static
std::uint32_t
rippleQuality (
LedgerEntrySet& ledger,
AccountID const& destination,
AccountID const& source,
Currency const& currency,
SField const& sfLow,
SField const& sfHigh)
{
std::uint32_t uQuality (QUALITY_ONE);
if (destination != source)
{
SLE::pointer sleRippleState (ledger.entryCache (ltRIPPLE_STATE,
getRippleStateIndex (destination, source, currency)));
// we should be able to assert(sleRippleState) here
if (sleRippleState)
{
auto const& sfField = destination < source ? sfLow : sfHigh;
uQuality = sleRippleState->isFieldPresent (sfField)
? sleRippleState->getFieldU32 (sfField)
: QUALITY_ONE;
if (!uQuality)
uQuality = 1; // Avoid divide by zero.
}
}
return uQuality;
}
TER ChangeTransactor::applyFeature ()
{
uint256 feature = mTxn.getFieldH256 (sfFeature);
SLE::pointer featureObject = mEngine->entryCache (ltFEATURES, Ledger::getLedgerFeatureIndex ());
if (!featureObject)
featureObject = mEngine->entryCreate (ltFEATURES, Ledger::getLedgerFeatureIndex ());
STVector256 features = featureObject->getFieldV256 (sfFeatures);
if (features.hasValue (feature))
return tefALREADY;
features.addValue (feature);
featureObject->setFieldV256 (sfFeatures, features);
mEngine->entryModify (featureObject);
getApp().getFeatureTable ().enableFeature (feature);
if (!getApp().getFeatureTable ().isFeatureSupported (feature))
getApp().getOPs ().setFeatureBlocked ();
return tesSUCCESS;
}
/** Check if a sequence of three accounts violates the no ripple constrains
[first] -> [second] -> [third]
Disallowed if 'second' set no ripple on [first]->[second] and
[second]->[third]
*/
TER PathState::checkNoRipple (
AccountID const& firstAccount,
AccountID const& secondAccount,
// This is the account whose constraints we are checking
AccountID const& thirdAccount,
Currency const& currency)
{
// fetch the ripple lines into and out of this node
SLE::pointer sleIn = view().peek (
keylet::line(firstAccount, secondAccount, currency));
SLE::pointer sleOut = view().peek (
keylet::line(secondAccount, thirdAccount, currency));
if (!sleIn || !sleOut)
{
terStatus = terNO_LINE;
}
else if (
sleIn->getFieldU32 (sfFlags) &
((secondAccount > firstAccount) ? lsfHighNoRipple : lsfLowNoRipple) &&
sleOut->getFieldU32 (sfFlags) &
((secondAccount > thirdAccount) ? lsfHighNoRipple : lsfLowNoRipple))
{
JLOG (j_.info)
<< "Path violates noRipple constraint between "
<< firstAccount << ", "
<< secondAccount << " and "
<< thirdAccount;
terStatus = terNO_RIPPLE;
}
return terStatus;
}
// Look up the master public generator for a regular seed so we may index source accounts ids.
// --> naRegularSeed
// <-- naMasterGenerator
Json::Value getMasterGenerator (
Ledger::ref lrLedger, const RippleAddress& naRegularSeed,
RippleAddress& naMasterGenerator, NetworkOPs& netOps)
{
RippleAddress na0Public; // To find the generator's index.
RippleAddress na0Private; // To decrypt the master generator's cipher.
RippleAddress naGenerator = RippleAddress::createGeneratorPublic (naRegularSeed);
na0Public.setAccountPublic (naGenerator, 0);
na0Private.setAccountPrivate (naGenerator, naRegularSeed, 0);
SLE::pointer sleGen = netOps.getGenerator (lrLedger, na0Public.getAccountID ());
if (!sleGen)
{
// No account has been claimed or has had it password set for seed.
return rpcError (rpcNO_ACCOUNT);
}
Blob vucCipher = sleGen->getFieldVL (sfGenerator);
Blob vucMasterGenerator = na0Private.accountPrivateDecrypt (na0Public, vucCipher);
if (vucMasterGenerator.empty ())
{
return rpcError (rpcFAIL_GEN_DECRYPT);
}
naMasterGenerator.setGenerator (vucMasterGenerator);
return Json::Value (Json::objectValue);
}
TER
SetSignerList::removeSignersFromLedger (Keylet const& accountKeylet,
Keylet const& ownerDirKeylet, Keylet const& signerListKeylet)
{
// We have to examine the current SignerList so we know how much to
// reduce the OwnerCount.
SLE::pointer signers = view().peek (signerListKeylet);
// If the signer list doesn't exist we've already succeeded in deleting it.
if (!signers)
return tesSUCCESS;
STArray const& actualList = signers->getFieldArray (sfSignerEntries);
int const removeFromOwnerCount = ownerCountDelta (actualList.size()) * -1;
// Remove the node from the account directory.
auto const hint = (*signers)[sfOwnerNode];
auto viewJ = ctx_.app.journal ("View");
TER const result = dirDelete(ctx_.view(), false, hint,
ownerDirKeylet.key, signerListKeylet.key, false, (hint == 0), viewJ);
if (result == tesSUCCESS)
adjustOwnerCount(view(),
view().peek(accountKeylet), removeFromOwnerCount, viewJ);
ctx_.view().erase (signers);
return result;
}
TER Change::applyAmendment ()
{
uint256 amendment (mTxn.getFieldH256 (sfAmendment));
SLE::pointer amendmentObject (mEngine->entryCache (
ltAMENDMENTS, Ledger::getLedgerAmendmentIndex ()));
if (!amendmentObject)
{
amendmentObject = mEngine->entryCreate(
ltAMENDMENTS, Ledger::getLedgerAmendmentIndex());
}
STVector256 amendments (amendmentObject->getFieldV256 (sfAmendments));
if (amendments.hasValue (amendment))
return tefALREADY;
amendments.addValue (amendment);
amendmentObject->setFieldV256 (sfAmendments, amendments);
mEngine->entryModify (amendmentObject);
getApp().getAmendmentTable ().enable (amendment);
if (!getApp().getAmendmentTable ().isSupported (amendment))
getApp().getOPs ().setAmendmentBlocked ();
return tesSUCCESS;
}
/** Check if a sequence of three accounts violates the no ripple constrains
[first] -> [second] -> [third]
Disallowed if 'second' set no ripple on [first]->[second] and [second]->[third]
*/
void PathState::checkNoRipple (
uint160 const& firstAccount,
uint160 const& secondAccount, // This is the account whose constraints we are checking
uint160 const& thirdAccount,
uint160 const& currency)
{
// fetch the ripple lines into and out of this node
SLE::pointer sleIn = lesEntries.entryCache (ltRIPPLE_STATE,
Ledger::getRippleStateIndex (firstAccount, secondAccount, currency));
SLE::pointer sleOut = lesEntries.entryCache (ltRIPPLE_STATE,
Ledger::getRippleStateIndex (secondAccount, thirdAccount, currency));
if (!sleIn || !sleOut)
{
terStatus = terNO_LINE;
}
else if (
is_bit_set (sleIn->getFieldU32 (sfFlags),
(secondAccount > firstAccount) ? lsfHighNoRipple : lsfLowNoRipple) &&
is_bit_set (sleOut->getFieldU32 (sfFlags),
(secondAccount > thirdAccount) ? lsfHighNoRipple : lsfLowNoRipple))
{
WriteLog (lsINFO, RippleCalc) << "Path violates noRipple constraint between " <<
RippleAddress::createHumanAccountID (firstAccount) << ", " <<
RippleAddress::createHumanAccountID (secondAccount) << " and " <<
RippleAddress::createHumanAccountID (thirdAccount);
terStatus = terNO_RIPPLE;
}
}
/** Check if an expanded path violates freeze rules */
void PathState::checkFreeze()
{
assert (nodes_.size() >= 2);
// A path with no intermediaries -- pure issue/redeem
// cannot be frozen.
