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//------------------------------------------------------------------------------
/*
This file is part of rippled: https://github.com/ripple/rippled
Copyright (c) 2012-2014 Ripple Labs Inc.
Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
//==============================================================================
#include <ripple/app/main/Application.h>
#include <ripple/app/paths/RippleState.h>
#include <ripple/ledger/ReadView.h>
#include <ripple/net/RPCErr.h>
#include <ripple/protocol/ErrorCodes.h>
#include <ripple/protocol/JsonFields.h>
#include <ripple/resource/Fees.h>
#include <ripple/rpc/Context.h>
#include <ripple/rpc/impl/RPCHelpers.h>
#include <ripple/rpc/impl/Tuning.h>
namespace ripple {
struct VisitData
{
std::vector <RippleState::pointer> items;
AccountID const& accountID;
bool hasPeer;
AccountID const& raPeerAccount;
};
void addLine (Json::Value& jsonLines, RippleState const& line)
{
STAmount const& saBalance (line.getBalance ());
STAmount const& saLimit (line.getLimit ());
STAmount const& saLimitPeer (line.getLimitPeer ());
Json::Value& jPeer (jsonLines.append (Json::objectValue));
jPeer[jss::account] = to_string (line.getAccountIDPeer ());
// Amount reported is positive if current account holds other
// account's IOUs.
//
// Amount reported is negative if other account holds current
// account's IOUs.
jPeer[jss::balance] = saBalance.getText ();
jPeer[jss::currency] = to_string (saBalance.issue ().currency);
jPeer[jss::limit] = saLimit.getText ();
jPeer[jss::limit_peer] = saLimitPeer.getText ();
jPeer[jss::quality_in] = line.getQualityIn ().value;
jPeer[jss::quality_out] = line.getQualityOut ().value;
if (line.getAuth ())
jPeer[jss::authorized] = true;
if (line.getAuthPeer ())
jPeer[jss::peer_authorized] = true;
if (line.getNoRipple ())
jPeer[jss::no_ripple] = true;
if (line.getNoRipplePeer ())
jPeer[jss::no_ripple_peer] = true;
if (line.getFreeze ())
jPeer[jss::freeze] = true;
if (line.getFreezePeer ())
jPeer[jss::freeze_peer] = true;
}
// {
// account: <account>|<account_public_key>
// ledger_hash : <ledger>
// ledger_index : <ledger_index>
// limit: integer // optional
// marker: opaque // optional, resume previous query
// }
Json::Value doAccountLines (RPC::Context& context)
{
auto const& params (context.params);
if (! params.isMember (jss::account))
return RPC::missing_field_error (jss::account);
std::shared_ptr<ReadView const> ledger;
auto result = RPC::lookupLedger (ledger, context);
if (! ledger)
return result;
std::string strIdent (params[jss::account].asString ());
AccountID accountID;
if (auto jv = RPC::accountFromString (accountID, strIdent))
{
for (auto it = jv.begin (); it != jv.end (); ++it)
result[it.memberName ()] = *it;
return result;
}
if (! ledger->exists(keylet::account (accountID)))
return rpcError (rpcACT_NOT_FOUND);
std::string strPeer;
if (params.isMember (jss::peer))
strPeer = params[jss::peer].asString ();
auto hasPeer = ! strPeer.empty ();
AccountID raPeerAccount;
if (hasPeer)
{
if (auto jv = RPC::accountFromString (raPeerAccount, strPeer))
{
for (auto it = jv.begin (); it != jv.end (); ++it)
result[it.memberName ()] = *it;
return result;
}
}
unsigned int limit;
if (auto err = readLimitField(limit, RPC::Tuning::accountLines, context))
return *err;
Json::Value& jsonLines (result[jss::lines] = Json::arrayValue);
VisitData visitData = {{}, accountID, hasPeer, raPeerAccount};
unsigned int reserve (limit);
uint256 startAfter;
std::uint64_t startHint;
if (params.isMember (jss::marker))
{
// We have a start point. Use limit - 1 from the result and use the
// very last one for the resume.
Json::Value const& marker (params[jss::marker]);
if (! marker.isString ())
return RPC::expected_field_error (jss::marker, "string");
startAfter.SetHex (marker.asString ());
auto const sleLine = ledger->read({ltRIPPLE_STATE, startAfter});
if (! sleLine)
return rpcError (rpcINVALID_PARAMS);
if (sleLine->getFieldAmount (sfLowLimit).getIssuer () == accountID)
startHint = sleLine->getFieldU64 (sfLowNode);
else if (sleLine->getFieldAmount (sfHighLimit).getIssuer () == accountID)
startHint = sleLine->getFieldU64 (sfHighNode);
else
return rpcError (rpcINVALID_PARAMS);
// Caller provided the first line (startAfter), add it as first result
auto const line = RippleState::makeItem (accountID, sleLine);
if (line == nullptr)
return rpcError (rpcINVALID_PARAMS);
addLine (jsonLines, *line);
visitData.items.reserve (reserve);
}
else
{
startHint = 0;
// We have no start point, limit should be one higher than requested.
visitData.items.reserve (++reserve);
}
{
if (! forEachItemAfter(*ledger, accountID,
startAfter, startHint, reserve,
[&visitData](std::shared_ptr<SLE const> const& sleCur)
{
auto const line =
RippleState::makeItem (visitData.accountID, sleCur);
if (line != nullptr &&
(! visitData.hasPeer ||
visitData.raPeerAccount == line->getAccountIDPeer ()))
{
visitData.items.emplace_back (line);
return true;
}
return false;
}))
{
return rpcError (rpcINVALID_PARAMS);
}
}
if (visitData.items.size () == reserve)
{
result[jss::limit] = limit;
RippleState::pointer line (visitData.items.back ());
result[jss::marker] = to_string (line->key());
visitData.items.pop_back ();
}
result[jss::account] = context.app.accountIDCache().toBase58 (accountID);
for (auto const& item : visitData.items)
addLine (jsonLines, *item.get ());
context.loadType = Resource::feeMediumBurdenRPC;
return result;
}
} // ripple