* Taproot-specific (Pieter Wuille)
a4bf84039c00b196b87f969acf6369d72c56ab46 Separate WitnessV1Taproot variant in CTxDestination (Pieter Wuille)
41839bdb89b3777ece2318877b9c7921ecca2472 Avoid dependence on CTxDestination index order (Pieter Wuille)
31df02a07091dbd5e0b315c8e5695e808f3a5505 Change Solver() output for WITNESS_V1_TAPROOT (Pieter Wuille)
4b1cc08f9f94a1e6e1ecba6b97f99b73fb513872 Make XOnlyPubKey act like byte container (Pieter Wuille)
Pull request description:
This is a subset of #21365, to aide review.
This adds support `tr(KEY)` or `tr(KEY,SCRIPT)` or `tr(KEY,{{S1,{{S2,S3},...}},...})` descriptors, describing Taproot outputs with specified internal key, and optionally any number of scripts, in nested groups of 2 inside `{`/`}` if there are more than one. While it permits importing `tr(KEY)`, anything beyond that is just laying foundations for more features later.
Missing:
* Signing support (see #21365)
* Support for more interesting scripts inside the tree (only `pk(KEY)` is supported for now). In particular, a multisig policy based on the new `OP_CHECKSIGADD` opcode would be very useful.
* Inferring `tr()` descriptors from outputs (given sufficient information).
* `getaddressinfo` support.
* MuSig support. Standardizing that is still an ongoing effort, and is generally kind of useless without corresponding PSBT support.
* Convenient ways of constructing descriptors without spendable internal key (especially ones that arent't trivially recognizable as such).
ACKs for top commit:
Sjors:
utACK 2667366 (based on https://github.com/bitcoin/bitcoin/pull/21365#issuecomment-846945215 review, plus the new functional test)
achow101:
Code Review ACK 2667366aaa69447a9de4d819669d254a5ebd4d4b
lsilva01:
Tested ACK 2667366aaa
meshcollider:
utACK 2667366aaa69447a9de4d819669d254a5ebd4d4b
Tree-SHA512: 61046fef22c561228338cb178422f0b782ef6587ec8208d3ce2bd07afcff29a664b54b35c6b01226eb70b6540b43f6dd245043d09aa6cb6db1381b6042667e75
f5ba424cd44619d9b9be88b8593d69a7ba96db26 wallet: Add IsAddressUsed / SetAddressUsed methods (Russell Yanofsky)
62252c95e5aa55f33a5ef22292d5d8161fcb892a interfaces: Stop exposing wallet destdata to gui (Russell Yanofsky)
985430d9b2e183c1f59a34472e413a8d00a7e6da test: Add gui test for wallet receive requests (Russell Yanofsky)
Pull request description:
Stop giving GUI access to destdata rows in database. Replace with narrow API just for saving and reading receive request information.
This simplifies code and should prevent the GUI from interfering with other destdata like address-used status. It also adds some more GUI test coverage.
There are no changes in behavior.
ACKs for top commit:
jarolrod:
tACK f5ba424cd44619d9b9be88b8593d69a7ba96db26
laanwj:
Code review ACK f5ba424cd44619d9b9be88b8593d69a7ba96db26
Tree-SHA512: 5423df4786e537a59013cb5bfb9e1bc29a7ca4b8835360c00cc2165a59f925fdc355907a4ceb8bca0285bb4946ba235bffa7645537a951ad03fd3b4cee17b6b0
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.
c7bd5842e467c4fc286399379572bbdec6b26a4f MOVEONLY: CWallet transaction code out of wallet.cpp/.h (Russell Yanofsky)
Pull request description:
This commit just moves function without making any changes. It can be reviewed with `git log -p -n1 --color-moved=dimmed_zebra`
Motivation for this change is to make `wallet.cpp/h` less monolithic and start to make wallet transaction state tracking comprehensible so bugs in https://github.com/bitcoin-core/bitcoin-devwiki/wiki/Wallet-Transaction-Conflict-Tracking can be fixed safely without introducing new problems.
