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refactor: extract descriptor ID calculation from spkm GetID()

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This allows us to verify the descriptor ID on the descriptors
unit tests in different software versions without requiring to
use the entire DescriptorScriptPubKeyMan machinery.

Note:
The unit test changes are introduced after the bugfix commit
but this commit + the unit test commit can be cherry-picked
on top of the v25 branch to verify IDs correctness. IDs must
be the same for v25 and after the bugfix commit.
This commit is contained in:
furszy 2023-06-23 11:32:28 -03:00
parent 1d207e3931
commit 97a965d98f
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GPG Key ID: 5DD23CCC686AA623
3 changed files with 14 additions and 4 deletions
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8
src/script/descriptor.cpp
View File

@ -1778,6 +1778,14 @@ std::unique_ptr<Descriptor> InferDescriptor(const CScript& script, const Signing
return InferScript(script, ParseScriptContext::TOP, provider);
}
uint256 DescriptorID(const Descriptor& desc)
{
std::string desc_str = desc.ToString();
uint256 id;
CSHA256().Write((unsigned char*)desc_str.data(), desc_str.size()).Finalize(id.begin());
return id;
}
void DescriptorCache::CacheParentExtPubKey(uint32_t key_exp_pos, const CExtPubKey& xpub)
{
m_parent_xpubs[key_exp_pos] = xpub;

5
src/script/descriptor.h
View File

@ -182,4 +182,9 @@ std::string GetDescriptorChecksum(const std::string& descriptor);
*/
std::unique_ptr<Descriptor> InferDescriptor(const CScript& script, const SigningProvider& provider);
/** Unique identifier that may not change over time, unless explicitly marked as not backwards compatible.
* This is not part of BIP 380, not guaranteed to be interoperable and should not be exposed to the user.
*/
uint256 DescriptorID(const Descriptor& desc);
#endif // BITCOIN_SCRIPT_DESCRIPTOR_H

5
src/wallet/scriptpubkeyman.cpp
View File

@ -2584,10 +2584,7 @@ std::unique_ptr<CKeyMetadata> DescriptorScriptPubKeyMan::GetMetadata(const CTxDe
uint256 DescriptorScriptPubKeyMan::GetID() const
{
LOCK(cs_desc_man);
std::string desc_str = m_wallet_descriptor.descriptor->ToString();
uint256 id;
CSHA256().Write((unsigned char*)desc_str.data(), desc_str.size()).Finalize(id.begin());
return id;
return DescriptorID(*m_wallet_descriptor.descriptor);
}
void DescriptorScriptPubKeyMan::SetCache(const DescriptorCache& cache)