if (nodes_.size() == 2)
return;
SLE::pointer sle;
for (std::size_t i = 0; i < (nodes_.size() - 1); ++i)
{
// Check each order book for a global freeze
if (nodes_[i].uFlags & STPathElement::typeIssuer)
{
sle = view().peek (keylet::account(nodes_[i].issue_.account));
if (sle && sle->isFlag (lsfGlobalFreeze))
{
terStatus = terNO_LINE;
return;
}
}
// Check each account change to make sure funds can leave
if (nodes_[i].uFlags & STPathElement::typeAccount)
{
Currency const& currencyID = nodes_[i].issue_.currency;
AccountID const& inAccount = nodes_[i].account_;
AccountID const& outAccount = nodes_[i+1].account_;
if (inAccount != outAccount)
{
sle = view().peek (keylet::account(outAccount));
if (sle && sle->isFlag (lsfGlobalFreeze))
{
terStatus = terNO_LINE;
return;
}
sle = view().peek (keylet::line(inAccount,
outAccount, currencyID));
if (sle && sle->isFlag (
(outAccount > inAccount) ? lsfHighFreeze : lsfLowFreeze))
{
terStatus = terNO_LINE;
return;
}
}
}
}
}
ter
createoffer::checkacceptasset(issueref issue) const
{
/* only valid for custom currencies */
assert (!isxrp (issue.currency));
assert (!isvbc (issue.currency));
sle::pointer const issueraccount = mengine->entrycache (
ltaccount_root, getaccountrootindex (issue.account));
if (!issueraccount)
{
if (m_journal.warning) m_journal.warning <<
"delay: can't receive ious from non-existent issuer: " <<
to_string (issue.account);
return (mparams & tapretry)
? terno_account
: tecno_issuer;
}
if (issueraccount->getfieldu32 (sfflags) & lsfrequireauth)
{
sle::pointer const trustline (mengine->entrycache (
ltripple_state, getripplestateindex (
mtxnaccountid, issue.account, issue.currency)));
if (!trustline)
{
return (mparams & tapretry)
? terno_line
: tecno_line;
}
// entries have a canonical representation, determined by a
// lexicographical "greater than" comparison employing strict weak
// ordering. determine which entry we need to access.
bool const canonical_gt (mtxnaccountid > issue.account);
bool const is_authorized (trustline->getfieldu32 (sfflags) &
(canonical_gt ? lsflowauth : lsfhighauth));
if (!is_authorized)
{
if (m_journal.debug) m_journal.debug <<
"delay: can't receive ious from issuer without auth.";
return (mparams & tapretry)
? terno_auth
: tecno_auth;
}
}
return tessuccess;
}
TER
CreateOffer::checkAcceptAsset(IssueRef issue) const
{
/* Only valid for custom currencies */
assert (!isXRP (issue.currency));
SLE::pointer const issuerAccount = mEngine->entryCache (
ltACCOUNT_ROOT, Ledger::getAccountRootIndex (issue.account));
if (!issuerAccount)
{
if (m_journal.warning) m_journal.warning <<
"delay: can't receive IOUs from non-existent issuer: " <<
to_string (issue.account);
return (mParams & tapRETRY)
? terNO_ACCOUNT
: tecNO_ISSUER;
}
if (issuerAccount->getFieldU32 (sfFlags) & lsfRequireAuth)
{
SLE::pointer const trustLine (mEngine->entryCache (
ltRIPPLE_STATE, Ledger::getRippleStateIndex (
mTxnAccountID, issue.account, issue.currency)));
if (!trustLine)
{
return (mParams & tapRETRY)
? terNO_LINE
: tecNO_LINE;
}
// Entries have a canonical representation, determined by a
// lexicographical "greater than" comparison employing strict weak
// ordering. Determine which entry we need to access.
bool const canonical_gt (mTxnAccountID > issue.account);
bool const is_authorized (trustLine->getFieldU32 (sfFlags) &
(canonical_gt ? lsfLowAuth : lsfHighAuth));
if (!is_authorized)
{
if (m_journal.debug) m_journal.debug <<
"delay: can't receive IOUs from issuer without auth.";
return (mParams & tapRETRY)
? terNO_AUTH
: tecNO_AUTH;
}
}
return tesSUCCESS;
}
void AccountItems::fillItems (const uint160& accountID, Ledger::ref ledger)
{
uint256 const rootIndex = Ledger::getOwnerDirIndex (accountID);
uint256 currentIndex = rootIndex;
// VFALCO TODO Rewrite all infinite loops to have clear terminating
// conditions defined in one location.
//
while (1)
{
SLE::pointer ownerDir = ledger->getDirNode (currentIndex);
// VFALCO TODO Rewrite to not return from the middle of the function
if (!ownerDir)
return;
BOOST_FOREACH (uint256 const & uNode, ownerDir->getFieldV256 (sfIndexes).peekValue ())
{
// VFALCO TODO rename getSLEi() to something legible.
SLE::pointer sleCur = ledger->getSLEi (uNode);
if (!sleCur)
{
// item in directory not in ledger
}
else
{
AccountItem::pointer item = mOfType->makeItem (accountID, sleCur);
// VFALCO NOTE Under what conditions would makeItem() return nullptr?
// DJS NOTE If the item wasn't one this particular AccountItems was interested in
// (For example, if the owner is only interested in ripple lines and this is an offer)
if (item)
{
mItems.push_back (item);
}
}
}
std::uint64_t uNodeNext = ownerDir->getFieldU64 (sfIndexNext);
// VFALCO TODO Rewrite to not return from the middle of the function
if (!uNodeNext)
return;
currentIndex = Ledger::getDirNodeIndex (rootIndex, uNodeNext);
}
}
TER
SetSignerList::destroySignerList ()
{
auto const accountKeylet = keylet::account (account_);
// Destroying the signer list is only allowed if either the master key
// is enabled or there is a regular key.
SLE::pointer ledgerEntry = view().peek (accountKeylet);
if ((ledgerEntry->isFlag (lsfDisableMaster)) &&
(!ledgerEntry->isFieldPresent (sfRegularKey)))
return tecNO_ALTERNATIVE_KEY;
auto const ownerDirKeylet = keylet::ownerDir (account_);
auto const signerListKeylet = keylet::signers (account_);
return removeSignersFromLedger(
accountKeylet, ownerDirKeylet, signerListKeylet);
}
TER Change::applyFee ()
{
SLE::pointer feeObject = mEngine->entryCache (
ltFEE_SETTINGS, Ledger::getLedgerFeeIndex ());
if (!feeObject)
feeObject = mEngine->entryCreate (
ltFEE_SETTINGS, Ledger::getLedgerFeeIndex ());
m_journal.trace <<
"Previous fee object: " << feeObject->getJson (0);
feeObject->setFieldU64 (
sfBaseFee, mTxn.getFieldU64 (sfBaseFee));
feeObject->setFieldU32 (
sfReferenceFeeUnits, mTxn.getFieldU32 (sfReferenceFeeUnits));
feeObject->setFieldU32 (
sfReserveBase, mTxn.getFieldU32 (sfReserveBase));
feeObject->setFieldU32 (
sfReserveIncrement, mTxn.getFieldU32 (sfReserveIncrement));
mEngine->entryModify (feeObject);
m_journal.trace <<
"New fee object: " << feeObject->getJson (0);
m_journal.warning << "Fees have been changed";
return tesSUCCESS;
}
void AccountItems::fillItems (Account const& accountID, Ledger::ref ledger)
{
uint256 const rootIndex = Ledger::getOwnerDirIndex (accountID);
uint256 currentIndex = rootIndex;
// VFALCO TODO Rewrite all infinite loops to have clear terminating
// conditions defined in one location.
//
while (1)
{
SLE::pointer ownerDir = ledger->getDirNode (currentIndex);
// VFALCO TODO Rewrite to not return from the middle of the function
if (!ownerDir)
return;
for (auto const& uNode: ownerDir->getFieldV256 (sfIndexes).peekValue ())
{
// VFALCO TODO rename getSLEi() to something legible.
