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@ -88,10 +88,32 @@ CScript ParseScript(const std::string& s) |
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return result; |
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return result; |
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} |
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} |
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// Check that all of the input and output scripts of a transaction contains valid opcodes
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bool CheckTxScriptsSanity(const CMutableTransaction& tx) |
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{ |
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// Check input scripts for non-coinbase txs
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if (!CTransaction(tx).IsCoinBase()) { |
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for (unsigned int i = 0; i < tx.vin.size(); i++) { |
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if (!tx.vin[i].scriptSig.HasValidOps() || tx.vin[i].scriptSig.size() > MAX_SCRIPT_SIZE) { |
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return false; |
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} |
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} |
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} |
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// Check output scripts
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for (unsigned int i = 0; i < tx.vout.size(); i++) { |
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if (!tx.vout[i].scriptPubKey.HasValidOps() || tx.vout[i].scriptPubKey.size() > MAX_SCRIPT_SIZE) { |
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return false; |
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} |
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} |
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return true; |
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} |
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bool DecodeHexTx(CMutableTransaction& tx, const std::string& strHexTx, bool fTryNoWitness) |
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bool DecodeHexTx(CMutableTransaction& tx, const std::string& strHexTx, bool fTryNoWitness) |
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{ |
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{ |
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if (!IsHex(strHexTx)) |
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if (!IsHex(strHexTx)) { |
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return false; |
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return false; |
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} |
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std::vector<unsigned char> txData(ParseHex(strHexTx)); |
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std::vector<unsigned char> txData(ParseHex(strHexTx)); |
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@ -99,7 +121,7 @@ bool DecodeHexTx(CMutableTransaction& tx, const std::string& strHexTx, bool fTry |
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CDataStream ssData(txData, SER_NETWORK, PROTOCOL_VERSION | SERIALIZE_TRANSACTION_NO_WITNESS); |
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CDataStream ssData(txData, SER_NETWORK, PROTOCOL_VERSION | SERIALIZE_TRANSACTION_NO_WITNESS); |
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try { |
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try { |
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ssData >> tx; |
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ssData >> tx; |
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if (ssData.eof()) { |
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if (ssData.eof() && CheckTxScriptsSanity(tx)) { |
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return true; |
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return true; |
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} |
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} |
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} |
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} |
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@ -111,8 +133,9 @@ bool DecodeHexTx(CMutableTransaction& tx, const std::string& strHexTx, bool fTry |
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CDataStream ssData(txData, SER_NETWORK, PROTOCOL_VERSION); |
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CDataStream ssData(txData, SER_NETWORK, PROTOCOL_VERSION); |
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try { |
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try { |
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ssData >> tx; |
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ssData >> tx; |
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if (!ssData.empty()) |
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if (!ssData.empty()) { |
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return false; |
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return false; |
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} |
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} |
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} |
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catch (const std::exception&) { |
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catch (const std::exception&) { |
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return false; |
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return false; |
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