diff options
Diffstat (limited to 'src/script.cpp')
| -rw-r--r-- | src/script.cpp | 49 |
1 files changed, 47 insertions, 2 deletions
diff --git a/src/script.cpp b/src/script.cpp index 2b66bc73d..f03a1e3cb 100644 --- a/src/script.cpp +++ b/src/script.cpp @@ -1261,7 +1261,7 @@ bool Solver(const CScript& scriptPubKey, txnouttype& typeRet, vector<vector<unsi // Template matching opcodes: if (opcode2 == OP_PUBKEYS) { - while (vch1.size() >= 33 && vch1.size() <= 120) + while (vch1.size() >= 33 && vch1.size() <= 65) { vSolutionsRet.push_back(vch1); if (!script1.GetOp(pc1, opcode1, vch1)) @@ -1275,7 +1275,7 @@ bool Solver(const CScript& scriptPubKey, txnouttype& typeRet, vector<vector<unsi if (opcode2 == OP_PUBKEY) { - if (vch1.size() < 33 || vch1.size() > 120) + if (vch1.size() < 33 || vch1.size() > 65) break; vSolutionsRet.push_back(vch1); } @@ -1863,6 +1863,51 @@ bool CScript::IsPayToScriptHash() const this->at(22) == OP_EQUAL); } +bool CScript::IsPushOnly() const +{ + const_iterator pc = begin(); + while (pc < end()) + { + opcodetype opcode; + if (!GetOp(pc, opcode)) + return false; + // Note that IsPushOnly() *does* consider OP_RESERVED to be a + // push-type opcode, however execution of OP_RESERVED fails, so + // it's not relevant to P2SH as the scriptSig would fail prior to + // the P2SH special validation code being executed. + if (opcode > OP_16) + return false; + } + return true; +} + +bool CScript::HasCanonicalPushes() const +{ + const_iterator pc = begin(); + while (pc < end()) + { + opcodetype opcode; + std::vector<unsigned char> data; + if (!GetOp(pc, opcode, data)) + return false; + if (opcode > OP_16) + continue; + if (opcode < OP_PUSHDATA1 && opcode > OP_0 && (data.size() == 1 && data[0] <= 16)) + // Could have used an OP_n code, rather than a 1-byte push. + return false; + if (opcode == OP_PUSHDATA1 && data.size() < OP_PUSHDATA1) + // Could have used a normal n-byte push, rather than OP_PUSHDATA1. + return false; + if (opcode == OP_PUSHDATA2 && data.size() <= 0xFF) + // Could have used an OP_PUSHDATA1. + return false; + if (opcode == OP_PUSHDATA4 && data.size() <= 0xFFFF) + // Could have used an OP_PUSHDATA2. + return false; + } + return true; +} + class CScriptVisitor : public boost::static_visitor<bool> { private: |