Differential D1222 Diff 3325 src/script/interpreter.cpp

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src/script/interpreter.cpp

Show First 20 Lines • Show All 289 Lines • ▼ Show 20 Lines	static bool CheckMinimalPush(const valtype &data, opcodetype opcode) {
}		}
return true;		return true;
}		}

static bool IsOpcodeDisabled(opcodetype opcode, uint32_t flags) {		static bool IsOpcodeDisabled(opcodetype opcode, uint32_t flags) {
switch (opcode) {		switch (opcode) {
case OP_CAT:		case OP_CAT:
case OP_SPLIT:		case OP_SPLIT:
case OP_NUM2BIN:
case OP_INVERT:		case OP_INVERT:
case OP_2MUL:		case OP_2MUL:
case OP_2DIV:		case OP_2DIV:
case OP_MUL:		case OP_MUL:
case OP_DIV:		case OP_DIV:
case OP_MOD:		case OP_MOD:
case OP_LSHIFT:		case OP_LSHIFT:
case OP_RSHIFT:		case OP_RSHIFT:
// Disabled opcodes.		// Disabled opcodes.
return true;		return true;

case OP_AND:		case OP_AND:
case OP_OR:		case OP_OR:
case OP_XOR:		case OP_XOR:
		case OP_NUM2BIN:
case OP_BIN2NUM:		case OP_BIN2NUM:
// Opcodes that have been reenabled.		// Opcodes that have been reenabled.
if ((flags & SCRIPT_ENABLE_MONOLITH_OPCODES) == 0) {		if ((flags & SCRIPT_ENABLE_MONOLITH_OPCODES) == 0) {
return true;		return true;
}		}

default:		default:
break;		break;
▲ Show 20 Lines • Show All 924 Lines • ▼ Show 20 Lines	try {
serror, SCRIPT_ERR_CHECKMULTISIGVERIFY);		serror, SCRIPT_ERR_CHECKMULTISIGVERIFY);
}		}
}		}
} break;		} break;

//		//
// Conversion operations		// Conversion operations
//		//
		case OP_NUM2BIN: {
		// (in size -- out)
		if (stack.size() < 2) {
		return set_error(
		serror, SCRIPT_ERR_INVALID_STACK_OPERATION);
		}

		uint64_t size =
		CScriptNum(stacktop(-1), fRequireMinimal).getint();
		if (size > MAX_SCRIPT_ELEMENT_SIZE) {
		return set_error(serror, SCRIPT_ERR_PUSH_SIZE);
		}

		popstack(stack);
		valtype &rawnum = stacktop(-1);

		// Try to see if we can fit that number in the number of
		// byte requested.
		CScriptNum::MinimallyEncode(rawnum);
		if (rawnum.size() > size) {
		// We definitively cannot.
		return set_error(serror,
		SCRIPT_ERR_IMPOSSIBLE_ENCODING);
		}

		// We already have an element of the right size, we
		// don't need to do anything.
		if (rawnum.size() == size) {
		break;
		}

		uint8_t signbit = 0x00;
		if (rawnum.size() > 0) {
		signbit = rawnum.back() & 0x80;
		rawnum[rawnum.size() - 1] &= 0x7f;
		}

		rawnum.reserve(size);
		while (rawnum.size() < size - 1) {
		rawnum.push_back(0x00);
		}

		rawnum.push_back(signbit);
		} break;

case OP_BIN2NUM: {		case OP_BIN2NUM: {
// (in -- out)		// (in -- out)
if (stack.size() < 1) {		if (stack.size() < 1) {
return set_error(		return set_error(
serror, SCRIPT_ERR_INVALID_STACK_OPERATION);		serror, SCRIPT_ERR_INVALID_STACK_OPERATION);
}		}

valtype &n = stacktop(-1);		valtype &n = stacktop(-1);
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