Files
clio/handlers/AccountCurrencies.cpp
2021-06-08 00:02:08 -04:00

91 lines
2.7 KiB
C++

#include <ripple/app/ledger/Ledger.h>
#include <ripple/basics/StringUtilities.h>
#include <ripple/protocol/ErrorCodes.h>
#include <ripple/protocol/Indexes.h>
#include <ripple/protocol/STLedgerEntry.h>
#include <ripple/protocol/jss.h>
#include <boost/json.hpp>
#include <algorithm>
#include <backend/BackendInterface.h>
#include <handlers/RPCHelpers.h>
boost::json::object
doAccountCurrencies(
boost::json::object const& request,
BackendInterface const& backend)
{
boost::json::object response;
auto ledgerSequence = ledgerSequenceFromRequest(request, backend);
if (!ledgerSequence)
{
response["error"] = "Empty database";
return response;
}
if (!request.contains("account"))
{
response["error"] = "Must contain account";
return response;
}
if (!request.at("account").is_string())
{
response["error"] = "Account must be a string";
return response;
}
ripple::AccountID accountID;
auto parsed = ripple::parseBase58<ripple::AccountID>(
request.at("account").as_string().c_str());
if (!parsed)
{
response["error"] = "Invalid account";
return response;
}
accountID = *parsed;
std::set<std::string> send, receive;
auto const addToResponse = [&](ripple::SLE const& sle) {
if (sle.getType() == ripple::ltRIPPLE_STATE)
{
ripple::STAmount const& balance =
sle.getFieldAmount(ripple::sfBalance);
auto lowLimit = sle.getFieldAmount(ripple::sfLowLimit);
auto highLimit = sle.getFieldAmount(ripple::sfHighLimit);
bool viewLowest = (lowLimit.getIssuer() == accountID);
auto lineLimit = viewLowest ? lowLimit : highLimit;
auto lineLimitPeer = !viewLowest ? lowLimit : highLimit;
if (balance < lineLimit)
receive.insert(ripple::to_string(balance.getCurrency()));
if ((-balance) < lineLimitPeer)
send.insert(ripple::to_string(balance.getCurrency()));
}
return true;
};
traverseOwnedNodes(
backend, accountID, *ledgerSequence, beast::zero, addToResponse);
response["send_currencies"] = boost::json::value(boost::json::array_kind);
boost::json::array& jsonSend = response.at("send_currencies").as_array();
for (auto const& currency : send)
jsonSend.push_back(currency.c_str());
response["receive_currencies"] =
boost::json::value(boost::json::array_kind);
boost::json::array& jsonReceive =
response.at("receive_currencies").as_array();
for (auto const& currency : receive)
jsonReceive.push_back(currency.c_str());
return response;
}