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script: Remove magic numbers

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This adds two new constants, MAX_OPS_PER_SCRIPT and
MAX_PUBKEYS_PER_MULTISIG.
This commit is contained in:
David Hill
2015-10-13 09:56:45 -04:00
parent d78a880900
commit b48da5c189
3 changed files with 12 additions and 5 deletions
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6
src/script/interpreter.cpp
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@@ -273,7 +273,7 @@ bool EvalScript(vector<vector<unsigned char> >& stack, const CScript& script, un
return set_error(serror, SCRIPT_ERR_PUSH_SIZE);
// Note how OP_RESERVED does not count towards the opcode limit.
if (opcode > OP_16 && ++nOpCount > 201)
if (opcode > OP_16 && ++nOpCount > MAX_OPS_PER_SCRIPT)
return set_error(serror, SCRIPT_ERR_OP_COUNT);
if (opcode == OP_CAT ||
@@ -869,10 +869,10 @@ bool EvalScript(vector<vector<unsigned char> >& stack, const CScript& script, un
return set_error(serror, SCRIPT_ERR_INVALID_STACK_OPERATION);
int nKeysCount = CScriptNum(stacktop(-i), fRequireMinimal).getint();
if (nKeysCount < 0 || nKeysCount > 20)
if (nKeysCount < 0 || nKeysCount > MAX_PUBKEYS_PER_MULTISIG)
return set_error(serror, SCRIPT_ERR_PUBKEY_COUNT);
nOpCount += nKeysCount;
if (nOpCount > 201)
if (nOpCount > MAX_OPS_PER_SCRIPT)
return set_error(serror, SCRIPT_ERR_OP_COUNT);
int ikey = ++i;
i += nKeysCount;