CBlock ThinBlockBuilder::finishBlock() {
if (numTxsMissing())
throw thinblock_error("TXs missing. Can't build thin block.");
for (size_t i = 0; i < thinBlock.vtx.size(); ++i)
assert(!thinBlock.vtx[i].IsNull());
bool dummy;
const uint256& root = thinBlock.BuildMerkleTree(&dummy);
if (root != thinBlock.hashMerkleRoot) {
std::stringstream ss;
ss << "Consistency check failure on attempt to reconstruct thin block. "
<< "Expected merkele root hash " << thinBlock.hashMerkleRoot.ToString()
<< ", got " << root.ToString();
throw thinblock_error(ss.str());
}
LogPrintf("reassembled thin block for %s (%d bytes)\n",
thinBlock.GetHash().ToString(),
thinBlock.GetSerializeSize(SER_NETWORK, CBlock::CURRENT_VERSION));
CBlock block = thinBlock;
reset();
return block;
}
std::vector<uint256> ThinBlockBuilder::getHashes(const CMerkleBlock& m) const {
std::vector<uint256> txHashes;
// FIXME: Calculate a sane number of max
// transactions here, or skip the check.
uint256 merkleRoot = CMerkleBlock(m).txn.ExtractMatches(txHashes);
if (m.header.hashMerkleRoot != merkleRoot)
throw thinblock_error("Failed to match Merkle root or bad tree in thin block");
return txHashes;
}
std::vector<ThinTx> ThinBloomStub::allTransactions() const {
std::vector<uint256> txHashes;
// Has a side effect of validating the MerkeleBlock hash
// and can throw a thinblock_error
uint256 merkleRoot = CMerkleBlock(merkleblock).txn.ExtractMatches(txHashes);
if (merkleblock.header.hashMerkleRoot != merkleRoot)
throw thinblock_error("Failed to match Merkle root or bad tree in thin block");
return std::vector<ThinTx>(txHashes.begin(), txHashes.end());
}