SLE::pointer sleCur = ledger->getSLEi (uNode);
if (sleCur)
{
// The item in the directory is in ledger
auto item = mOfType->makeItem (accountID, sleCur);
// makeItem() returns nullptr if the item wasn't one this
// particular AccountItems was interested in - for example, if
// the owner is only interested in ripple lines and this is an
// offer.
if (item)
mItems.push_back (item);
}
}
std::uint64_t uNodeNext = ownerDir->getFieldU64 (sfIndexNext);
if (!uNodeNext)
return;
currentIndex = Ledger::getDirNodeIndex (rootIndex, uNodeNext);
}
}
/** Check if an expanded path violates freeze rules */
void PathState::checkFreeze()
{
assert(vpnNodes.size() >= 2);
// A path with no intermediaries -- pure issue/redeem
// cannot be frozen.
if(vpnNodes.size() == 2)
return;
for(std::size_t i = 0; i < (vpnNodes.size() - 1); ++i)
{
// Check each account change to make sure funds can leave
if(vpnNodes[i].uFlags & STPathElement::typeAccount)
{
uint160 const& currencyID = vpnNodes[i].uCurrencyID;
uint160 const& inAccount = vpnNodes[i].uAccountID;
uint160 const& issuingAccount = vpnNodes[i+1].uAccountID;
if(inAccount != issuingAccount)
{
SLE::pointer sle = lesEntries.entryCache(ltACCOUNT_ROOT,
Ledger::getAccountRootIndex(issuingAccount));
if(sle && sle->isFlag(lsfRequireAuth))
{
sle = lesEntries.entryCache(ltRIPPLE_STATE,
Ledger::getRippleStateIndex(inAccount,
issuingAccount, currencyID));
if(sle && !sle->isFlag(
(issuingAccount > inAccount) ? lsfHighAuth : lsfLowAuth))
{
terStatus = terNO_LINE;
return;
}
}
}
}
}
}
void
SetSignerList::writeSignersToSLE (SLE::pointer const& ledgerEntry) const
{
// Assign the quorum.
ledgerEntry->setFieldU32 (sfSignerQuorum, quorum_);
// For now, assign the default SignerListID.
ledgerEntry->setFieldU32 (sfSignerListID, defaultSignerListID_);
// Create the SignerListArray one SignerEntry at a time.
STArray toLedger (signers_.size ());
for (auto const& entry : signers_)
{
toLedger.emplace_back(sfSignerEntry);
STObject& obj = toLedger.back();
obj.reserve (2);
obj.setAccountID (sfAccount, entry.account);
obj.setFieldU16 (sfSignerWeight, entry.weight);
}
// Assign the SignerEntries.
ledgerEntry->setFieldArray (sfSignerEntries, toLedger);
}
TER
CancelTicket::doApply ()
{
uint256 const ticketId = ctx_.tx.getFieldH256 (sfTicketID);
// VFALCO This is highly suspicious, we're requiring that the
// transaction provide the return value of getTicketIndex?
SLE::pointer sleTicket = view().peek (keylet::ticket(ticketId));
if (!sleTicket)
return tecNO_ENTRY;
auto const ticket_owner =
sleTicket->getAccountID (sfAccount);
bool authorized =
account_ == ticket_owner;
// The target can also always remove a ticket
if (!authorized && sleTicket->isFieldPresent (sfTarget))
authorized = (account_ == sleTicket->getAccountID (sfTarget));
// And finally, anyone can remove an expired ticket
if (!authorized && sleTicket->isFieldPresent (sfExpiration))
{
using tp = NetClock::time_point;
using d = tp::duration;
auto const expiration = tp{d{sleTicket->getFieldU32(sfExpiration)}};
if (view().parentCloseTime() >= expiration)
authorized = true;
}
if (!authorized)
return tecNO_PERMISSION;
std::uint64_t const hint (sleTicket->getFieldU64 (sfOwnerNode));
if (! ctx_.view().dirRemove(
keylet::ownerDir(ticket_owner), hint, ticketId, false))
{
return tefBAD_LEDGER;
}
auto viewJ = ctx_.app.journal ("View");
adjustOwnerCount(view(), view().peek(
keylet::account(ticket_owner)), -1, viewJ);
ctx_.view ().erase (sleTicket);
return tesSUCCESS;
}
LedgerEntry::pointer LedgerEntry::makeEntry(SLE::pointer sle)
{
switch (sle->getType())
{
case ltACCOUNT_ROOT:
return LedgerEntry::pointer(new AccountEntry(sle));
case ltRIPPLE_STATE:
return LedgerEntry::pointer(new TrustLine(sle));
case ltOFFER:
return LedgerEntry::pointer(new OfferEntry(sle));
case ltOWNERSHIP:
return LedgerEntry::pointer(new Ownership(sle));
case ltOBJECT_DESC:
return LedgerEntry::pointer(new ObjectInfo(sle));
}
return(LedgerEntry::pointer());
}
TER doApply () override
{
assert (mTxnAccount);
uint256 const ticketId = mTxn.getFieldH256 (sfTicketID);
SLE::pointer sleTicket = mEngine->view ().entryCache (ltTICKET, ticketId);
if (!sleTicket)
return tecNO_ENTRY;
Account const ticket_owner (sleTicket->getFieldAccount160 (sfAccount));
bool authorized (mTxnAccountID == ticket_owner);
// The target can also always remove a ticket
if (!authorized && sleTicket->isFieldPresent (sfTarget))
authorized = (mTxnAccountID == sleTicket->getFieldAccount160 (sfTarget));
// And finally, anyone can remove an expired ticket
if (!authorized && sleTicket->isFieldPresent (sfExpiration))
{
std::uint32_t const expiration = sleTicket->getFieldU32 (sfExpiration);
if (mEngine->getLedger ()->getParentCloseTimeNC () >= expiration)
authorized = true;
}
if (!authorized)
return tecNO_PERMISSION;
std::uint64_t const hint (sleTicket->getFieldU64 (sfOwnerNode));
TER const result = mEngine->view ().dirDelete (false, hint,
getOwnerDirIndex (ticket_owner), ticketId, false, (hint == 0));
mEngine->view ().decrementOwnerCount (mTxnAccount);
mEngine->view ().entryDelete (sleTicket);
return result;
}
TER
CreateOffer::doApply ()
{
if (m_journal.debug) m_journal.debug <<
"OfferCreate> " << mTxn.getJson (0);
std::uint32_t const uTxFlags = mTxn.getFlags ();
bool const bPassive (uTxFlags & tfPassive);
bool const bImmediateOrCancel (uTxFlags & tfImmediateOrCancel);
bool const bFillOrKill (uTxFlags & tfFillOrKill);
bool const bSell (uTxFlags & tfSell);
STAmount saTakerPays = mTxn.getFieldAmount (sfTakerPays);
STAmount saTakerGets = mTxn.getFieldAmount (sfTakerGets);
if (!saTakerPays.isLegalNet () || !saTakerGets.isLegalNet ())
return temBAD_AMOUNT;
auto const& uPaysIssuerID = saTakerPays.getIssuer ();
auto const& uPaysCurrency = saTakerPays.getCurrency ();
auto const& uGetsIssuerID = saTakerGets.getIssuer ();
auto const& uGetsCurrency = saTakerGets.getCurrency ();
bool const bHaveExpiration (mTxn.isFieldPresent (sfExpiration));
bool const bHaveCancel (mTxn.isFieldPresent (sfOfferSequence));
std::uint32_t const uExpiration = mTxn.getFieldU32 (sfExpiration);
std::uint32_t const uCancelSequence = mTxn.getFieldU32 (sfOfferSequence);
// FIXME understand why we use SequenceNext instead of current transaction
// sequence to determine the transaction. Why is the offer seuqnce
// number insufficient?
std::uint32_t const uAccountSequenceNext = mTxnAccount->getFieldU32 (sfSequence);
std::uint32_t const uSequence = mTxn.getSequence ();
const uint256 uLedgerIndex = Ledger::getOfferIndex (mTxnAccountID, uSequence);
if (m_journal.debug)
{
m_journal.debug <<
"Creating offer node: " << to_string (uLedgerIndex) <<
" uSequence=" << uSequence;
if (bImmediateOrCancel)
m_journal.debug << "Transaction: IoC set.";
if (bFillOrKill)
m_journal.debug << "Transaction: FoK set.";
}
// This is the original rate of this offer, and is the rate at which it will
// be placed, even if crossing offers change the amounts.
std::uint64_t const uRate = STAmount::getRate (saTakerGets, saTakerPays);
TER terResult (tesSUCCESS);
// This is the ledger view that we work against. Transactions are applied
// as we go on processing transactions.
core::LedgerView& view (mEngine->view ());
// This is a checkpoint with just the fees paid. If something goes wrong
// with this transaction, we roll back to this ledger.
core::LedgerView view_checkpoint (view);
view.bumpSeq (); // Begin ledger variance.
