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Dump transaction version as an unsigned integer in RPC/TxToUniv

Browse source 
Consensus-wise we already treat it as an unsigned integer (the
only rules around it are in CSV/locktime handling), but changing
the underlying data type means touching consensus code for a
simple cleanup change, which isn't really worth it.

See-also, https://github.com/rust-bitcoin/rust-bitcoin/pull/299
This commit is contained in:
Matt Corallo 2019-08-01 17:54:48 -04:00
parent e653eeff76
commit 970de70bdd
3 changed files with 12 additions and 2 deletions
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7
doc/release-notes-16525.md Normal file
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@ -0,0 +1,7 @@
RPC changes
-----------
Exposed transaction version numbers are now treated as unsigned 32-bit integers
instead of signed 32-bit integers. This matches their treatment in consensus
logic. Versions greater than 2 continue to be non-standard (matching previous
behavior of smaller than 1 or greater than 2 being non-standard).

4
src/core_write.cpp
View file

@ -179,7 +179,9 @@ void TxToUniv(const CTransaction& tx, const uint256& hashBlock, UniValue& entry,
{
entry.pushKV("txid", tx.GetHash().GetHex());
entry.pushKV("hash", tx.GetWitnessHash().GetHex());
entry.pushKV("version", tx.nVersion);
// Transaction version is actually unsigned in consensus checks, just signed in memory,
// so cast to unsigned before giving it to the user.
entry.pushKV("version", static_cast<int64_t>(static_cast<uint32_t>(tx.nVersion)));
entry.pushKV("size", (int)::GetSerializeSize(tx, PROTOCOL_VERSION));
entry.pushKV("vsize", (GetTransactionWeight(tx) + WITNESS_SCALE_FACTOR - 1) / WITNESS_SCALE_FACTOR);
entry.pushKV("weight", GetTransactionWeight(tx));

3
test/functional/rpc_rawtransaction.py
View file

@ -417,11 +417,12 @@ class RawTransactionsTest(BitcoinTestFramework):
####################################
# Test the minimum transaction version number that fits in a signed 32-bit integer.
# As transaction version is unsigned, this should convert to its unsigned equivalent.
tx = CTransaction()
tx.nVersion = -0x80000000
rawtx = ToHex(tx)
decrawtx = self.nodes[0].decoderawtransaction(rawtx)
assert_equal(decrawtx['version'], -0x80000000)
assert_equal(decrawtx['version'], 0x80000000)
# Test the maximum transaction version number that fits in a signed 32-bit integer.
tx = CTransaction()