CAmount ParsePaymentAmount(const std::string& strAmount)
{
CAmount nAmount = 0;
if (strAmount.empty()) {
std::ostringstream ostr;
ostr << "ParsePaymentAmount: Amount is empty";
throw std::runtime_error(ostr.str());
}
if (strAmount.size() > 20) {
// String is much too long, the functions below impose stricter
// requirements
std::ostringstream ostr;
ostr << "ParsePaymentAmount: Amount string too long";
throw std::runtime_error(ostr.str());
}
// Make sure the string makes sense as an amount
// Note: No spaces allowed
// Also note: No scientific notation
size_t pos = strAmount.find_first_not_of("0123456789.");
if (pos != std::string::npos) {
std::ostringstream ostr;
ostr << "ParsePaymentAmount: Amount string contains invalid character";
throw std::runtime_error(ostr.str());
}
pos = strAmount.find(".");
if (pos == 0) {
// JSON doesn't allow values to start with a decimal point
std::ostringstream ostr;
ostr << "ParsePaymentAmount: Invalid amount string, leading decimal point not allowed";
throw std::runtime_error(ostr.str());
}
// Make sure there's no more than 1 decimal point
if ((pos != std::string::npos) && (strAmount.find(".", pos + 1) != std::string::npos)) {
std::ostringstream ostr;
ostr << "ParsePaymentAmount: Invalid amount string, too many decimal points";
throw std::runtime_error(ostr.str());
}
// Note this code is taken from AmountFromValue in rpcserver.cpp
// which is used for parsing the amounts in createrawtransaction.
if (!ParseFixedPoint(strAmount, 8, &nAmount)) {
nAmount = 0;
std::ostringstream ostr;
ostr << "ParsePaymentAmount: ParseFixedPoint failed for string: " << strAmount;
throw std::runtime_error(ostr.str());
}
if (!MoneyRange(nAmount)) {
nAmount = 0;
std::ostringstream ostr;
ostr << "ParsePaymentAmount: Invalid amount string, value outside of valid money range";
throw std::runtime_error(ostr.str());
}
return nAmount;
}
CAmount AmountFromValue(const UniValue& value)
{
if (!value.isNum() && !value.isStr())
throw JSONRPCError(RPC_TYPE_ERROR, "Amount is not a number or string");
CAmount amount;
if (!ParseFixedPoint(value.getValStr(), 8, &amount))
throw JSONRPCError(RPC_TYPE_ERROR, "Invalid amount");
if (!MoneyRange(amount))
throw JSONRPCError(RPC_TYPE_ERROR, "Amount out of range");
return amount;
}
static CAmount AmountFromValue(const UniValue& value)
{
if (!value.isNum() && !value.isStr())
throw std::runtime_error("Amount is not a number or string");
CAmount amount;
if (!ParseFixedPoint(value.getValStr(), 8, &amount))
throw std::runtime_error("Invalid amount");
if (!MoneyRange(amount))
throw std::runtime_error("Amount out of range");
return amount;
}
