Also re-`static`'d a method in src/script/standard.cpp which we had made globally
visible for some historical reason, but which I noticed diffing that file against
upstream.
This is the 43-commit descriptor wallet PR. It was remarkably easy to merge, given
its magnitude. With this commit Elements supports importing Bitcoin descriptors
and deriving (Bitcoin) addresses, though of course it does not support blinding
yet. That is a post-rebase project.
The material changes were:
1. Changing constants in the tests (super annoying but nothing surprising)
2. Adding a missing "skip if this coin is not ours" check in src/script/sign.cpp
which was causing us to erroneously remove existing witnesses from transactions.
This wasn't a problem before this commit since we would only ask specific
scriptpubkeymans to sign, and we'd never ask any to sign inputs we didn't
own. Andy simplified the logic here to always try every scriptpubkeyman,
which means they have to play a bit more nicely with each other.
Other than that, this was a big diff with many conflicts but literally all of
them were "we both added code" and the resolution was to take both sides.
This modifies the CreateTransaction loop in a way not remotely worth the complexity,
and includes an absurdly fragile test where I had to add a bunch of trace statements
and tweak pretty-much every single hardcoded number. Not to name names, but it was
Sjors. (In fairness, the PR is a pure simplification of the CreateTransaction logic,
and it wasn't hard to merge even. It was just the test that caused my grief.)
Adapting the "use a dummy CTxDestination in the case that we cannot retrieve one from
the wallet" logic to our `mapScriptChange` map was not trivial. On my first attempt I
incorrectly assigned a positive vout index to the dummy script, which caused us to
call `ReturnDestination` later on the (unused) dummy destination. This is harmless now,
but when descriptor wallets are introduced in #16528, they introduce an edge case where
returning a null destination can incorrectly mark the 0th key of a BIP32 range as
unused. This triggered a test failure much later, in #19504, which uses descriptor
wallets in fundrawtransaction. The bug was that we'd import a descriptor, mark the
first key as being used, lock the wallet, call `fundrawtransaction` on a transaction
that did not require change (incorrectly marking the first key as unused but leaving
it in the descriptor ScriptPubKeyMan's cache), then call `fundrawtransaction` again
on a transaction that *did* require change. The wallet would then incorrectly retrieve
the "unused" key from cache and use it for change, rather than correctly failing and
advising the user that it could not produce change with a locked wallet and empty
keypool. This was not a fun bug to track down.
Another interesting observation is that branch-and-bound uses the CT size-overestimate
for change when trying to create changeless outputs, while our normal dust detection
uses Core's unchanged "an output is 133 bytes" logic. So when BnB is used we're willing
to delete a far bigger change output than we are when we don't use BnB.
Lest you think this works in Core, they're also inconsistent because BnB uses a
normal fee estimate for gauging change cost, while non-BnB uses the discardfee rate.
My advice is to hold your nose, pull stuff in from Core as it comes in, and thanks
to Andy's efforts things are getting better. Don't bother reviewing this too closely.
I really like this PR, but it wound up being pretty nontrivial to merge.
The crux is that it pulls PSBT signing logic into scriptpubkey manager,
which is where it belongs, but for us this means reasoning about pegins
inside script/sign.cpp.
However, sign.cpp is part of libbitcoin_common, which does not include
anything for reasoning about PoW or RPC (lol) or anything heavy about
that. This means that some pegin validation had to remain split between
the wallet/rpc layer and sign.cpp. I added a new file script/pegins.cpp
which has the (one) method we actually need in sign.cpp.
Aside from that, this diff is very large but is mostly just moving our
code changes to wallet/psbtwallet.* into wallet/wallet.* where those
functions now live. As far as review, it's probably not worthwhile to
spend too much too much time on this since it's going to be change
again in #16528 and others. The test coverage is pretty extensive.
3eb6f8b2e6 wallet (not for backport): improve upgradewallet error messages (Jon Atack)
ca8cd893bb wallet: fix and improve upgradewallet error responses (Jon Atack)
99d56e3571 wallet: fix and improve upgradewallet result responses (Jon Atack)
2498b04ce8 Don't upgrade to HD split if it is already supported (Andrew Chow)
c46c18b788 wallet: refactor GetClosestWalletFeature() (Jon Atack)
Pull request description:
This follows up on #18836 and #20282 to fix and improve the as-yet unreleased `upgradewallet` feature and also implement review follow-up in https://github.com/bitcoin/bitcoin/pull/18836#discussion_r519328607.
This PR fixes 4 upgradewallet issues:
- this bug: https://github.com/bitcoin/bitcoin/pull/20403#discussion_r526063920
- it returns nothing in the absence of an RPC error, which isn't reassuring for users
- it returns the same thing both in the case of a successful upgrade and when no upgrade took place
- the error message object is currently dead code
This PR fixes the above and provides:
...user feedback to not silently return without upgrading
```
{
"wallet_name": "disable private keys",
"previous_version": 169900,
"current_version": 169900,
"result": "Already at latest version. Wallet version unchanged."