SLE::pointer sleCreator = mEngine->entryCache (
ltACCOUNT_ROOT, Ledger::getAccountRootIndex (mTxnAccountID));
if (uTxFlags & tfOfferCreateMask)
{
if (m_journal.debug) m_journal.debug <<
"Malformed transaction: Invalid flags set.";
terResult = temINVALID_FLAG;
}
else if (bImmediateOrCancel && bFillOrKill)
{
if (m_journal.debug) m_journal.debug <<
"Malformed transaction: both IoC and FoK set.";
terResult = temINVALID_FLAG;
}
else if (bHaveExpiration && !uExpiration)
{
m_journal.warning <<
"Malformed offer: bad expiration";
terResult = temBAD_EXPIRATION;
}
else if (saTakerPays.isNative () && saTakerGets.isNative ())
{
m_journal.warning <<
"Malformed offer: XRP for XRP";
terResult = temBAD_OFFER;
}
else if (saTakerPays <= zero || saTakerGets <= zero)
{
m_journal.warning <<
"Malformed offer: bad amount";
terResult = temBAD_OFFER;
}
else if (uPaysCurrency == uGetsCurrency && uPaysIssuerID == uGetsIssuerID)
{
m_journal.warning <<
"Malformed offer: redundant offer";
terResult = temREDUNDANT;
}
// We don't allow a non-native currency to use the currency code XRP.
else if (badCurrency() == uPaysCurrency || badCurrency() == uGetsCurrency)
{
m_journal.warning <<
"Malformed offer: Bad currency.";
terResult = temBAD_CURRENCY;
}
else if (saTakerPays.isNative () != !uPaysIssuerID ||
saTakerGets.isNative () != !uGetsIssuerID)
{
m_journal.warning <<
"Malformed offer: bad issuer";
terResult = temBAD_ISSUER;
}
else if (view.isGlobalFrozen (uPaysIssuerID) || view.isGlobalFrozen (uGetsIssuerID))
{
m_journal.warning <<
"Offer involves frozen asset";
terResult = tecFROZEN;
}
else if (view.accountFunds (
mTxnAccountID, saTakerGets, fhZERO_IF_FROZEN) <= zero)
{
m_journal.warning <<
"delay: Offers must be at least partially funded.";
terResult = tecUNFUNDED_OFFER;
}
// This can probably be simplified to make sure that you cancel sequences
// before the transaction sequence number.
else if (bHaveCancel && (!uCancelSequence || uAccountSequenceNext - 1 <= uCancelSequence))
{
if (m_journal.debug) m_journal.debug <<
"uAccountSequenceNext=" << uAccountSequenceNext <<
" uOfferSequence=" << uCancelSequence;
terResult = temBAD_SEQUENCE;
}
if (terResult != tesSUCCESS)
{
if (m_journal.debug) m_journal.debug <<
"final terResult=" << transToken (terResult);
return terResult;
}
// Process a cancellation request that's passed along with an offer.
if ((terResult == tesSUCCESS) && bHaveCancel)
{
uint256 const uCancelIndex (
Ledger::getOfferIndex (mTxnAccountID, uCancelSequence));
SLE::pointer sleCancel = mEngine->entryCache (ltOFFER, uCancelIndex);
// It's not an error to not find the offer to cancel: it might have
// been consumed or removed as we are processing.
if (sleCancel)
{
m_journal.warning <<
"Cancelling order with sequence " << uCancelSequence;
terResult = view.offerDelete (sleCancel);
}
}
// Expiration is defined in terms of the close time of the parent ledger,
// because we definitively know the time that it closed but we do not
// know the closing time of the ledger that is under construction.
if (bHaveExpiration &&
(mEngine->getLedger ()->getParentCloseTimeNC () >= uExpiration))
{
return tesSUCCESS;
}
// Make sure that we are authorized to hold what the taker will pay us.
if (terResult == tesSUCCESS && !saTakerPays.isNative ())
terResult = checkAcceptAsset (Issue (uPaysCurrency, uPaysIssuerID));
bool crossed = false;
bool const bOpenLedger (mParams & tapOPEN_LEDGER);
if (terResult == tesSUCCESS)
{
// We reverse gets and pays because during offer crossing we are taking.
core::Amounts const taker_amount (saTakerGets, saTakerPays);
// The amount of the offer that we will need to place, after we finish
// offer crossing processing. It may be equal to the original amount,
// empty (fully crossed), or something in-between.
core::Amounts place_offer;
std::tie(terResult, place_offer) = crossOffers (view, taker_amount);
if (terResult == tecFAILED_PROCESSING && bOpenLedger)
terResult = telFAILED_PROCESSING;
if (terResult == tesSUCCESS)
{
// We now need to reduce the offer by the cross flow. We reverse
// in and out here, since during crossing we were takers.
assert (saTakerPays.getCurrency () == place_offer.out.getCurrency ());
assert (saTakerPays.getIssuer () == place_offer.out.getIssuer ());
assert (saTakerGets.getCurrency () == place_offer.in.getCurrency ());
assert (saTakerGets.getIssuer () == place_offer.in.getIssuer ());
if (taker_amount != place_offer)
crossed = true;
if (m_journal.debug)
{
m_journal.debug << "Offer Crossing: " << transToken (terResult);
if (terResult == tesSUCCESS)
{
m_journal.debug <<
" takerPays: " << saTakerPays.getFullText () <<
" -> " << place_offer.out.getFullText ();
m_journal.debug <<
" takerGets: " << saTakerGets.getFullText () <<
" -> " << place_offer.in.getFullText ();
}
}
saTakerPays = place_offer.out;
saTakerGets = place_offer.in;
}
}
if (terResult != tesSUCCESS)
{
m_journal.debug <<
"final terResult=" << transToken (terResult);
return terResult;
}
if (m_journal.debug)
{
m_journal.debug <<
"takeOffers: saTakerPays=" <<saTakerPays.getFullText ();
m_journal.debug <<
"takeOffers: saTakerGets=" << saTakerGets.getFullText ();
m_journal.debug <<
"takeOffers: mTxnAccountID=" <<
to_string (mTxnAccountID);
m_journal.debug <<
"takeOffers: FUNDS=" << view.accountFunds (
mTxnAccountID, saTakerGets, fhZERO_IF_FROZEN).getFullText ();
}
if (saTakerPays < zero || saTakerGets < zero)
{
// Earlier, we verified that the amounts, as specified in the offer,
// were not negative. That they are now suggests that something went
// very wrong with offer crossing.
m_journal.fatal << (crossed ? "Partially consumed" : "Full") <<
" offer has negative component:" <<
" pays=" << saTakerPays.getFullText () <<
" gets=" << saTakerGets.getFullText ();
assert (saTakerPays >= zero);
assert (saTakerGets >= zero);
return tefINTERNAL;
}
if (bFillOrKill && (saTakerPays != zero || saTakerGets != zero))
{
// Fill or kill and have leftovers.
view.swapWith (view_checkpoint); // Restore with just fees paid.
return tesSUCCESS;
}
// What the reserve would be if this offer was placed.
auto const accountReserve (mEngine->getLedger ()->getReserve (
sleCreator->getFieldU32 (sfOwnerCount) + 1));
if (saTakerPays == zero || // Wants nothing more.
saTakerGets == zero || // Offering nothing more.
bImmediateOrCancel) // Do not persist.
{
// Complete as is.
}
else if (mPriorBalance.getNValue () < accountReserve)
{
// If we are here, the signing account had an insufficient reserve
// *prior* to our processing. We use the prior balance to simplify
// client writing and make the user experience better.
if (bOpenLedger) // Ledger is not final, can vote no.
{
// Hope for more reserve to come in or more offers to consume. If we
// specified a local error this transaction will not be retried, so
// specify a tec to distribute the transaction and allow it to be
// retried. In particular, it may have been successful to a
// degree (partially filled) and if it hasn't, it might succeed.
terResult = tecINSUF_RESERVE_OFFER;
}
else if (!crossed)
{
// Ledger is final, insufficent reserve to create offer, processed
// nothing.
terResult = tecINSUF_RESERVE_OFFER;
}
else
{
// Ledger is final, insufficent reserve to create offer, processed
// something.
// Consider the offer unfunded. Treat as tesSUCCESS.
