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author | Andrew Chow <achow101-github@achow101.com> | 2019-12-05 15:23:05 -0500 |
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committer | Andrew Chow <achow101-github@achow101.com> | 2020-05-15 18:00:04 -0400 |
commit | 45f2f6a0e8514a0438a87554400bf73cbb90707f (patch) | |
tree | 979ce45063a88655f050cb2b0f2a31e56b6cca38 | |
parent | b59b4504abf96cec860badfed2ac793ae5d40ced (diff) | |
download | bitcoin-45f2f6a0e8514a0438a87554400bf73cbb90707f.tar.xz |
Determine inactive HD seeds from key metadata and track them in LegacyScriptPubKeyMan
-rw-r--r-- | src/wallet/scriptpubkeyman.cpp | 25 | ||||
-rw-r--r-- | src/wallet/scriptpubkeyman.h | 15 | ||||
-rw-r--r-- | src/wallet/walletdb.cpp | 75 | ||||
-rw-r--r-- | src/wallet/walletdb.h | 5 |
4 files changed, 116 insertions, 4 deletions
diff --git a/src/wallet/scriptpubkeyman.cpp b/src/wallet/scriptpubkeyman.cpp index 2b5522ece2..883a8be943 100644 --- a/src/wallet/scriptpubkeyman.cpp +++ b/src/wallet/scriptpubkeyman.cpp @@ -839,12 +839,29 @@ bool LegacyScriptPubKeyMan::AddWatchOnly(const CScript& dest, int64_t nCreateTim void LegacyScriptPubKeyMan::SetHDChain(const CHDChain& chain, bool memonly) { LOCK(cs_KeyStore); - if (!memonly && !WalletBatch(m_storage.GetDatabase()).WriteHDChain(chain)) - throw std::runtime_error(std::string(__func__) + ": writing chain failed"); + // memonly == true means we are loading the wallet file + // memonly == false means that the chain is actually being changed + if (!memonly) { + // Store the new chain + if (!WalletBatch(m_storage.GetDatabase()).WriteHDChain(chain)) { + throw std::runtime_error(std::string(__func__) + ": writing chain failed"); + } + // When there's an old chain, add it as an inactive chain as we are now rotating hd chains + if (!m_hd_chain.seed_id.IsNull()) { + AddInactiveHDChain(m_hd_chain); + } + } m_hd_chain = chain; } +void LegacyScriptPubKeyMan::AddInactiveHDChain(const CHDChain& chain) +{ + LOCK(cs_KeyStore); + assert(!chain.seed_id.IsNull()); + m_inactive_hd_chains[chain.seed_id] = chain; +} + bool LegacyScriptPubKeyMan::HaveKey(const CKeyID &address) const { LOCK(cs_KeyStore); @@ -1011,8 +1028,8 @@ void LegacyScriptPubKeyMan::DeriveNewChildKey(WalletBatch &batch, CKeyMetadata& std::copy(master_id.begin(), master_id.begin() + 4, metadata.key_origin.fingerprint); metadata.has_key_origin = true; // update the chain model in the database - if (!batch.WriteHDChain(hd_chain)) - throw std::runtime_error(std::string(__func__) + ": Writing HD chain model failed"); + if (hd_chain.seed_id == m_hd_chain.seed_id && !batch.WriteHDChain(hd_chain)) + throw std::runtime_error(std::string(__func__) + ": writing HD chain model failed"); } void LegacyScriptPubKeyMan::LoadKeyPool(int64_t nIndex, const CKeyPool &keypool) diff --git a/src/wallet/scriptpubkeyman.h b/src/wallet/scriptpubkeyman.h index f7b0be4e97..0f43564748 100644 --- a/src/wallet/scriptpubkeyman.h +++ b/src/wallet/scriptpubkeyman.h @@ -18,6 +18,8 @@ #include <boost/signals2/signal.hpp> +#include <unordered_map> + enum class OutputType; // Wallet storage things that ScriptPubKeyMans need in order to be able to store things to the wallet database. @@ -143,6 +145,17 @@ public: } }; +class KeyIDHasher +{ +public: + KeyIDHasher() {} + + size_t operator()(const CKeyID& id) const + { + return id.GetUint64(0); + } +}; + /* * A class implementing ScriptPubKeyMan manages some (or all) scriptPubKeys used in a wallet. * It contains the scripts and keys related to the scriptPubKeys it manages. @@ -288,6 +301,7 @@ private: /* the HD chain data model (external chain counters) */ CHDChain m_hd_chain; + std::unordered_map<CKeyID, CHDChain, KeyIDHasher> m_inactive_hd_chains; /* HD derive new child key (on internal or external chain) */ void DeriveNewChildKey(WalletBatch& batch, CKeyMetadata& metadata, CKey& secret, CHDChain& hd_chain, bool internal = false) EXCLUSIVE_LOCKS_REQUIRED(cs_KeyStore); @@ -397,6 +411,7 @@ public: /* Set the HD chain model (chain child index counters) */ void SetHDChain(const CHDChain& chain, bool memonly); const CHDChain& GetHDChain() const { return m_hd_chain; } + void AddInactiveHDChain(const CHDChain& chain); //! Adds a watch-only address to the store, without saving it to disk (used by LoadWallet) bool