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desprout

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This commit is contained in:
Duke Leto
2020-06-03 22:20:10 -04:00
parent 52e3739671
commit 7c6c7150c6
7 changed files with 6 additions and 296 deletions
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27
src/coins.cpp
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@@ -628,33 +628,6 @@ bool CCoinsViewCache::HaveJoinSplitRequirements(const CTransaction& tx) const
{
boost::unordered_map<uint256, SproutMerkleTree, CCoinsKeyHasher> intermediates;
BOOST_FOREACH(const JSDescription &joinsplit, tx.vjoinsplit)
{
BOOST_FOREACH(const uint256& nullifier, joinsplit.nullifiers)
{
if (GetNullifier(nullifier, SPROUT)) {
// If the nullifier is set, this transaction
// double-spends!
return false;
}
}
SproutMerkleTree tree;
auto it = intermediates.find(joinsplit.anchor);
if (it != intermediates.end()) {
tree = it->second;
} else if (!GetSproutAnchorAt(joinsplit.anchor, tree)) {
return false;
}
BOOST_FOREACH(const uint256& commitment, joinsplit.commitments)
{
tree.append(commitment);
}
intermediates.insert(std::make_pair(tree.root(), tree));
}
for (const SpendDescription &spendDescription : tx.vShieldedSpend) {
if (GetNullifier(spendDescription.nullifier, SAPLING)) { // Prevent double spends
LogPrintf("%s: sapling nullifier %s exists, preventing double spend\n", __FUNCTION__, spendDescription.nullifier.GetHex().c_str());