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Fix RPC book_offers handling of negative balances and self-issued IOUs.

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This commit is contained in:
Arthur Britto
2013-03-03 20:52:28 -08:00
parent de5e6439c3
commit da184a97c4
1 changed files with 100 additions and 81 deletions
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181
src/cpp/ripple/NetworkOPs.cpp
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@@ -1784,102 +1784,121 @@ void NetworkOPs::getBookPage(Ledger::pointer lpLedger, const uint160& uTakerPays
STAmount saDirRate;
// unsigned int iLeft = iLimit;
SLE::pointer sleGetsIssuer = lesActive.entryCache(ltACCOUNT_ROOT, Ledger::getAccountRootIndex(uTakerGetsIssuerID));
while (!bDone) {
if (bDirectAdvance) {
bDirectAdvance = false;
if (!sleGetsIssuer)
{
// Order book can not exist if TakerGetsIssuer account does not exist.
cLog(lsTRACE) << boost::str(boost::format("getBookPage: bDirectAdvance"));
nothing();
}
else
{
while (!bDone) {
if (bDirectAdvance) {
bDirectAdvance = false;
sleOfferDir = lesActive.entryCache(ltDIR_NODE, lpLedger->getNextLedgerIndex(uTipIndex, uBookEnd));
if (!sleOfferDir)
{
cLog(lsTRACE) << boost::str(boost::format("getBookPage: bDone"));
bDone = true;
}
else
{
uTipIndex = sleOfferDir->getIndex();
saDirRate = STAmount::setRate(Ledger::getQuality(uTipIndex));
SLE::pointer sleBookNode;
cLog(lsTRACE) << boost::str(boost::format("getBookPage: bDirectAdvance"));
lesActive.dirFirst(uTipIndex, sleBookNode, uBookEntry, uOfferIndex);
sleOfferDir = lesActive.entryCache(ltDIR_NODE, lpLedger->getNextLedgerIndex(uTipIndex, uBookEnd));
if (!sleOfferDir)
{
cLog(lsTRACE) << boost::str(boost::format("getBookPage: bDone"));
bDone = true;
}
else
{
uTipIndex = sleOfferDir->getIndex();
saDirRate = STAmount::setRate(Ledger::getQuality(uTipIndex));
SLE::pointer sleBookNode;
cLog(lsTRACE) << boost::str(boost::format("getBookPage: uTipIndex=%s") % uTipIndex);
cLog(lsTRACE) << boost::str(boost::format("getBookPage: uOfferIndex=%s") % uOfferIndex);
}
}
lesActive.dirFirst(uTipIndex, sleBookNode, uBookEntry, uOfferIndex);
if (!bDone)
{
SLE::pointer sleOffer = lesActive.entryCache(ltOFFER, uOfferIndex);
const uint160 uOfferOwnerID = sleOffer->getFieldAccount(sfAccount).getAccountID();
STAmount saOwnerFunds;
boost::unordered_map<uint160, STAmount>::const_iterator umBalanceEntry = umBalance.find(uOfferOwnerID);
if (umBalanceEntry == umBalance.end())
{
// Did not find balance in table.
STAmount saDefault(uTakerGetsCurrencyID, uTakerGetsIssuerID);
// cLog(lsINFO) << boost::str(boost::format("getBookPage: saDefault=%s") % saDefault.getFullText());
saOwnerFunds = lesActive.accountFunds(uOfferOwnerID, saDefault);
// cLog(lsINFO) << boost::str(boost::format("getBookPage: saOwnerFunds=%s (new)") % saOwnerFunds.getFullText());
}
else
{
saOwnerFunds = umBalanceEntry->second;
// cLog(lsINFO) << boost::str(boost::format("getBookPage: saOwnerFunds=%s (cached)") % saOwnerFunds.getFullText());
cLog(lsTRACE) << boost::str(boost::format("getBookPage: uTipIndex=%s") % uTipIndex);
cLog(lsTRACE) << boost::str(boost::format("getBookPage: uOfferIndex=%s") % uOfferIndex);
}
}
STAmount saTakerGets = sleOffer->getFieldAmount(sfTakerGets);
STAmount saTakerPays = sleOffer->getFieldAmount(sfTakerPays);
Json::Value jvOffer = sleOffer->getJson(0);
STAmount saTakerGetsFunded;
if (saOwnerFunds >= saTakerGets)
if (!bDone)
{
// Sufficient funds no shenanigans.
