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context information
9b526727000509dc6ef90f2ce6a9049edebf959c For descriptor pubkey parse errors, include context information (Ben Woosley)
Pull request description:
This adds readily-available context information to the error string, for further disambiguation.
This is a revival of #16123 which was largely addressed in #16542.
Note 'Multi:' is used rather than 'multi():' as it also encompasses 'sortedmulti():'
ACKs for top commit:
achow101:
ACK 9b526727000509dc6ef90f2ce6a9049edebf959c
theStack:
ACK 9b526727000509dc6ef90f2ce6a9049edebf959c
Tree-SHA512: 96533ea8c3ac7010f9b62e75b4bd20b65aff843030eb91c7a88312975acecaaf17909b7d1841f45edc86dbf7fa402d208adb85f0673bd79b857dbebacb8c9395
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multisig inside tr
4828d53eccd52a67631c64cef0ba7df90dff138d Add (sorted)multi_a descriptors to doc/descriptors.md (Pieter Wuille)
b5f33ac1f82aea290b4653af36ac2ad1bf1cce7b Simplify wallet_taproot.py functional test (Pieter Wuille)
eb0667ea96d52db9135514a5e95ab943f6abd8a6 Add tests for (sorted)multi_a derivation/signing (Pieter Wuille)
c17c6aa08df81aa0086d80b50187c8cd60ecc222 Add signing support for (sorted)multi_a scripts (Pieter Wuille)
3eed6fca57d1fa7544f372e6e7de0a9ae1b5715a Add multi_a descriptor inference (Pieter Wuille)
79728c4a3d8a74f276daf1e72abbdecdab85a5d8 Add (sorted)multi_a descriptor and script derivation (Pieter Wuille)
25e95f9ff89a97b87ce218f28274c3c821b2d54d Merge/generalize IsValidMultisigKeyCount/GetMultisigKeyCount (Pieter Wuille)
Pull request description:
This adds a new `multi_a(k,key_1,key_2,...,key_n)` (and corresponding `sortedmulti_a`) descriptor for k-of-n policies inside `tr()`. Semantically it is very similar to the existing `multi()` descriptor, but with the following changes:
* The corresponding script is `<key1> OP_CHECKSIG <key2> OP_CHECKSIGADD <key3> OP_CHECKSIGADD ... <key_n> OP_CHECKSIGADD <k> OP_NUMEQUAL`, rather than the traditional `OP_CHECKMULTISIG`-based script, making it usable inside the `tr()` descriptor.
* The keys can optionally be specified in x-only notation.
* Both the number of keys and the threshold can be as high as 999; this is the limit due to the consensus stacksize=1000 limit
I expect that this functionality will later be replaced with a miniscript-based implementation, but I don't think it's necessary to wait for that.
Limitations:
* The wallet code will for not estimate witness size incorrectly for script path spends, which may result in a (dramatic) fee underpayment with large multi_a scripts.
* The multi_a script construction is (slightly) suboptimal for n-of-n (where a `<key1> OP_CHECKSIGVERIFY ... <key_n-1> OP_CHECKSIGVERIFY <key_n> OP_CHECKSIG` would be better). Such a construction is not included here.
ACKs for top commit:
achow101:
ACK 4828d53eccd52a67631c64cef0ba7df90dff138d
gruve-p:
ACK https://github.com/bitcoin/bitcoin/pull/24043/commits/4828d53eccd52a67631c64cef0ba7df90dff138d
sanket1729:
code review ACK 4828d53eccd52a67631c64cef0ba7df90dff138d
darosior:
Code review ACK 4828d53eccd52a67631c64cef0ba7df90dff138d
Tree-SHA512: 5dcd434b79585f0ff830f7d501d27df5e346f5749f47a3109ec309ebf2cbbad0e1da541eec654026d911ab67fd7cf7793fab0f765628d68d81b96ef2a4d234ce
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Note 'Multi:' is used rather than 'multi():' as it also encompasses 'sortedmulti():'
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-BEGIN VERIFY SCRIPT-
./contrib/devtools/copyright_header.py update ./
-END VERIFY SCRIPT-
Commits of previous years:
* 2020: fa0074e2d82928016a43ca408717154a1c70a4db
* 2019: aaaaad6ac95b402fe18d019d67897ced6b316ee0
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Based on suggestions by MarcoFalke <falke.marco@gmail.com>
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When expanding the scripts for a TRDescriptor, also store the pubkeys in
the FlatSigningProvider.
