diff options
| author | Russell Yanofsky <russ@yanofsky.org> | 2018-10-31 13:00:54 -0400 |
|---|---|---|
| committer | Russell Yanofsky <russ@yanofsky.org> | 2018-11-01 12:55:39 -0400 |
| commit | 535203075e50eedef8f00852328f81f440233278 (patch) | |
| tree | 3ec4c5e88ab257613142f493333292d3e9f3dda2 | |
| parent | bafb921507761217a2e9013a42e0aa619f831ccf (diff) | |
Avoid using numeric_limits for sequence numbers and lock times
Switches to named constants, because numeric_limits calls can be harder to read
and less portable.
Change was suggested by James O'Beirne <james.obeirne@gmail.com> in
https://github.com/bitcoin/bitcoin/pull/10973#discussion_r213473620
There are no changes in behavior except on some platforms we don't support
(ILP64, IP16L32, I16LP32), where SignalsOptInRBF() and MutateTxAddInput()
functions would now work correctly.
| -rw-r--r-- | src/bitcoin-tx.cpp | 2 | ||||
| -rw-r--r-- | src/rpc/rawtransaction.cpp | 10 | ||||
| -rw-r--r-- | src/script/script.h | 6 |
3 files changed, 12 insertions, 6 deletions
diff --git a/src/bitcoin-tx.cpp b/src/bitcoin-tx.cpp index 6d86581ac6..7a3b936d55 100644 --- a/src/bitcoin-tx.cpp +++ b/src/bitcoin-tx.cpp @@ -255,7 +255,7 @@ static void MutateTxAddInput(CMutableTransaction& tx, const std::string& strInpu throw std::runtime_error("invalid TX input vout '" + strVout + "'"); // extract the optional sequence number - uint32_t nSequenceIn=std::numeric_limits<unsigned int>::max(); + uint32_t nSequenceIn = CTxIn::SEQUENCE_FINAL; if (vStrInputParts.size() > 2) nSequenceIn = std::stoul(vStrInputParts[2]); diff --git a/src/rpc/rawtransaction.cpp b/src/rpc/rawtransaction.cpp index a2d990b51d..bcc4db963c 100644 --- a/src/rpc/rawtransaction.cpp +++ b/src/rpc/rawtransaction.cpp @@ -346,7 +346,7 @@ CMutableTransaction ConstructTransaction(const UniValue& inputs_in, const UniVal if (!locktime.isNull()) { int64_t nLockTime = locktime.get_int64(); - if (nLockTime < 0 || nLockTime > std::numeric_limits<uint32_t>::max()) + if (nLockTime < 0 || nLockTime > LOCKTIME_MAX) throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, locktime out of range"); rawTx.nLockTime = nLockTime; } @@ -368,18 +368,18 @@ CMutableTransaction ConstructTransaction(const UniValue& inputs_in, const UniVal uint32_t nSequence; if (rbfOptIn) { - nSequence = MAX_BIP125_RBF_SEQUENCE; + nSequence = MAX_BIP125_RBF_SEQUENCE; /* CTxIn::SEQUENCE_FINAL - 2 */ } else if (rawTx.nLockTime) { - nSequence = std::numeric_limits<uint32_t>::max() - 1; + nSequence = CTxIn::SEQUENCE_FINAL - 1; } else { - nSequence = std::numeric_limits<uint32_t>::max(); + nSequence = CTxIn::SEQUENCE_FINAL; } // set the sequence number if passed in the parameters object const UniValue& sequenceObj = find_value(o, "sequence"); if (sequenceObj.isNum()) { int64_t seqNr64 = sequenceObj.get_int64(); - if (seqNr64 < 0 || seqNr64 > std::numeric_limits<uint32_t>::max()) { + if (seqNr64 < 0 || seqNr64 > CTxIn::SEQUENCE_FINAL) { throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, sequence number is out of range"); } else { nSequence = (uint32_t)seqNr64; diff --git a/src/script/script.h b/src/script/script.h index 00065a24be..1d8ddba2f2 100644 --- a/src/script/script.h +++ b/src/script/script.h @@ -38,6 +38,12 @@ static const int MAX_STACK_SIZE = 1000; // otherwise as UNIX timestamp. static const unsigned int LOCKTIME_THRESHOLD = 500000000; // Tue Nov 5 00:53:20 1985 UTC +// Maximum nLockTime. Since a lock time indicates the last invalid timestamp, a +// transaction with this lock time will never be valid unless lock time +// checking is disabled (by setting all input sequence numbers to +// SEQUENCE_FINAL). +static const uint32_t LOCKTIME_MAX = 0xFFFFFFFFU; + template <typename T> std::vector<unsigned char> ToByteVector(const T& in) { |