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Do not store Merkle branches in the wallet.

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Assume that when a wallet transaction has a valid block hash and transaction position
in it, the transaction is actually there. We're already trusting wallet data in a
much more fundamental way anyway.

To prevent backward compatibility issues, a new record is used for storing the
block locator in the wallet. Old wallets will see a wallet file synchronized up
to the genesis block, and rescan automatically.
This commit is contained in:
Pieter Wuille
2015-08-11 21:03:31 +02:00
parent e59d2a80f9
commit 391dff16fe
12 changed files with 25 additions and 73 deletions
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6
src/wallet/walletdb.cpp
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@@ -131,12 +131,14 @@ bool CWalletDB::EraseWatchOnly(const CScript &dest)
bool CWalletDB::WriteBestBlock(const CBlockLocator& locator)
{
nWalletDBUpdated++;
return Write(std::string("bestblock"), locator);
Write(std::string("bestblock"), CBlockLocator()); // Write empty block locator so versions that require a merkle branch automatically rescan
return Write(std::string("bestblock_nomerkle"), locator);
}
bool CWalletDB::ReadBestBlock(CBlockLocator& locator)
{
return Read(std::string("bestblock"), locator);
if (Read(std::string("bestblock"), locator) && !locator.vHave.empty()) return true;
return Read(std::string("bestblock_nomerkle"), locator);
}
bool CWalletDB::WriteOrderPosNext(int64_t nOrderPosNext)