}
```
...better feedback after successfully upgrading
```
{
"wallet_name": "watch-only",
"previous_version": 159900,
"current_version": 169900,
"result": "Wallet upgraded successfully from version 159900 to version 169900."
}
```
...helpful error responses
```
{
"wallet_name": "blank",
"previous_version": 169900,
"current_version": 169900,
"error": "Cannot downgrade wallet from version 169900 to version 159900. Wallet version unchanged."
}
{
"wallet_name": "blank",
"previous_version": 130000,
"current_version": 130000,
"error": "Cannot upgrade a non HD split wallet from version 130000 to version 169899 without upgrading to support pre-split keypool. Please use version 169900 or no version specified."
}
```
updated help:
```
upgradewallet ( version )
Upgrade the wallet. Upgrades to the latest version if no version number is specified.
New keys may be generated and a new wallet backup will need to be made.
Arguments:
1. version (numeric, optional, default=169900) The version number to upgrade to. Default is the latest wallet version.
Result:
{ (json object)
"wallet_name" : "str", (string) Name of wallet this operation was performed on
"previous_version" : n, (numeric) Version of wallet before this operation
"current_version" : n, (numeric) Version of wallet after this operation
"result" : "str", (string, optional) Description of result, if no error
"error" : "str" (string, optional) Error message (if there is one)
}
```
ACKs for top commit:
achow101:
ACK 3eb6f8b
MarcoFalke:
review ACK 3eb6f8b2e6 🛡
Tree-SHA512: b767314069e26b5933b123acfea6aa40708507f504bdb22884da020a4ca1332af38a7072b061e36281533af9f4e236d94d3c129daf6fe5b55241127537038eed
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
Moved GetOnlinePakKey to the scriptpubkey manager; the other blinding
stuff remains in the CWallet. At some point after the rebase we should
consider whether there's a better separation to be had between the PAK
related stuff now that we have wallet boxes.
This PR associates OutputType::BECH32 to PAK online keys, where before we
were able to directly access keys from the keypool. In a future refactoring
we should give PAK keys their own output type (and own scriptpubkey manager)
so that the wallet won't accept payments "to the PAK key".
Also changes `ReserveDestination::SetBlindingPubKey` to use a visitor pattern
to apply a blinding pubkey to a destination directly, rather than using the
old hacky method of regenerating the destination by pulling its key (which
is no longer contained in the class) out and giving it to a new constructor.
This was a long-overdue refactoring and the minimal-diff way to get the code
compiling (and it's not bad, maybe 10LOC to add a new visitor class) but
nonetheless I apologize for sticking this into a merge commit.
This is the start of some nontrivial wallet refactoring by achow. See
https://github.com/bitcoin-core/bitcoin-devwiki/wiki/Wallet-Class-Structure-Changes
for a high-level design.
This PR moves some stuff out of CWallet into a dummy "box" LegacyScriptPubKeyMan
which is (currently) very tightly coulped to CWallet. Because of the coupling there
are currently null-checks that cannot fail, things which assume non-nullness which
will eventually be wrong, and a plethora of currently-equivalent ways to get from
a CWallet to a provider or back.
Our approach is basically to ignore the refactoring; leave the blinding key stuff
in CWallet and have it call into the wallet's provider when we are obtaining the
underlying keys.
Later, probably in a post-rebase PR, we should rethink how we manage blinding keys
to more closely match Core's "all keys go into providers" model.
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.
95fedd33a2 refactor: Clean up -Wlogical-op warning (maskoficarus)
Pull request description:
This is a quick patch that fixes#19912 . This change prevents a -Wlogical-op warning that occurs because we're treating a const int value as a boolean. There's no sense checking if a non-zero constant has a value, so I've removed the check.
#18836 also addresses the same warning, but has a larger scope and will require more review. This pull request will act as a patch to prevent this compile warning until 18836 is merged.
ACKs for top commit:
MarcoFalke:
review ACK 95fedd33a2
hebasto:
ACK 95fedd33a2, tested on Linux Mint 20 (x86_64):
Tree-SHA512: 13a9d7f7cb472f4c22a01ca2f9771a75267ff769bdae9d0dc6b2c7f3b05369f6dfa859be2b172b39c15ede6c44cddf556380b3565e42850faa65ccd3fe6e175b
This adds a `TxoutType::WITNESS_V1_TAPROOT` for P2TR outputs, and permits spending
them in standardness rules. No corresponding `CTxDestination` is added for it,
as that isn't needed until we want wallet integration. The taproot validation flags
are also enabled for mempool transactions, and standardness rules are added
(stack item size limit, no annexes).