}
}
else
{
assert (saTakerPays > zero);
assert (saTakerGets > zero);
// We need to place the remainder of the offer into its order book.
if (m_journal.debug) m_journal.debug <<
"offer not fully consumed:" <<
" saTakerPays=" << saTakerPays.getFullText () <<
" saTakerGets=" << saTakerGets.getFullText ();
std::uint64_t uOwnerNode;
std::uint64_t uBookNode;
uint256 uDirectory;
// Add offer to owner's directory.
terResult = view.dirAdd (uOwnerNode,
Ledger::getOwnerDirIndex (mTxnAccountID), uLedgerIndex,
std::bind (
&Ledger::ownerDirDescriber, std::placeholders::_1,
std::placeholders::_2, mTxnAccountID));
if (tesSUCCESS == terResult)
{
// Update owner count.
view.ownerCountAdjust (mTxnAccountID, 1, sleCreator);
uint256 const uBookBase (Ledger::getBookBase (
{{uPaysCurrency, uPaysIssuerID},
{uGetsCurrency, uGetsIssuerID}}));
if (m_journal.debug) m_journal.debug <<
"adding to book: " << to_string (uBookBase) <<
" : " << saTakerPays.getHumanCurrency () <<
"/" << to_string (saTakerPays.getIssuer ()) <<
" -> " << saTakerGets.getHumanCurrency () <<
"/" << to_string (saTakerGets.getIssuer ());
// We use the original rate to place the offer.
uDirectory = Ledger::getQualityIndex (uBookBase, uRate);
// Add offer to order book.
terResult = view.dirAdd (uBookNode, uDirectory, uLedgerIndex,
std::bind (
&Ledger::qualityDirDescriber, std::placeholders::_1,
std::placeholders::_2, saTakerPays.getCurrency (),
uPaysIssuerID, saTakerGets.getCurrency (),
uGetsIssuerID, uRate));
}
if (tesSUCCESS == terResult)
{
if (m_journal.debug)
{
m_journal.debug <<
"sfAccount=" <<
to_string (mTxnAccountID);
m_journal.debug <<
"uPaysIssuerID=" <<
to_string (uPaysIssuerID);
m_journal.debug <<
"uGetsIssuerID=" <<
to_string (uGetsIssuerID);
m_journal.debug <<
"saTakerPays.isNative()=" <<
saTakerPays.isNative ();
m_journal.debug <<
"saTakerGets.isNative()=" <<
saTakerGets.isNative ();
m_journal.debug <<
"uPaysCurrency=" <<
saTakerPays.getHumanCurrency ();
m_journal.debug <<
"uGetsCurrency=" <<
saTakerGets.getHumanCurrency ();
}
SLE::pointer sleOffer (mEngine->entryCreate (ltOFFER, uLedgerIndex));
sleOffer->setFieldAccount (sfAccount, mTxnAccountID);
sleOffer->setFieldU32 (sfSequence, uSequence);
sleOffer->setFieldH256 (sfBookDirectory, uDirectory);
sleOffer->setFieldAmount (sfTakerPays, saTakerPays);
sleOffer->setFieldAmount (sfTakerGets, saTakerGets);
sleOffer->setFieldU64 (sfOwnerNode, uOwnerNode);
sleOffer->setFieldU64 (sfBookNode, uBookNode);
if (uExpiration)
sleOffer->setFieldU32 (sfExpiration, uExpiration);
if (bPassive)
sleOffer->setFlag (lsfPassive);
if (bSell)
sleOffer->setFlag (lsfSell);
if (m_journal.debug) m_journal.debug <<
"final terResult=" << transToken (terResult) <<
" sleOffer=" << sleOffer->getJson (0);
}
}
if (terResult != tesSUCCESS)
{
m_journal.debug <<
"final terResult=" << transToken (terResult);
}
return terResult;
}
// Append a node and insert before it any implied nodes.
// Offers may go back to back.
// <-- terResult: tesSUCCESS, temBAD_PATH, terNO_ACCOUNT, terNO_AUTH, terNO_LINE, tecPATH_DRY
TER PathState::pushNode (
const int iType,
const uint160& uAccountID,
const uint160& uCurrencyID,
const uint160& uIssuerID)
{
Node pnCur;
const bool bFirst = vpnNodes.empty ();
const Node& pnPrv = bFirst ? Node () : vpnNodes.back ();
// true, iff node is a ripple account. false, iff node is an offer node.
const bool bAccount = is_bit_set (iType, STPathElement::typeAccount);
// true, iff currency supplied.
// Currency is specified for the output of the current node.
const bool bCurrency = is_bit_set (iType, STPathElement::typeCurrency);
// Issuer is specified for the output of the current node.
const bool bIssuer = is_bit_set (iType, STPathElement::typeIssuer);
TER terResult = tesSUCCESS;
WriteLog (lsTRACE, RippleCalc) << "pushNode> " <<
iType <<
": " << (bAccount ? RippleAddress::createHumanAccountID (uAccountID) : "-") <<
" " << (bCurrency ? STAmount::createHumanCurrency (uCurrencyID) : "-") <<
"/" << (bIssuer ? RippleAddress::createHumanAccountID (uIssuerID) : "-");
pnCur.uFlags = iType;
pnCur.uCurrencyID = bCurrency ? uCurrencyID : pnPrv.uCurrencyID;
if (iType & ~STPathElement::typeValidBits)
{
WriteLog (lsDEBUG, RippleCalc) << "pushNode: bad bits.";
terResult = temBAD_PATH;
}
else if (bIssuer && !pnCur.uCurrencyID)
{
WriteLog (lsDEBUG, RippleCalc) << "pushNode: issuer specified for STR.";
terResult = temBAD_PATH;
}
else if (bIssuer && !uIssuerID)
{
WriteLog (lsDEBUG, RippleCalc) << "pushNode: specified bad issuer.";
terResult = temBAD_PATH;
}
else if (!bAccount && !bCurrency && !bIssuer)
{
WriteLog (lsDEBUG, RippleCalc) << "pushNode: offer must specify at least currency or issuer.";
terResult = temBAD_PATH;
}
else if (bAccount)
{
// Account link
pnCur.uAccountID = uAccountID;
pnCur.uIssuerID = bIssuer
? uIssuerID
: !!pnCur.uCurrencyID
? uAccountID
: ACCOUNT_STR;
pnCur.saRevRedeem = STAmount (pnCur.uCurrencyID, uAccountID);
pnCur.saRevIssue = STAmount (pnCur.uCurrencyID, uAccountID);
pnCur.saRevDeliver = STAmount (pnCur.uCurrencyID, pnCur.uIssuerID);
pnCur.saFwdDeliver = pnCur.saRevDeliver;
if (bFirst)
{
// The first node is always correct as is.
nothing ();
}
else if (!uAccountID)
{
WriteLog (lsDEBUG, RippleCalc) << "pushNode: specified bad account.";
terResult = temBAD_PATH;
}
else
{
// Add required intermediate nodes to deliver to current account.
WriteLog (lsTRACE, RippleCalc) << "pushNode: imply for account.";
terResult = pushImply (
pnCur.uAccountID, // Current account.
pnCur.uCurrencyID, // Wanted currency.
!!pnCur.uCurrencyID ? uAccountID : ACCOUNT_STR); // Account as wanted issuer.
// Note: pnPrv may no longer be the immediately previous node.
}
if (tesSUCCESS == terResult && !vpnNodes.empty ())
{
const Node& pnBck = vpnNodes.back ();
bool bBckAccount = is_bit_set (pnBck.uFlags, STPathElement::typeAccount);
if (bBckAccount)
{
SLE::pointer sleRippleState = lesEntries.entryCache (ltRIPPLE_STATE, Ledger::getRippleStateIndex (pnBck.uAccountID, pnCur.uAccountID, pnPrv.uCurrencyID));
if (!sleRippleState)
{
WriteLog (lsTRACE, RippleCalc) << "pushNode: No credit line between "
<< RippleAddress::createHumanAccountID (pnBck.uAccountID)
<< " and "
<< RippleAddress::createHumanAccountID (pnCur.uAccountID)
<< " for "
<< STAmount::createHumanCurrency (pnCur.uCurrencyID)
<< "." ;
WriteLog (lsTRACE, RippleCalc) << getJson ();
terResult = terNO_LINE;
}
else
{
WriteLog (lsTRACE, RippleCalc) << "pushNode: Credit line found between "
<< RippleAddress::createHumanAccountID (pnBck.uAccountID)
<< " and "
<< RippleAddress::createHumanAccountID (pnCur.uAccountID)
<< " for "
<< STAmount::createHumanCurrency (pnCur.uCurrencyID)
<< "." ;
SLE::pointer sleBck = lesEntries.entryCache (ltACCOUNT_ROOT, Ledger::getAccountRootIndex (pnBck.uAccountID));
bool bHigh = pnBck.uAccountID > pnCur.uAccountID;
if (!sleBck)
{
WriteLog (lsWARNING, RippleCalc) << "pushNode: delay: can't receive IOUs from non-existent issuer: " << RippleAddress::createHumanAccountID (pnBck.uAccountID);
terResult = terNO_ACCOUNT;
}
else if ((is_bit_set (sleBck->getFieldU32 (sfFlags), lsfRequireAuth)
&& !is_bit_set (sleRippleState->getFieldU32 (sfFlags), (bHigh ? lsfHighAuth : lsfLowAuth))))
{
WriteLog (lsWARNING, RippleCalc) << "pushNode: delay: can't receive IOUs from issuer without auth.";
terResult = terNO_AUTH;
}
if (tesSUCCESS == terResult)
{
STAmount saOwed = lesEntries.rippleOwed (pnCur.uAccountID, pnBck.uAccountID, pnCur.uCurrencyID);
STAmount saLimit;
if (saOwed <= zero
&& -saOwed >= (saLimit = lesEntries.rippleLimit (pnCur.uAccountID, pnBck.uAccountID, pnCur.uCurrencyID)))
{
WriteLog (lsWARNING, RippleCalc) <<
"pushNode: dry:" <<
" saOwed=" << saOwed <<
" saLimit=" << saLimit;
terResult = tecPATH_DRY;
}
}
}
}
}
if (tesSUCCESS == terResult)
{
vpnNodes.push_back (pnCur);
}
}
else
{
// Offer link
// Offers bridge a change in currency & issuer or just a change in issuer.
pnCur.uIssuerID = bIssuer
? uIssuerID
: !!pnCur.uCurrencyID
? !!pnPrv.uIssuerID
? pnPrv.uIssuerID // Default to previous issuer
: pnPrv.uAccountID // Or previous account if no previous issuer.