saTakerGetsFunded = saTakerGets;
}
else
{
// cLog(lsINFO) << boost::str(boost::format("getBookPage: saTakerGets=%s") % saTakerGets.getFullText());
// cLog(lsINFO) << boost::str(boost::format("getBookPage: saTakerPays=%s") % saTakerPays.getFullText());
// cLog(lsINFO) << boost::str(boost::format("getBookPage: saOwnerFunds=%s") % saOwnerFunds.getFullText());
// cLog(lsINFO) << boost::str(boost::format("getBookPage: saDirRate=%s") % saDirRate.getText());
// cLog(lsINFO) << boost::str(boost::format("getBookPage: multiply=%s") % STAmount::multiply(saTakerGetsFunded, saDirRate).getFullText());
// cLog(lsINFO) << boost::str(boost::format("getBookPage: multiply=%s") % STAmount::multiply(saTakerGetsFunded, saDirRate, saTakerPays).getFullText());
STAmount saTakerPaysFunded;
SLE::pointer sleOffer = lesActive.entryCache(ltOFFER, uOfferIndex);
const uint160 uOfferOwnerID = sleOffer->getFieldAccount(sfAccount).getAccountID();
STAmount saTakerGets = sleOffer->getFieldAmount(sfTakerGets);
STAmount saTakerPays = sleOffer->getFieldAmount(sfTakerPays);
STAmount saOwnerFunds;
saTakerGetsFunded = saOwnerFunds;
saTakerPaysFunded = std::min(saTakerPays, STAmount::multiply(saTakerGetsFunded, saDirRate, saTakerPays));
if (uTakerGetsIssuerID == uOfferOwnerID)
{
// If offer is selling issuer's own IOUs, it is fully funded.
saOwnerFunds = saTakerGets;
}
else
{
boost::unordered_map<uint160, STAmount>::const_iterator umBalanceEntry = umBalance.find(uOfferOwnerID);
// Only provide, if not fully funded.
jvOffer["taker_gets_funded"] = saTakerGetsFunded.getJson(0);
jvOffer["taker_pays_funded"] = saTakerPaysFunded.getJson(0);
}
if (umBalanceEntry != umBalance.end())
{
// Found in running balance table.
STAmount saOwnerBalance = saOwnerFunds-saTakerGetsFunded;
saOwnerFunds = umBalanceEntry->second;
// cLog(lsINFO) << boost::str(boost::format("getBookPage: saOwnerFunds=%s (cached)") % saOwnerFunds.getFullText());
}
else
{
// Did not find balance in table.
umBalance[uOfferOwnerID] = saOwnerBalance;
saOwnerFunds = lesActive.accountHolds(uOfferOwnerID, uTakerGetsCurrencyID, uTakerGetsIssuerID);
// cLog(lsINFO) << boost::str(boost::format("getBookPage: saOwnerFunds=%s (new)") % saOwnerFunds.getFullText());
if (saOwnerFunds.isNegative())
saOwnerFunds.zero();
}
}
if (!saOwnerFunds.isZero() || uOfferOwnerID == uTakerID)
{
// Only provide funded offers and offers of the taker.
jvOffers.append(jvOffer);
}
Json::Value jvOffer = sleOffer->getJson(0);
if (!lesActive.dirNext(uTipIndex, sleOfferDir, uBookEntry, uOfferIndex))
{
bDirectAdvance = true;
}
else
{
cLog(lsTRACE) << boost::str(boost::format("getBookPage: uOfferIndex=%s") % uOfferIndex);
STAmount saTakerGetsFunded;
if (saOwnerFunds >= saTakerGets)
{
// Sufficient funds no shenanigans.
saTakerGetsFunded = saTakerGets;
}
else
{
// cLog(lsINFO) << boost::str(boost::format("getBookPage: saTakerGets=%s") % saTakerGets.getFullText());
// cLog(lsINFO) << boost::str(boost::format("getBookPage: saTakerPays=%s") % saTakerPays.getFullText());
// cLog(lsINFO) << boost::str(boost::format("getBookPage: saOwnerFunds=%s") % saOwnerFunds.getFullText());
// cLog(lsINFO) << boost::str(boost::format("getBookPage: saDirRate=%s") % saDirRate.getText());
// cLog(lsINFO) << boost::str(boost::format("getBookPage: multiply=%s") % STAmount::multiply(saTakerGetsFunded, saDirRate).getFullText());
// cLog(lsINFO) << boost::str(boost::format("getBookPage: multiply=%s") % STAmount::multiply(saTakerGetsFunded, saDirRate, saTakerPays).getFullText());
STAmount saTakerPaysFunded;
saTakerGetsFunded = saOwnerFunds;
saTakerPaysFunded = std::min(saTakerPays, STAmount::multiply(saTakerGetsFunded, saDirRate, saTakerPays));
// Only provide, if not fully funded.
jvOffer["taker_gets_funded"] = saTakerGetsFunded.getJson(0);
jvOffer["taker_pays_funded"] = saTakerPaysFunded.getJson(0);
}
STAmount saOwnerBalance = saOwnerFunds-saTakerGetsFunded;
umBalance[uOfferOwnerID] = saOwnerBalance;
if (!saOwnerFunds.isZero() || uOfferOwnerID == uTakerID)
{
// Only provide funded offers and offers of the taker.
jvOffers.append(jvOffer);
}
if (!lesActive.dirNext(uTipIndex, sleOfferDir, uBookEntry, uOfferIndex))
{
bDirectAdvance = true;
}
else
{
cLog(lsTRACE) << boost::str(boost::format("getBookPage: uOfferIndex=%s") % uOfferIndex);
}
}
}
}