diff options
| -rw-r--r-- | src/script/descriptor.cpp | 48 | ||||
| -rw-r--r-- | src/script/descriptor.h | 8 | ||||
| -rw-r--r-- | src/wallet/rpcdump.cpp | 6 | ||||
| -rwxr-xr-x | test/functional/wallet_importmulti.py | 28 |
4 files changed, 75 insertions, 15 deletions
diff --git a/src/script/descriptor.cpp b/src/script/descriptor.cpp index 9be87fabb0..50119ba184 100644 --- a/src/script/descriptor.cpp +++ b/src/script/descriptor.cpp @@ -164,6 +164,9 @@ struct PubkeyProvider /** Get the descriptor string form including private data (if available in arg). */ virtual bool ToPrivateString(const SigningProvider& arg, std::string& out) const = 0; + + /** Derive a private key, if private data is available in arg. */ + virtual bool GetPrivKey(int pos, const SigningProvider& arg, CKey& key) const = 0; }; class OriginPubkeyProvider final : public PubkeyProvider @@ -195,6 +198,10 @@ public: ret = "[" + OriginString() + "]" + std::move(sub); return true; } + bool GetPrivKey(int pos, const SigningProvider& arg, CKey& key) const override + { + return m_provider->GetPrivKey(pos, arg, key); + } }; /** An object representing a parsed constant public key in a descriptor. */ @@ -222,6 +229,10 @@ public: ret = EncodeSecret(key); return true; } + bool GetPrivKey(int pos, const SigningProvider& arg, CKey& key) const override + { + return arg.GetKey(m_pubkey.GetID(), key); + } }; enum class DeriveType { @@ -266,14 +277,9 @@ public: { if (key) { if (IsHardened()) { - CExtKey extkey; - if (!GetExtKey(arg, extkey)) return false; - for (auto entry : m_path) { - extkey.Derive(extkey, entry); - } - if (m_derive == DeriveType::UNHARDENED) extkey.Derive(extkey, pos); - if (m_derive == DeriveType::HARDENED) extkey.Derive(extkey, pos | 0x80000000UL); - *key = extkey.Neuter().pubkey; + CKey priv_key; + if (!GetPrivKey(pos, arg, priv_key)) return false; + *key = priv_key.GetPubKey(); } else { // TODO: optimize by caching CExtPubKey extkey = m_extkey; @@ -312,6 +318,18 @@ public: } return true; } + bool GetPrivKey(int pos, const SigningProvider& arg, CKey& key) const override + { + CExtKey extkey; + if (!GetExtKey(arg, extkey)) return false; + for (auto entry : m_path) { + extkey.Derive(extkey, entry); + } + if (m_derive == DeriveType::UNHARDENED) extkey.Derive(extkey, pos); + if (m_derive == DeriveType::HARDENED) extkey.Derive(extkey, pos | 0x80000000UL); + key = extkey.key; + return true; + } }; /** Base class for all Descriptor implementations. */ @@ -462,6 +480,20 @@ public: Span<const unsigned char> span = MakeSpan(cache); return ExpandHelper(pos, DUMMY_SIGNING_PROVIDER, &span, output_scripts, out, nullptr) && span.size() == 0; } + + void ExpandPrivate(int pos, const SigningProvider& provider, FlatSigningProvider& out) const final + { + for (const auto& p : m_pubkey_args) { + CKey key; + if (!p->GetPrivKey(pos, provider, key)) continue; + out.keys.emplace(key.GetPubKey().GetID(), key); + } + if (m_script_arg) { + FlatSigningProvider subprovider; + m_script_arg->ExpandPrivate(pos, provider, subprovider); + out = Merge(out, subprovider); + } + } }; /** Construct a vector with one element, which is moved into it. */ diff --git a/src/script/descriptor.h b/src/script/descriptor.h index 907a102284..af7ae229ca 100644 --- a/src/script/descriptor.h +++ b/src/script/descriptor.h @@ -60,6 +60,14 @@ struct Descriptor { * out: scripts and public keys necessary for solving the expanded scriptPubKeys will be put here (may be equal to provider). */ virtual bool ExpandFromCache(int pos, const std::vector<unsigned char>& cache, std::vector<CScript>& output_scripts, FlatSigningProvider& out) const = 0; + + /** Expand the private key for a descriptor at a specified position, if possible. + * + * pos: the position at which to expand the descriptor. If IsRange() is false, this is ignored. + * provider: the provider to query for the private keys. + * out: any private keys available for the specified pos will be placed here. + */ + virtual void ExpandPrivate(int pos, const SigningProvider& provider, FlatSigningProvider& out) const = 0; }; /** Parse a descriptor string. Included private keys are put in out. diff --git a/src/wallet/rpcdump.cpp b/src/wallet/rpcdump.cpp index 2f2fe33ba4..3112dca9f5 100644 --- a/src/wallet/rpcdump.cpp +++ b/src/wallet/rpcdump.cpp @@ -1165,8 +1165,7 @@ static UniValue ProcessImportDescriptor(ImportData& import_data, std::map<CKeyID const UniValue& priv_keys = data.exists("keys") ? data["keys"].get_array() : UniValue(); - // Expand all descriptors to get public keys and scripts. - // TODO: get private keys from descriptors too + // Expand all descriptors to get public keys and scripts, and private keys if available. for (int i = range_start; i <= range_end; ++i) { FlatSigningProvider out_keys; std::vector<CScript> scripts_temp; @@ -1180,7 +1179,10 @@ static UniValue ProcessImportDescriptor(ImportData& import_data, std::map<CKeyID import_data.import_scripts.emplace(x.second); } + parsed_desc->ExpandPrivate(i, keys, out_keys); + std::copy(out_keys.pubkeys.begin(), out_keys.pubkeys.end(), std::inserter(pubkey_map, pubkey_map.end())); + std::copy(out_keys.keys.begin(), out_keys.keys.end(), std::inserter(privkey_map, privkey_map.end())); import_data.key_origins.insert(out_keys.origins.begin(), out_keys.origins.end()); } diff --git a/test/functional/wallet_importmulti.py b/test/functional/wallet_importmulti.py index 7d652a7825..e19c7919a9 100755 --- a/test/functional/wallet_importmulti.py +++ b/test/functional/wallet_importmulti.py @@ -571,6 +571,7 @@ class ImportMultiTest(BitcoinTestFramework): # Test ranged descriptor fails if range is not specified xpriv = "tprv8ZgxMBicQKsPeuVhWwi6wuMQGfPKi9Li5GtX35jVNknACgqe3CY4g5xgkfDDJcmtF7o1QnxWDRYw4H5P26PXq7sbcUkEqeR4fg3Kxp2tigg" addresses = ["2N7yv4p8G8yEaPddJxY41kPihnWvs39qCMf", "2MsHxyb2JS3pAySeNUsJ7mNnurtpeenDzLA"] # hdkeypath=m/0'/0'/0' and 1' + addresses += ["bcrt1qrd3n235cj2czsfmsuvqqpr3lu6lg0ju7scl8gn", "bcrt1qfqeppuvj0ww98r6qghmdkj70tv8qpchehegrg8"] # wpkh subscripts corresponding to the above addresses desc = "sh(wpkh(" + xpriv + "/0'/0'/*'" + "))" self.log.info("Ranged descriptor import should fail without a specified range") self.test_importmulti({"desc": descsum_create(desc), @@ -579,17 +580,17 @@ class ImportMultiTest(BitcoinTestFramework): error_code=-8, error_message='Descriptor is ranged, please specify the range') - # Test importing of a ranged descriptor without keys + # Test importing of a ranged descriptor with xpriv self.log.info("Should import the ranged descriptor with specified range as solvable") self.test_importmulti({"desc": descsum_create(desc), "timestamp": "now", "range": 1}, - success=True, - warnings=["Some private keys are missing, outputs will be considered watchonly. If this is intentional, specify the watchonly flag."]) + success=True) for address in addresses: test_address(self.nodes[1], - key.p2sh_p2wpkh_addr, - solvable=True) + address, + solvable=True, + ismine=True) self.test_importmulti({"desc": descsum_create(desc), "timestamp": "now", "range": -1}, success=False, error_code=-8, error_message='End of range is too high') @@ -606,6 +607,23 @@ class ImportMultiTest(BitcoinTestFramework): self.test_importmulti({"desc": descsum_create(desc), "timestamp": "now", "range": [0, 1000001]}, success=False, error_code=-8, error_message='Range is too large') + # Test importing a descriptor containing a WIF private key + wif_priv = "cTe1f5rdT8A8DFgVWTjyPwACsDPJM9ff4QngFxUixCSvvbg1x6sh" + address = "2MuhcG52uHPknxDgmGPsV18jSHFBnnRgjPg" + desc = "sh(wpkh(" + wif_priv + "))" + self.log.info("Should import a descriptor with a WIF private key as spendable") + self.test_importmulti({"desc": descsum_create(desc), + "timestamp": "now"}, + success=True) + test_address(self.nodes[1], + address, + solvable=True, + ismine=True) + + # dump the private key to ensure it matches what was imported + privkey = self.nodes[1].dumpprivkey(address) + assert_equal(privkey, wif_priv) + # Test importing of a P2PKH address via descriptor key = get_key(self.nodes[0]) self.log.info("Should import a p2pkh address from descriptor") |