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The places where we need to lookup information for a XOnlyPubKey
currently implement a hack which makes both serializations of the full
pubkey in order to try the CKeyIDs for the lookup functions. Instead of
duplicating this everywhere it is needed, we can consolidate the CKeyID
generation into a function, and then have wrappers around GetPubKey,
GetKey, and GetKeyOrigin which takes the XOnlyPubKey, retrieves all of
the CKeyIDs (using the new GetKeyIDs() function in XOnlyPubKey), and
tries their respective underlying lookup function.
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Use the descriptor xpub cache in ToNormalizedString so that the wallet
does not need to be unlocked in order to get the normalized descriptor.
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Instead of having multiple, possibly conflicting, bools controlling the
flow of ToStringHelper, use an enum.
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Cache the last hardenex xpub in the DescriptorCache
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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.
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This reverts commit 09e25071f40c564af08a1386c39c4f2d8eb484b6.
The changes made in this commit have turned out to be unnecessary and
confusing, so it is being reverted.
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support for fetching bech32m addresses
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
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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.
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The tr() descriptor, WitnessV1Taproot CTxDestination, and
WitnessUnknown CTxDestination are OutputType::BECH32M so they should
report as such.
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This data structures stores all information necessary for spending a taproot
output (the internal key, the Merkle root, and the control blocks for every
script leaf).
It is added to signing providers, and populated by the tr() descriptor.
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This adds a new descriptor with syntax e.g. tr(KEY,{S1,{{S2,S3},S4})
where KEY is a key expression for the internal key and S_i are
script expression for the leaves. They have to be organized in
nested {A,B} groups, with exactly two elements.
tr() only exists at the top level, and inside the script expressions
only pk() scripts are allowed for now.
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Signed-off-by: Antoine Poinsot <darosior@protonmail.com>
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It looks like #21238 introduced a silent merge conflict in the
documentation, which fails with `-Wdocumentation` in the CI.
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This changes all context dependent checks in the parser to be
disjunctions of equality checks, rather than also including inequalities.
This makes sure that adding a new context enum in the future won't change
semantics for existing checks.
The error messages are also made a bit more consistent.
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This is a preparation for parsing xonly pubkeys, which will complicate
this logic. It's cleaner to put the decision logic close to the public
key parsing itself.
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This will allow subclasses to overwrite the serialization of subscript
arguments without needing to reimplement all the rest of the ToString
logic.
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This has no effect for now, as the only fragments with sub-script
expressions (sh, wsh) only allow one, and don't have key expressions
in them.
A future Taproot descriptor will however violate both, and we want
the keys in different sub-scripts to be assigned non-overlapping
cache indices.
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So far, no descriptor exists that supports more than one sub-script
descriptor. This will change with taproot, so prepare for this by
changing the m_subdescriptor_arg from a unique_ptr to a vector of
unique_ptr's.
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There are currently two DescriptorImpl subclasses that rely on the functionality
that ExpandHelper automatically adds subscripts to the output SigningProvider.
Taproot descriptors will have subscripts, but we don't want them in the
SigningProvider's bare script field. To avoid them ending up there, move this
functionality into the specific classes' MakeScripts implementation.