This moves wallet classes and methods that deal with transactions out of `wallet.cpp/.h` into better organized files:
- `transaction.cpp/.h` - CWalletTx and CMerkleTx class definitions
- `receive.cpp/.h` - functions checking received transactions and computing balances
- `spend.cpp/.h` - functions creating transactions and finding spendable coins
After #20773, when loading is separated from syncing it will also be possible to move more `wallet.cpp/.h` functions to:
- `sync.cpp/.h` - functions handling chain notifications and rescanning
This commit arranges `receive.cpp` and `spend.cpp` functions in dependency order so it's possible to skim `receive.cpp` and get an idea of how computing balances works, and skim `spend.cpp` and get an idea of how transactions are created, without having to jump all over `wallet.cpp` where functions are not in order and there is a lot of unrelated code.
Followup commit "refactor: Detach wallet transaction methods" in https://github.com/bitcoin/bitcoin/pull/21206 follows up this PR and tweaks function names and arguments to reflect new locations. The two commits are split into separate PRs because this commit is more work to maintain and less work to review, while the other commit is less work to maintain and more work to review, so hopefully this commit can be merged earlier.
ACKs for top commit:
Sjors:
re-utACK c7bd5842e467c4fc286399379572bbdec6b26a4f
fjahr:
utACK c7bd5842e467c4fc286399379572bbdec6b26a4f
promag:
Code review ACK c7bd5842e467c4fc286399379572bbdec6b26a4f, verified move only claim.
meshcollider:
Dimmed-zebra-check and functional test run ACK c7bd5842e467c4fc286399379572bbdec6b26a4f
Tree-SHA512: 4981de6911cb1196774db375494355cc9af59b52456129c002d264a77cd9ed6175f8ecbb6b2f492a59a4d5a0def21a39d96fa79c9f4d99be0992985f553be32f
This commit just moves functions without making any changes. It can be
reviewed with `git log -p -n1 --color-moved=dimmed_zebra`
Motivation for this change is to make wallet.cpp/h less monolithic and
start to make wallet transaction state tracking comprehensible so bugs
in
https://github.com/bitcoin-core/bitcoin-devwiki/wiki/Wallet-Transaction-Conflict-Tracking
can be fixed safely without introducing new problems.
This commit moves wallet classes and methods that deal with transactions
out of wallet.cpp/.h into better organized files:
- transaction.cpp/.h - CWalletTx and CMerkleTx class definitions
- receive.cpp/.h - functions checking received transactions and computing balances
- spend.cpp/.h - functions creating transactions and finding spendable coins
After #20773, when loading is separated from syncing it will also be
possible to move more wallet.cpp/.h functions to:
- sync.cpp/.h - functions handling chain notifications and rescanning
This commit arranges receive.cpp and spend.cpp functions in dependency
order so it's possible to skim receive.cpp and get an idea of how
computing balances works, and skim spend.cpp and get an idea of how
transactions are created, without having to jump all over wallet.cpp
where functions are not in order and there is a lot of unrelated code.
Followup commit "refactor: Detach wallet transaction methods" in
https://github.com/bitcoin/bitcoin/pull/21206 follows up this PR and
tweaks function names and arguments to reflect new locations. The two
commits are split into separate PRs because this commit is more work to
maintain and less work to review, while the other commit is less work to
maintain and more work to review, so hopefully this commit can be merged
earlier.
e6fe1c37d0a2f8037996dd80619d6c23ec028729 rpc: Improve avoidpartialspends and avoid_reuse documentation (Fabian Jahr)
8f073076b102b77897e5a025ae555baae3d1f671 wallet: Increase OUTPUT_GROUP_MAX_ENTRIES to 100 (Fabian Jahr)
Pull request description:
Follow-up to #17824.
This increases OUTPUT_GROUP_MAX_ENTRIES to 100 which means that OutputGroups will now be up to 100 outputs large, up from previously 10. The main motivation for this change is that during the PR review club on #17824 [several participants signaled](https://bitcoincore.reviews/17824.html#l-339) that 100 might be a better value here.
I think fees should be manageable for users but more importantly, users should know what they can expect when using the wallet with this configuration, so I also tried to clarify the documentation on `-avoidpartialspends` and `avoid_reuse` a bit. If there are other additional ways how or docs where users can be made aware of the potential consequences of using these parameters, please let me know. Another small upside is that [there seem to be a high number of batching transactions with 100 and 200 inputs](https://miro.medium.com/max/3628/1*sZ5eaBSbsJsHx-J9iztq2g.png)([source](https://medium.com/@hasufly/an-analysis-of-batching-in-bitcoin-9bdf81a394e0)) giving these transactions a bit of a larger anonymity set, although that is probably a very weak argument.
