diff options
Diffstat (limited to 'src/script')
-rw-r--r-- | src/script/interpreter.cpp | 20 | ||||
-rw-r--r-- | src/script/script.h | 3 | ||||
-rw-r--r-- | src/script/sigcache.cpp | 22 | ||||
-rw-r--r-- | src/script/sigcache.h | 21 |
4 files changed, 34 insertions, 32 deletions
diff --git a/src/script/interpreter.cpp b/src/script/interpreter.cpp index 8ecf0bbdac..222cff59ea 100644 --- a/src/script/interpreter.cpp +++ b/src/script/interpreter.cpp @@ -247,10 +247,10 @@ bool EvalScript(std::vector<std::vector<unsigned char> >& stack, const CScript& { static const CScriptNum bnZero(0); static const CScriptNum bnOne(1); - static const CScriptNum bnFalse(0); - static const CScriptNum bnTrue(1); + // static const CScriptNum bnFalse(0); + // static const CScriptNum bnTrue(1); static const valtype vchFalse(0); - static const valtype vchZero(0); + // static const valtype vchZero(0); static const valtype vchTrue(1, 1); CScript::const_iterator pc = script.begin(); @@ -1028,7 +1028,7 @@ bool EvalScript(std::vector<std::vector<unsigned char> >& stack, const CScript& } // Size limits - if (stack.size() + altstack.size() > 1000) + if (stack.size() + altstack.size() > MAX_STACK_SIZE) return set_error(serror, SCRIPT_ERR_STACK_SIZE); } } @@ -1142,24 +1142,24 @@ public: uint256 GetPrevoutHash(const CTransaction& txTo) { CHashWriter ss(SER_GETHASH, 0); - for (unsigned int n = 0; n < txTo.vin.size(); n++) { - ss << txTo.vin[n].prevout; + for (const auto& txin : txTo.vin) { + ss << txin.prevout; } return ss.GetHash(); } uint256 GetSequenceHash(const CTransaction& txTo) { CHashWriter ss(SER_GETHASH, 0); - for (unsigned int n = 0; n < txTo.vin.size(); n++) { - ss << txTo.vin[n].nSequence; + for (const auto& txin : txTo.vin) { + ss << txin.nSequence; } return ss.GetHash(); } uint256 GetOutputsHash(const CTransaction& txTo) { CHashWriter ss(SER_GETHASH, 0); - for (unsigned int n = 0; n < txTo.vout.size(); n++) { - ss << txTo.vout[n]; + for (const auto& txout : txTo.vout) { + ss << txout; } return ss.GetHash(); } diff --git a/src/script/script.h b/src/script/script.h index d7aaa04f80..95a5999a13 100644 --- a/src/script/script.h +++ b/src/script/script.h @@ -30,6 +30,9 @@ static const int MAX_PUBKEYS_PER_MULTISIG = 20; // Maximum script length in bytes static const int MAX_SCRIPT_SIZE = 10000; +// Maximum number of values on script interpreter stack +static const int MAX_STACK_SIZE = 1000; + // Threshold for nLockTime: below this value it is interpreted as block number, // otherwise as UNIX timestamp. static const unsigned int LOCKTIME_THRESHOLD = 500000000; // Tue Nov 5 00:53:20 1985 UTC diff --git a/src/script/sigcache.cpp b/src/script/sigcache.cpp index 6f47b725fb..7bb8d9941b 100644 --- a/src/script/sigcache.cpp +++ b/src/script/sigcache.cpp @@ -15,28 +15,6 @@ #include <boost/thread.hpp> namespace { - -/** - * We're hashing a nonce into the entries themselves, so we don't need extra - * blinding in the set hash computation. - * - * This may exhibit platform endian dependent behavior but because these are - * nonced hashes (random) and this state is only ever used locally it is safe. - * All that matters is local consistency. - */ -class SignatureCacheHasher -{ -public: - template <uint8_t hash_select> - uint32_t operator()(const uint256& key) const - { - static_assert(hash_select <8, "SignatureCacheHasher only has 8 hashes available."); - uint32_t u; - std::memcpy(&u, key.begin()+4*hash_select, 4); - return u; - } -}; - /** * Valid signature cache, to avoid doing expensive ECDSA signature checking * twice for every transaction (once when accepted into memory pool, and diff --git a/src/script/sigcache.h b/src/script/sigcache.h index 60690583de..55cec4cc8d 100644 --- a/src/script/sigcache.h +++ b/src/script/sigcache.h @@ -19,6 +19,27 @@ static const int64_t MAX_MAX_SIG_CACHE_SIZE = 16384; class CPubKey; +/** + * We're hashing a nonce into the entries themselves, so we don't need extra + * blinding in the set hash computation. + * + * This may exhibit platform endian dependent behavior but because these are + * nonced hashes (random) and this state is only ever used locally it is safe. + * All that matters is local consistency. + */ +class SignatureCacheHasher +{ +public: + template <uint8_t hash_select> + uint32_t operator()(const uint256& key) const + { + static_assert(hash_select <8, "SignatureCacheHasher only has 8 hashes available."); + uint32_t u; + std::memcpy(&u, key.begin()+4*hash_select, 4); + return u; + } +}; + class CachingTransactionSignatureChecker : public TransactionSignatureChecker { private: |