: ACCOUNT_STR;
pnCur.saRateMax = saZero;
pnCur.saRevDeliver = STAmount (pnCur.uCurrencyID, pnCur.uIssuerID);
pnCur.saFwdDeliver = pnCur.saRevDeliver;
if (!!pnCur.uCurrencyID != !!pnCur.uIssuerID)
{
WriteLog (lsDEBUG, RippleCalc) << "pushNode: currency is inconsistent with issuer.";
terResult = temBAD_PATH;
}
else if(!LedgerDump::enactHistoricalQuirk (QuirkSameCurrencyOffer) &&
pnPrv.uCurrencyID == pnCur.uCurrencyID &&
pnPrv.uIssuerID == pnCur.uIssuerID)
{
WriteLog(lsDEBUG, RippleCalc) <<
"pushNode: bad path: offer to same currency and issuer";
terResult = temBAD_PATH;
}
else
{
// Previous is an account.
WriteLog (lsTRACE, RippleCalc) << "pushNode: imply for offer.";
// Insert intermediary issuer account if needed.
terResult = pushImply (
ACCOUNT_STR, // Rippling, but offers don't have an account.
pnPrv.uCurrencyID,
pnPrv.uIssuerID);
}
if (tesSUCCESS == terResult)
{
vpnNodes.push_back (pnCur);
}
}
WriteLog (lsTRACE, RippleCalc) << "pushNode< : " << transToken (terResult);
return terResult;
}
TER doApply () override
{
assert (mTxnAccount);
// A ticket counts against the reserve of the issuing account, but we check
// the starting balance because we want to allow dipping into the reserve to
// pay fees.
auto const accountReserve (mEngine->getLedger ()->getReserve (
mTxnAccount->getFieldU32 (sfOwnerCount) + 1));
if (mPriorBalance.getNValue () < accountReserve)
return tecINSUFFICIENT_RESERVE;
std::uint32_t expiration (0);
if (mTxn.isFieldPresent (sfExpiration))
{
expiration = mTxn.getFieldU32 (sfExpiration);
if (!expiration)
{
m_journal.warning <<
"Malformed ticket requestion: bad expiration";
return temBAD_EXPIRATION;
}
if (mEngine->getLedger ()->getParentCloseTimeNC () >= expiration)
return tesSUCCESS;
}
SLE::pointer sleTicket = mEngine->entryCreate (ltTICKET,
Ledger::getTicketIndex (mTxnAccountID, mTxn.getSequence ()));
sleTicket->setFieldAccount (sfAccount, mTxnAccountID);
sleTicket->setFieldU32 (sfSequence, mTxn.getSequence ());
if (expiration != 0)
sleTicket->setFieldU32 (sfExpiration, expiration);
if (mTxn.isFieldPresent (sfTarget))
{
Account const target_account (mTxn.getFieldAccount160 (sfTarget));
SLE::pointer sleTarget = mEngine->entryCache (ltACCOUNT_ROOT,
Ledger::getAccountRootIndex (target_account));
// Destination account does not exist.
if (!sleTarget)
return tecNO_TARGET;
// The issuing account is the default account to which the ticket
// applies so don't bother saving it if that's what's specified.
if (target_account != mTxnAccountID)
sleTicket->setFieldAccount (sfTarget, target_account);
}
std::uint64_t hint;
auto describer = [&](SLE::pointer p, bool b)
{
Ledger::ownerDirDescriber(p, b, mTxnAccountID);
};
TER result = mEngine->view ().dirAdd (
hint,
Ledger::getOwnerDirIndex (mTxnAccountID),
sleTicket->getIndex (),
describer);
m_journal.trace <<
"Creating ticket " << to_string (sleTicket->getIndex ()) <<
": " << transHuman (result);
if (result != tesSUCCESS)
return result;
sleTicket->setFieldU64(sfOwnerNode, hint);
// If we succeeded, the new entry counts agains the creator's reserve.
mEngine->view ().incrementOwnerCount (mTxnAccount);
return result;
}
TER doApply () override
{
// Divvy if source or destination is non-native or if there are paths.
std::uint32_t const uTxFlags = mTxn.getFlags ();
bool const partialPaymentAllowed = uTxFlags & tfPartialPayment;
bool const limitQuality = uTxFlags & tfLimitQuality;
bool const defaultPathsAllowed = !(uTxFlags & tfNoDivvyDirect);
bool const bPaths = mTxn.isFieldPresent (sfPaths);
bool const bMax = mTxn.isFieldPresent (sfSendMax);
AccountID const uDstAccountID (mTxn.getFieldAccount160 (sfDestination));
STAmount const saDstAmount (mTxn.getFieldAmount (sfAmount));
STAmount maxSourceAmount;
if (bMax)
maxSourceAmount = mTxn.getFieldAmount (sfSendMax);
else if (saDstAmount.native ())
maxSourceAmount = saDstAmount;
else
maxSourceAmount = STAmount (
{saDstAmount.getCurrency (), mTxnAccountID},
saDstAmount.mantissa(), saDstAmount.exponent (),
saDstAmount < zero);
m_journal.trace <<
"maxSourceAmount=" << maxSourceAmount.getFullText () <<
" saDstAmount=" << saDstAmount.getFullText ();
// Open a ledger for editing.
auto const index = getAccountRootIndex (uDstAccountID);
SLE::pointer sleDst (mEngine->view().entryCache (ltACCOUNT_ROOT, index));
if (!sleDst)
{
// Destination account does not exist.
if (!saDstAmount.native ())
{
m_journal.trace <<
"Delay transaction: Destination account does not exist.";
// Another transaction could create the account and then this
// transaction would succeed.
return tecNO_DST;
}
else if (mParams & tapOPEN_LEDGER && partialPaymentAllowed)
{
// You cannot fund an account with a partial payment.
// Make retry work smaller, by rejecting this.
m_journal.trace <<
"Delay transaction: Partial payment not allowed to create account.";
// Another transaction could create the account and then this
// transaction would succeed.
return telNO_DST_PARTIAL;
}
else if (saDstAmount < STAmount (mEngine->getLedger ()->getReserve (0)))
{
// getReserve() is the minimum amount that an account can have.
// Reserve is not scaled by load.
m_journal.trace <<
"Delay transaction: Destination account does not exist. " <<
"Insufficent payment to create account.";
// TODO: dedupe
// Another transaction could create the account and then this
// transaction would succeed.
return tecNO_DST_INSUF_XDV;
}
// Create the account.
sleDst = std::make_shared<SLE>(ltACCOUNT_ROOT,
getAccountRootIndex (uDstAccountID));
sleDst->setFieldAccount (sfAccount, uDstAccountID);
sleDst->setFieldU32 (sfSequence, 1);
mEngine->view().entryCreate(sleDst);
}
else if ((sleDst->getFlags () & lsfRequireDestTag) &&
!mTxn.isFieldPresent (sfDestinationTag))
{
// The tag is basically account-specific information we don't
// understand, but we can require someone to fill it in.
// We didn't make this test for a newly-formed account because there's
// no way for this field to be set.
m_journal.trace << "Malformed transaction: DestinationTag required.";
return tecDST_TAG_NEEDED;
}
else
{
// Tell the engine that we are intending to change the the destination
// account. The source account gets always charged a fee so it's always
// marked as modified.
mEngine->view().entryModify (sleDst);
}
TER terResult;
bool const bDivvy = bPaths || bMax || !saDstAmount.native ();
// XXX Should bMax be sufficient to imply divvy?
if (bDivvy)
{
// Divvy payment with at least one intermediate step and uses
// transitive balances.