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-BEGIN VERIFY SCRIPT-
git rm src/optional.h
sed -i -e 's/Optional</std::optional</g' $(git grep -l 'Optional<' src)
sed -i -e 's/{nullopt}/{std::nullopt}/g' $(git grep -l 'nullopt' src)
sed -i -e 's/ nullopt;/ std::nullopt;/g' $(git grep -l 'nullopt' src)
sed -i -e 's/ nullopt)/ std::nullopt)/g' $(git grep -l 'nullopt' src)
sed -i -e 's/(nullopt)/(std::nullopt)/g' $(git grep -l 'nullopt' src)
sed -i -e 's/ nullopt,/ std::nullopt,/g' $(git grep -l 'nullopt' src)
sed -i -e 's/? nullopt :/? std::nullopt :/g' $(git grep -l 'nullopt' src)
sed -i -e 's/: nullopt}/: std::nullopt}/g' $(git grep -l 'nullopt' src)
sed -i -e '/optional.h \\/d' src/Makefile.am
sed -i -e '/#include <optional.h>/d' src/test/fuzz/autofile.cpp src/test/fuzz/buffered_file.cpp src/test/fuzz/node_eviction.cpp
sed -i -e 's/#include <optional.h>/#include <optional>/g' $(git grep -l '#include <optional.h>' src)
-END VERIFY SCRIPT-
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-BEGIN VERIFY SCRIPT-
git rm src/util/memory.h
sed -i -e 's/MakeUnique/std::make_unique/g' $(git grep -l MakeUnique src)
sed -i -e '/#include <util\/memory.h>/d' $(git grep -l '#include <util/memory.h>' src)
sed -i -e '/util\/memory.h \\/d' src/Makefile.am
-END VERIFY SCRIPT-
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de6b389d5db7b8426313c5be6fbd290f992c5aa8 tests: Test getaddressinfo parent_desc (Andrew Chow)
e4ac869a0a0083e2e3af3b56301bd5c8e0cf650b rpc: Add parent descriptor to getaddressinfo output (Andrew Chow)
bbe4a36152fb8d9c8c3682ca2380f1c88cca61cb wallet: Add GetDescriptorString to DescriptorScriptPubKeyMan (Andrew Chow)
9be1437c49f986e8ed964d5f863b4bbcec340751 descriptors: Add ToNormalizedString and tests (Andrew Chow)
Pull request description:
Adds `parent_desc` field to the `getaddressinfo` RPC to export a public descriptor. Using the given address, `getaddressinfo` will look up which `DescriptorScriptPubKeyMan` can be used to produce that address. It will then return the descriptor for that `DescriptorScriptPubKeyMan` in the `parent_desc` field. The descriptor will be in a normalized form where the xpub at the last hardened step is derived so that the descriptor can be imported to other wallets. Tests are added to check that the correct descriptor is being returned for the wallet's addresses and that these descriptors can be imported and used in other wallets.
As part of this PR, a `ToNormalizedString` function is added to the descriptor classes. This really only has an effect on `BIP32PubkeyProvider`s that have hardened derivation steps. Tests are added to check that normalized descriptors are returned.
ACKs for top commit:
Sjors:
utACK de6b389d5db7b8426313c5be6fbd290f992c5aa8
S3RK:
Tested ACK de6b389
jonatack:
Tested ACK de6b389d5db7b8426313c5be6fbd290f992c5aa8 modulo a few minor comments
fjahr:
Code review ACK de6b389d5db7b8426313c5be6fbd290f992c5aa8
meshcollider:
Tested ACK de6b389d5db7b8426313c5be6fbd290f992c5aa8
Tree-SHA512: a633e4a39f2abbd95afd7488484cfa66fdd2651dac59fe59f2b80a0940a2a4a13acf889c534a6948903d701484a2ba1218e3081feafe0b9a720dccfa9e43ca2b
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-BEGIN VERIFY SCRIPT-
sed -i "s/NODISCARD/[[nodiscard]]/g" $(git grep -l "NODISCARD" ":(exclude)src/bench/nanobench.h" ":(exclude)src/attributes.h")
-END VERIFY SCRIPT-
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Make HexStr take a span of bytes, instead of an awkward pair of
templated iterators.
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fa32adf9dc25540ad27f5b82654c7057d7738627 scripted-diff: TxoutType C++11 scoped enum class (MarcoFalke)
fa95a694c492b267e4038674fd3f338dd215ab48 doc: Update outdated txnouttype documentation (MarcoFalke)
fa58469c770d8c935a86462634e4e8cd806aa6e3 rpc: Properly use underlying type in GetAllOutputTypes (MarcoFalke)
fa41c657022b8f99c8e6718a0e33c5838c412a0b 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 fa32adf9dc25540ad27f5b82654c7057d7738627 -- patch looks correct
hebasto:
re-ACK fa32adf9dc25540ad27f5b82654c7057d7738627, since fa5997bd6fc82e16b597ea96e3c5c665f1f174ab (https://github.com/bitcoin/bitcoin/pull/19114#pullrequestreview-421425198) rebased only (verified with `git range-diff`).
Tree-SHA512: f42a9db47f9be89fa4bdd8d2fb05a16726286d8b12e3d87327b67d723f91c7d5a57deb4b2ddae9e1d16fee7a5f8c00828b6dc8909c5db680fc5e0a3cf07cd465
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HexStr can be called with anything that bas `begin()` and `end()` functions,
so clean up the redundant calls.
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