This commit fixes#19912 by removing a check that always returned true. That check was causing a -Wlogical-op warning because it treated a constant int as though it were a boolean.
3a9aba21a4 Split SetWalletFlags into Add/LoadWalletFlags (Andrew Chow)
d9cd095b59 Split SetActiveScriptPubKeyMan into Add/LoadActiveScriptPubKeyMan (Andrew Chow)
0122fbab4c Split SetHDChain into AddHDChain and LoadHDChain (Andrew Chow)
Pull request description:
`SetHDChaiin`, `SetActiveScriptPubKeyMan`, and `SetWalletFlags` have a `memonly` argument which is kind of confusing, as noted in https://github.com/bitcoin/bitcoin/pull/17681#discussion_r427633081. This PR replaces those functions with `Add*` and `Load*` variants so that they follow the pattern used elsewhere in the wallet.
`AddHDChain`, `AddActiveScriptPubKeyMan`, and `AddWalletFlags` both set their respective variables in `CWallet` and writes them to disk. These functions are used by the actions which modify the wallet such as `sethdseed`, `importdescriptors`, and creating a new wallet.
`LoadHDChain`, `LoadActiveScriptPubKeyMan`, and `LoadWalletFlags` just set the `CWallet` variables. These functions are used by `LoadWallet` when loading the wallet from disk.
ACKs for top commit:
jnewbery:
Code review ACK 3a9aba21a4
ryanofsky:
Code review ACK 3a9aba21a4. Only changes since last review tweaks making m_wallet_flags updates more safe
meshcollider:
utACK 3a9aba21a4
Tree-SHA512: 365aeaafc5ba42879c0eb797ec3beb29ab70e27f917dc880763f743420b3be6ddf797240996beed8a9ad70fb212c2590253c6b44c9dc244529c3939d9538983f
84d295e513 tests: Check that segwit inputs in psbt have both UTXO types (Andrew Chow)
4600479058 psbt: always put a non_witness_utxo and don't remove it (Andrew Chow)
5279d8bc07 psbt: Allow both non_witness_utxo and witness_utxo (Andrew Chow)
72f6bec1da rpc: show both UTXOs in decodepsbt (Andrew Chow)
Pull request description:
Due to recent changes to hardware wallets, the full previous transaction will need to be provided for segwit inputs. Since some software may be checking for the existence of a `witness_utxo` to determine whether to produce a segwit signature, we keep that field to ease the transition.
Because all of the sanity checks implemented by the `IsSane` functions were related to having mixed segwit and non-segwit data in a PSBT, those functions are removed as those checks are no longer proper.
Some tests are updated/removed to accommodate this and a simple test added to check that both UTXOs are being added to segwit inputs.
As discussed in the wallet IRC meeting, our own signer will not require `non_witness_utxo` for segwit inputs.
ACKs for top commit:
Sjors:
utACK 84d295e513 (didn't retest compared to 836d6fc, but fortunately HWI's CI tracks our master branch, with a bunch of hardware wallet simulators)
ryanofsky:
Code review re-ACK 84d295e513. No changes since last review, but now I understand the context better. I think it would good to improve the comments as suggested https://github.com/bitcoin/bitcoin/pull/19215#discussion_r447889473 and maybe refer to
meshcollider:
utACK 84d295e513
Tree-SHA512: ccc1fd3c16ac3859f5aca4fa489bd40f68be0b81bbdc4dd51188bbf28827a8642dc8b605a37318e5f16cf40f1c4910052dace2f27eca21bb58435f02a443e940
fa927ff884 Enable Wswitch for OutputType (MarcoFalke)
faddad71f6 Remove confusing OutputType::CHANGE_AUTO (MarcoFalke)
fa2eb38352 interfaces: Remove unused getDefaultChangeType (MarcoFalke)
Pull request description:
`OutputType::CHANGE_AUTO` is problematic for several reasons:
* An output that is not change must never be described by `CHANGE_AUTO`. Simply allowing that option makes the code confusing and review harder than it needs to be.
* To make review even harder, `CHANGE_AUTO` requires `-Wswitch` to be disabled for `OutputType`
Fix both issues by removing `CHANGE_AUTO` and then enabling `-Wswitch` for `OutputType`
ACKs for top commit:
promag:
Code review ACK fa927ff884.
laanwj:
Code review ACK fa927ff884
Tree-SHA512: 24fd809757aa343866c94dafe9a7130b50cda4f77c97666d407f99b813f75b115a7d8e688a6bc2a737e87cba64ddd4e43f2b3c5538fd35fabb5845807bb39134
fa32adf9dc scripted-diff: TxoutType C++11 scoped enum class (MarcoFalke)
fa95a694c4 doc: Update outdated txnouttype documentation (MarcoFalke)
fa58469c77 rpc: Properly use underlying type in GetAllOutputTypes (MarcoFalke)
fa41c65702 rpc: Simplify GetAllOutputTypes with the Join helper (MarcoFalke)
Pull request description:
Non-scoped enums can accidentally and silently decay into an integral type. Also, the symbol names of the keys are exported to the surrounding (usually global) namespace.