ACKs for top commit:
jnewbery:
ACK e6fe1c37d0
Xekyo:
retACK e6fe1c37d0a2f8037996dd80619d6c23ec028729
rajarshimaitra:
tACK `e6fe1c3`
achow101:
ACK e6fe1c37d0a2f8037996dd80619d6c23ec028729
glozow:
code review ACK e6fe1c37d0
Tree-SHA512: 79685c58bafa64ed8303b0ecd616fce50fc9a2b758aa79833e4ad9f15760e09ab60c007bc16ab4cbc4222e644cfd154f1fa494b0f3a5d86faede7af33a6f2826
51a3ac242c92e69b59df26f8f9e287b31e5c3b0f Have OutputGroup determine the value to use (Andrew Chow)
6d6d2784759878ef0c4ac128d12aac68add1edca Change SelectCoins_test to actually test SelectCoins (Andrew Chow)
9d3bd74ab4430532d6e53eef8cf77ad999044b14 Remove CreateTransaction while loop and some related variables (Andrew Chow)
6f0d5189af4c881fe8b97a0c28ce1ffa33480715 Remove use_bnb and bnb_used (Andrew Chow)
de26eb0e1fa2b6f03c58ba104d00f7a8ffead39c Do both BnB and Knapsack coin selection in SelectCoinsMinConf (Andrew Chow)
01dc8ebda50a382d45d3d169b2c3f3965869dcae Have KnapsackSolver actually use effective values (Andrew Chow)
bf26e018de33216d6f0ed0d6ff822b93536f7cc1 Roll static tx fees into nValueToSelect instead of having it be separate (Andrew Chow)
cc3f14b27c06b7a0da1472f5c7100c3f0b76fd98 Move output reductions for fee to after coin selection (Andrew Chow)
d97d25d95006725e705635530b27643363d6b2a4 Make cost_of_change part of CoinSelectionParams (Andrew Chow)
af5867c89688b06173b295b7c32a42845ea455da Move some calculations to common code in SelectCoinsMinConf (Andrew Chow)
1bf4a62cb61bd4b91d9cd4e379fea2b914786342 scripted-diff: rename some variables (Andrew Chow)
Pull request description:
Changes `KnapsackSolver` to use effective values instead of just the nominal txout value. Since fees are taken into account during the selection itself, we finally get rid of the `CreateTransaction` loop as well as a few other things that only were only necessary because of that loop.
This should not change coin selection behavior at all (except maybe remove weird edge cases that were caused by the loop). In order to keep behavior the same, `KnapsackSolver` will select outputs with a negative effective value (as it did before).
ACKs for top commit:
ryanofsky:
Code review ACK 51a3ac242c92e69b59df26f8f9e287b31e5c3b0f. Looks good to go!
instagibbs:
review ACK 51a3ac242c
meshcollider:
re-light-utACK 51a3ac242c92e69b59df26f8f9e287b31e5c3b0f
Tree-SHA512: 372c27e00edcd5dbf85177421ba88f20bfdaf1791b6e3dc022c44876ecc379403e2375ed69e71c512c49e6af87641001ff385c4b25ab93684b3a08a53bf3824e
4f504f826bcbb1a4aa4701e87cb68da4ca05b857 rpc: fix code comment for bumpfee/psbtbumpfee output (Jon Atack)
5cb7ac23fb97a0cbc75b7eef0951da0e0bc5292b rpc: fix docs for bumpfee psbt update (Jon Atack)
Pull request description:
Follow-up to #21544 and #20891 for the `bumpfee_helper` used for RPCs bumpfee and psbtbumpfee:
- "psbt" field is only returned in psbtbumpfee and not bumpfee
- bumpfee raises if private keys are disabled, so the txid help "Only returned when wallet private keys are enabled." no longer makes sense; remove it
- add missing space in RPC examples ("Bump the fee, get the new transaction'stxid")
- update txid/psbt code comments
ACKs for top commit:
klementtan:
ACK [`4f504f8`](4f504f826b)
Tree-SHA512: 194faf8af52383eb8ac5cd22825265931bcde135dac79d8ecc4f84f698070da9b9373c00eef8623961881bb293157c7c9a0d71d1bcccf481ae3605a2d1444ed8