// Copy paths into an editable class.
STPathSet spsPaths = mTxn.getFieldPathSet (sfPaths);
try
{
path::DivvyCalc::Input rcInput;
rcInput.partialPaymentAllowed = partialPaymentAllowed;
rcInput.defaultPathsAllowed = defaultPathsAllowed;
rcInput.limitQuality = limitQuality;
rcInput.deleteUnfundedOffers = true;
rcInput.isLedgerOpen = static_cast<bool>(mParams & tapOPEN_LEDGER);
bool pathTooBig = spsPaths.size () > MaxPathSize;
for (auto const& path : spsPaths)
if (path.size () > MaxPathLength)
pathTooBig = true;
if (rcInput.isLedgerOpen && pathTooBig)
{
terResult = telBAD_PATH_COUNT; // Too many paths for proposed ledger.
}
else
{
path::DivvyCalc::Output rc;
{
ScopedDeferCredits g (mEngine->view ());
rc = path::DivvyCalc::divvyCalculate (
mEngine->view (),
maxSourceAmount,
saDstAmount,
uDstAccountID,
mTxnAccountID,
spsPaths,
&rcInput);
}
// TODO: is this right? If the amount is the correct amount, was
// the delivered amount previously set?
if (rc.result () == tesSUCCESS && rc.actualAmountOut != saDstAmount)
mEngine->view ().setDeliveredAmount (rc.actualAmountOut);
terResult = rc.result ();
}
// TODO(tom): what's going on here?
if (isTerRetry (terResult))
terResult = tecPATH_DRY;
}
catch (std::exception const& e)
{
m_journal.trace <<
"Caught throw: " << e.what ();
terResult = tefEXCEPTION;
}
}
else
{
// Direct XDV payment.
// uOwnerCount is the number of entries in this legder for this
// account that require a reserve.
auto const uOwnerCount = mTxnAccount->getFieldU32 (sfOwnerCount);
// This is the total reserve in drops.
std::uint64_t const uReserve =
mEngine->getLedger ()->getReserve (uOwnerCount);
// mPriorBalance is the balance on the sending account BEFORE the
// fees were charged. We want to make sure we have enough reserve
// to send. Allow final spend to use reserve for fee.
auto const mmm = std::max(mTxn.getTransactionFee (),
STAmount (uReserve));
if (mPriorBalance < saDstAmount + mmm)
{
// Vote no. However the transaction might succeed, if applied in
// a different order.
m_journal.trace << "Delay transaction: Insufficient funds: " <<
" " << mPriorBalance.getText () <<
" / " << (saDstAmount + mmm).getText () <<
" (" << uReserve << ")";
terResult = tecUNFUNDED_PAYMENT;
}
else
{
// The source account does have enough money, so do the
// arithmetic for the transfer and make the ledger change.
mTxnAccount->setFieldAmount (sfBalance,
mSourceBalance - saDstAmount);
sleDst->setFieldAmount (sfBalance,
sleDst->getFieldAmount (sfBalance) + saDstAmount);
// Re-arm the password change fee if we can and need to.
if ((sleDst->getFlags () & lsfPasswordSpent))
sleDst->clearFlag (lsfPasswordSpent);
terResult = tesSUCCESS;
}
}
std::string strToken;
std::string strHuman;
if (transResultInfo (terResult, strToken, strHuman))
{
m_journal.trace <<
strToken << ": " << strHuman;
}
else
{
assert (false);
}
return terResult;
}
TER TransactionEngine::applyTransaction (
STTx const& txn,
TransactionEngineParams params,
bool& didApply)
{
WriteLog (lsTRACE, TransactionEngine) << "applyTransaction>";
didApply = false;
assert (mLedger);
uint256 const& txID = txn.getTransactionID ();
mNodes.init (mLedger, txID, mLedger->getLedgerSeq (), params);
#ifdef BEAST_DEBUG
if (1)
{
Serializer ser;
txn.add (ser);
SerializerIterator sit (ser);
STTx s2 (sit);
if (!s2.isEquivalent (txn))
{
WriteLog (lsFATAL, TransactionEngine) <<
"Transaction serdes mismatch";
WriteLog (lsINFO, TransactionEngine) << txn.getJson (0);
WriteLog (lsFATAL, TransactionEngine) << s2.getJson (0);
assert (false);
}
}
#endif
if (!txID)
{
WriteLog (lsWARNING, TransactionEngine) <<
"applyTransaction: invalid transaction id";
return temINVALID;
}
TER terResult = Transactor::transact (txn, params, this);
if (terResult == temUNKNOWN)
{
WriteLog (lsWARNING, TransactionEngine) <<
"applyTransaction: Invalid transaction: unknown transaction type";
return temUNKNOWN;
}
if (ShouldLog (lsDEBUG, TransactionEngine))
{
std::string strToken;
std::string strHuman;
transResultInfo (terResult, strToken, strHuman);
WriteLog (lsDEBUG, TransactionEngine) <<
"applyTransaction: terResult=" << strToken <<
" : " << terResult <<
" : " << strHuman;
}
if (isTesSuccess (terResult))
didApply = true;
else if (isTecClaim (terResult) && !(params & tapRETRY))
{
// only claim the transaction fee
WriteLog (lsDEBUG, TransactionEngine) << "Reprocessing to only claim fee";
mNodes.clear ();
SLE::pointer txnAcct = entryCache (ltACCOUNT_ROOT,
getAccountRootIndex (txn.getSourceAccount ()));
if (!txnAcct)
terResult = terNO_ACCOUNT;
else
{
std::uint32_t t_seq = txn.getSequence ();
std::uint32_t a_seq = txnAcct->getFieldU32 (sfSequence);
if (a_seq < t_seq)
terResult = terPRE_SEQ;
else if (a_seq > t_seq)
terResult = tefPAST_SEQ;
else
{
STAmount fee = txn.getTransactionFee ();
STAmount balance = txnAcct->getFieldAmount (sfBalance);
STAmount balanceVBC = txnAcct->getFieldAmount(sfBalanceVBC);
// We retry/reject the transaction if the account
// balance is zero or we're applying against an open
// ledger and the balance is less than the fee
if ((balance == zero) || (balanceVBC.getNValue() == 0) ||
((params & tapOPEN_LEDGER) && (balance < fee)))
{
// Account has no funds or ledger is open
terResult = terINSUF_FEE_B;
}
else
{
if (fee > balance)
fee = balance;
txnAcct->setFieldAmount (sfBalance, balance - fee);
txnAcct->setFieldAmount(sfBalanceVBC, balanceVBC);
txnAcct->setFieldU32 (sfSequence, t_seq + 1);
entryModify (txnAcct);
didApply = true;
}
}
}
}
else
WriteLog (lsDEBUG, TransactionEngine) << "Not applying transaction " << txID;
if (didApply)
{
if (!checkInvariants (terResult, txn, params))
{
WriteLog (lsFATAL, TransactionEngine) <<
"Transaction violates invariants";
WriteLog (lsFATAL, TransactionEngine) <<
txn.getJson (0);
WriteLog (lsFATAL, TransactionEngine) <<
transToken (terResult) << ": " << transHuman (terResult);
WriteLog (lsFATAL, TransactionEngine) <<
mNodes.getJson (0);
didApply = false;
terResult = tefINTERNAL;
}
else
{
// Transaction succeeded fully or (retries are not allowed and the
// transaction could claim a fee)
Serializer m;
mNodes.calcRawMeta (m, terResult, mTxnSeq++);
txnWrite ();
Serializer s;
txn.add (s);
if (params & tapOPEN_LEDGER)
{
if (!mLedger->addTransaction (txID, s))
{
WriteLog (lsFATAL, TransactionEngine) <<
"Tried to add transaction to open ledger that already had it";
assert (false);
throw std::runtime_error ("Duplicate transaction applied");
}
}
else
{
if (!mLedger->addTransaction (txID, s, m))
{
WriteLog (lsFATAL, TransactionEngine) <<
"Tried to add transaction to ledger that already had it";
assert (false);
throw std::runtime_error ("Duplicate transaction applied to closed ledger");
}
// Charge whatever fee they specified.