Fix both issues by switching to an `enum class TxoutType` in a (mostly) scripted-diff.
ACKs for top commit:
practicalswift:
ACK fa32adf9dc -- patch looks correct
hebasto:
re-ACK fa32adf9dc, since fa5997bd6fc82e16b597ea96e3c5c665f1f174ab (https://github.com/bitcoin/bitcoin/pull/19114#pullrequestreview-421425198) rebased only (verified with `git range-diff`).
Tree-SHA512: f42a9db47f9be89fa4bdd8d2fb05a16726286d8b12e3d87327b67d723f91c7d5a57deb4b2ddae9e1d16fee7a5f8c00828b6dc8909c5db680fc5e0a3cf07cd465
931dd47608 Make lint-spelling.py happy (Glenn Willen)
11a0ffb29d [gui] Load PSBT from clipboard (Glenn Willen)
a6cb0b0c29 [gui] PSBT Operations Dialog (sign & broadcast) (Glenn Willen)
5dd0c03ffa FillPSBT: report number of inputs signed (or would sign) (Glenn Willen)
9e7b23b733 Improve TransactionErrorString messages. (Glenn Willen)
Pull request description:
Add a "PSBT Operations" dialog, reached from the "Load PSBT..." menu item, giving options to sign or broadcast the loaded PSBT as appropriate, as well as copying the result to the clipboard or saving it to a file.
This is based on Sjors' #17509, and depends on that PR going in first. (It effectively replaces the small "load PSBT" dialog from that PR with a more feature-rich one.)
Some notes:
* The way I display status information is maybe unusual (a status bar, rather than messageboxes.) I think it's helpful to have the information in it be persistent rather than transitory. But if people dislike it, I would probably move the "current state of the transaction" info to the top line of the main label, and the "what action just happened, and did it succeed" info into a messagebox.
* I don't really know much about the translation/localization stuff. I put tr() in all the places it seemed like it ought to go. I did not attempt to translate the result of TransactionErrorString (which is shared by GUI and non-GUI code); I don't know if that's correct, but it matches the "error messages in logs should be googleable in English" heuristic. I don't know whether there are things I should be doing to reduce translator effort (like minimizing the total number of distinct message strings I use, or something.)
* I don't really know how (if?) automated testing is applied to GUI code. I can make a list of PSBTs exercising all the codepaths for manual testing, if that's the right approach. Input appreciated.
ACKs for top commit:
instagibbs:
tested ACK https://github.com/bitcoin/bitcoin/pull/18027/commits/931dd4760855e036c176a23ec2de367c460e4243
Sjors:
re-tACK 931dd47608
jb55:
ACK 931dd47608
achow101:
ACK 931dd47608
Tree-SHA512: ade52471a2242f839a8bd6a1fd231443cc4b43bb9c1de3fb5ace7c5eb59eca99b1f2e9f17dfdb4b08d84d91f5fd65677db1433dd03eef51c7774963ef4e2e74f
-BEGIN VERIFY SCRIPT-
# General rename helper: $1 -> $2
rename_global() { sed -i "s/\<$1\>/$2/g" $(git grep -l "$1"); }
# Helper to rename TxoutType $1
rename_value() {
sed -i "s/ TX_$1,/ $1,/g" src/script/standard.h; # First strip the prefix in the definition (header)
rename_global TX_$1 "TxoutType::$1"; # Then replace globally
}
# Change the type globally to bring it in line with the style-guide
# (clsses are UpperCamelCase)
rename_global 'enum txnouttype' 'enum class TxoutType'
rename_global 'txnouttype' 'TxoutType'
# Now rename each enum value
rename_value 'NONSTANDARD'
rename_value 'PUBKEY'
rename_value 'PUBKEYHASH'
rename_value 'SCRIPTHASH'
rename_value 'MULTISIG'
rename_value 'NULL_DATA'
rename_value 'WITNESS_V0_KEYHASH'
rename_value 'WITNESS_V0_SCRIPTHASH'
rename_value 'WITNESS_UNKNOWN'
-END VERIFY SCRIPT-
These types are equivalent, in data etc, so they need only their
data cast across.
Note a function is used rather than a casting
operator as CKeyID is defined at a lower level than script/standard
In FillPSBT, optionally report the number of inputs we successfully
signed, as an out parameter. If "sign" is false, instead report the
number of inputs for which GetSigningProvider does not return nullptr.
(This is a potentially overbroad estimate of inputs we could sign.)