LoadWatchOnly(const CScript &dest); diff --git a/src/wallet/walletdb.cpp b/src/wallet/walletdb.cpp index 79316ca3e7..49db7914e4 100644 --- a/src/wallet/walletdb.cpp +++ b/src/wallet/walletdb.cpp @@ -10,6 +10,7 @@ #include <protocol.h> #include <serialize.h> #include <sync.h> +#include <util/bip32.h> #include <util/system.h> #include <util/time.h> #include <wallet/wallet.h> @@ -245,6 +246,7 @@ public: std::map<uint256, DescriptorCache> m_descriptor_caches; std::map<std::pair<uint256, CKeyID>, CKey> m_descriptor_keys; std::map<std::pair<uint256, CKeyID>, std::pair<CPubKey, std::vector<unsigned char>>> m_descriptor_crypt_keys; + std::map<uint160, CHDChain> m_hd_chains; CWalletScanState() { } @@ -405,6 +407,65 @@ ReadKeyValue(CWallet* pwallet, CDataStream& ssKey, CDataStream& ssValue, ssValue >> keyMeta; wss.nKeyMeta++; pwallet->GetOrCreateLegacyScriptPubKeyMan()->LoadKeyMetadata(vchPubKey.GetID(), keyMeta); + + // Extract some CHDChain info from this metadata if it has any + if (keyMeta.nVersion >= CKeyMetadata::VERSION_WITH_HDDATA && !keyMeta.hd_seed_id.IsNull() && keyMeta.hdKeypath.size() > 0) { + // Get the path from the key origin or from the path string + // Not applicable when path is "s" as that indicates a seed + bool internal = false; + uint32_t index = 0; + if (keyMeta.hdKeypath != "s") { + std::vector<uint32_t> path; + if (keyMeta.has_key_origin) { + // We have a key origin, so pull it from its path vector + path = keyMeta.key_origin.path; + } else { + // No key origin, have to parse the string + if (!ParseHDKeypath(keyMeta.hdKeypath, path)) { + strErr = "Error reading wallet database: keymeta with invalid HD keypath"; + return false; + } + } + + // Extract the index and internal from the path + // Path string is m/0'/k'/i' + // Path vector is [0', k', i'] (but as ints OR'd with the hardened bit + // k == 0 for external, 1 for internal. i is the index + if (path.size() != 3) { + strErr = "Error reading wallet database: keymeta found with unexpected path"; + return false; + } + if (path[0] != 0x80000000) { + strErr = strprintf("Unexpected path index of 0x%08x (expected 0x80000000) for the element at index 0", path[0]); + return false; + } + if (path[1] != 0x80000000 && path[1] != (1 | 0x80000000)) { + strErr = strprintf("Unexpected path index of 0x%08x (expected 0x80000000 or 0x80000001) for the element at index 1", path[1]); + return false; + } + if ((path[2] & 0x80000000) == 0) { + strErr = strprintf("Unexpected path index of 0x%08x (expected to be greater than or equal to 0x80000000)", path[2]); + return false; + } + internal = path[1] == (1 | 0x80000000); + index = path[2] & ~0x80000000; + } + + // Insert a new CHDChain, or get the one that already exists + auto ins = wss.m_hd_chains.emplace(keyMeta.hd_seed_id, CHDChain()); + CHDChain& chain = ins.first->second; + if (ins.second) { + // For new chains, we want to default to VERSION_HD_BASE until we see an internal + chain.nVersion = CHDChain::VERSION_HD_BASE; + chain.seed_id = keyMeta.hd_seed_id; + } + if (internal) { + chain.nVersion = CHDChain::VERSION_HD_CHAIN_SPLIT; + chain.nInternalChainCounter = std::max(chain.nInternalChainCounter, index); + } else { + chain.nExternalChainCounter = std::max(chain.nExternalChainCounter, index); + } + } } else if (strType == DBKeys::WATCHMETA) { CScript script; ssKey >> script; @@ -728,6 +789,20 @@ DBErrors WalletBatch::LoadWallet(CWallet* pwallet) result = DBErrors::CORRUPT; } + // Set the inactive chain + if (wss.m_hd_chains.size() > 0) { + LegacyScriptPubKeyMan* legacy_spkm = pwallet->GetLegacyScriptPubKeyMan(); + if (!legacy_spkm) { + pwallet->WalletLogPrintf("Inactive HD Chains found but no Legacy ScriptPubKeyMan\n"); + return DBErrors::CORRUPT; + } + for (const auto& chain_pair : wss.m_hd_chains) { + if (chain_pair.first != pwallet->GetLegacyScriptPubKeyMan()->GetHDChain().seed_id) { + pwallet->GetLegacyScriptPubKeyMan()->AddInactiveHDChain(chain_pair.second); + } + } + } + return result; } diff --git a/src/wallet/walletdb.h b/src/wallet/walletdb.h index 2701481c58..4374d61dfb 100644 --- a/src/wallet/walletdb.h +++ b/src/wallet/walletdb.h @@ -116,6 +116,11 @@ public: nInternalChainCounter = 0; seed_id.SetNull(); } + + bool operator==(const CHDChain& chain) const + { + return seed_id == chain.seed_id; + } }; class CKeyMetadata |