STAmount saPaid = txn.getTransactionFee ();
mLedger->destroyCoins (saPaid.getNValue ());
}
}
}
mTxnAccount.reset ();
mNodes.clear ();
if (!(params & tapOPEN_LEDGER) && isTemMalformed (terResult))
{
// XXX Malformed or failed transaction in closed ledger must bow out.
}
return terResult;
}
TER TransferTransactor::doApply ()
{
WriteLog (lsTRACE, LedgerConsensus) << "Transfer transaction is applying\n\n\n\n\n\n";
uint160 const uDstAccountID = mTxn.getFieldAccount160 (sfDestination);
uint256 const objectId = mTxn.getObjectId ();
WriteLog (lsTRACE, LedgerConsensus) << "Transfer transaction is applying";
WriteLog (lsTRACE, LedgerConsensus) << "___________________________________applying";
WriteLog (lsTRACE, LedgerConsensus) << "\n\n\n\n\n\n";
WriteLog (lsTRACE, LedgerConsensus) << uDstAccountID;
WriteLog (lsTRACE, LedgerConsensus) << objectId;
if (!uDstAccountID)
{
m_journal.trace <<
"Malformed transaction: Transfer destination account not specified.";
return temDST_NEEDED;
}
WriteLog (lsTRACE, LedgerConsensus) << "Checking object in db \n\n\n\n\n\n";
SLE::pointer sleObj (mEngine->entryCache (
ltOWNERSHIP, objectId));
WriteLog (lsTRACE, LedgerConsensus) << objectId << " \n\n\n\n\n\n";
WriteLog (lsTRACE, LedgerConsensus) << "Checked object in db \n\n\n\n\n\n";
WriteLog (lsTRACE, LedgerConsensus) << sleObj<< " \n\n\n\n\n\n";
if (sleObj)
{
// Object exists.
WriteLog (lsTRACE, LedgerConsensus) << "Object exists \n\n\n\n\n\n Source account";
WriteLog (lsTRACE, LedgerConsensus) << mTxn.getSourceAccount().getAccountID();
WriteLog (lsTRACE, LedgerConsensus) << "Object exists \n\n\n\n\n\n New account";
WriteLog (lsTRACE, LedgerConsensus) << uDstAccountID;
if(sleObj->getFieldAccount160(sfAccount) != mTxn.getSourceAccount().getAccountID())
{
WriteLog (lsTRACE, LedgerConsensus) << "Not your object \n\n\n\n\n\n";
return temMALFORMED;
}
SLE::pointer sleDst (mEngine->entryCache (
ltACCOUNT_ROOT, Ledger::getAccountRootIndex (uDstAccountID)));
if (!sleDst)
{
WriteLog (lsTRACE, LedgerConsensus) << "Destination account doesnt exist \n\n\n\n\n\n";
return temMALFORMED;
}
sleObj->setFieldAccount (sfAccount, uDstAccountID);
WriteLog (lsTRACE, LedgerConsensus) << "New dstAccount is set \n\n\n\n\n\n";
}
else
{
WriteLog (lsTRACE, LedgerConsensus) << "You cannot make Transfer to non-existing object \n\n\n\n\n\n";
return temMALFORMED;
}
WriteLog (lsTRACE, LedgerConsensus) << "Transfer applying is finished \n\n\n\n\n\n";
return tesSUCCESS;
}
// Take as much as possible. Adjusts account balances. Charges fees on top to taker.
// --> uBookBase: The order book to take against.
// --> saTakerPays: What the taker offers (w/ issuer)
// --> saTakerGets: What the taker wanted (w/ issuer)
// <-- saTakerPaid: What taker could have paid including saved not including fees. To reduce an offer.
// <-- saTakerGot: What taker got not including fees. To reduce an offer.
// <-- terResult: tesSUCCESS, terNO_ACCOUNT, telFAILED_PROCESSING, or tecFAILED_PROCESSING
// <-- bUnfunded: if tesSUCCESS, consider offer unfunded after taking.
TER OfferCreateTransactor::takeOffers (
const bool bOpenLedger,
const bool bPassive,
const bool bSell,
uint256 const& uBookBase,
const uint160& uTakerAccountID,
SLE::ref sleTakerAccount,
const STAmount& saTakerPays,
const STAmount& saTakerGets,
STAmount& saTakerPaid,
STAmount& saTakerGot,
bool& bUnfunded)
{
// The book has the most elements. Take the perspective of the book.
// Book is ordered for taker: taker pays / taker gets (smaller is better)
// The order is for the other books currencys for get and pays are opposites.
// We want the same ratio for the respective currencies.
// So we swap paid and gets for determing take quality.
assert (saTakerPays && saTakerGets);
WriteLog (lsDEBUG, OfferCreateTransactor) << "takeOffers: bSell: " << bSell << ": against book: " << uBookBase.ToString ();
LedgerEntrySet& lesActive = mEngine->getNodes ();
const uint64 uTakeQuality = STAmount::getRate (saTakerGets, saTakerPays);
STAmount saTakerRate = STAmount::setRate (uTakeQuality);
const uint160 uTakerPaysAccountID = saTakerPays.getIssuer ();
const uint160 uTakerGetsAccountID = saTakerGets.getIssuer ();
TER terResult = temUNCERTAIN;
boost::unordered_set<uint256> usOfferUnfundedBecame; // Offers that became unfunded.
boost::unordered_set<uint160> usAccountTouched; // Accounts touched.
saTakerPaid = STAmount (saTakerPays.getCurrency (), saTakerPays.getIssuer ());
saTakerGot = STAmount (saTakerGets.getCurrency (), saTakerGets.getIssuer ());
bUnfunded = false;
OrderBookIterator bookIterator (lesActive,
saTakerPays.getCurrency(), saTakerPays.getIssuer(),
saTakerGets.getCurrency(), saTakerGets.getIssuer());
while ((temUNCERTAIN == terResult) && bookIterator.nextOffer())
{
STAmount saTakerFunds = lesActive.accountFunds (uTakerAccountID, saTakerPays);
STAmount saSubTakerPays = saTakerPays - saTakerPaid; // How much more to spend.
STAmount saSubTakerGets = saTakerGets - saTakerGot; // How much more is wanted.
uint64 uTipQuality = bookIterator.getCurrentQuality();
if (!saTakerFunds.isPositive ())
{
// Taker is out of funds. Don't create the offer.
bUnfunded = true;
terResult = tesSUCCESS;
}
else if (!saSubTakerPays.isPositive() || !saSubTakerGets.isPositive())
{
// Offer is completely consumed
terResult = tesSUCCESS;
}
else if ((uTakeQuality < uTipQuality)
|| (bPassive && uTakeQuality == uTipQuality))
{
// Offer does not cross this offer
STAmount saTipRate = STAmount::setRate (uTipQuality);
WriteLog (lsDEBUG, OfferCreateTransactor) << boost::str (boost::format ("takeOffers: done: uTakeQuality=%d %c uTipQuality=%d saTakerRate=%s %c saTipRate=%s bPassive=%d")
% uTakeQuality
% (uTakeQuality == uTipQuality
? '='
: uTakeQuality < uTipQuality
? '<'
: '>')
% uTipQuality
% saTakerRate
% (saTakerRate == saTipRate
? '='
: saTakerRate < saTipRate
? '<'
: '>')
% saTipRate
% bPassive);
terResult = tesSUCCESS;
}
else
{
// We have a crossing offer to consider.
SLE::pointer sleOffer = bookIterator.getCurrentOffer ();
if (!sleOffer)
{ // offer is in directory but not in ledger
uint256 offerIndex = bookIterator.getCurrentIndex ();
WriteLog (lsWARNING, OfferCreateTransactor) << "takeOffers: offer not found : " << offerIndex;
usMissingOffers.insert (missingOffer_t (
bookIterator.getCurrentIndex (), bookIterator.getCurrentDirectory ()));
}
else
{
WriteLog (lsDEBUG, OfferCreateTransactor) << "takeOffers: considering offer : " << sleOffer->getJson (0);
const uint160& uOfferOwnerID = sleOffer->getFieldAccount160 (sfAccount);
STAmount saOfferPays = sleOffer->getFieldAmount (sfTakerGets);
STAmount saOfferGets = sleOffer->getFieldAmount (sfTakerPays);
STAmount saOfferFunds; // Funds of offer owner to payout.
bool bValid;
bValid = bValidOffer (
sleOffer, uOfferOwnerID, saOfferPays, saOfferGets,
uTakerAccountID,
usOfferUnfundedFound, usOfferUnfundedBecame, usAccountTouched,
saOfferFunds);
if (bValid)
{
STAmount saSubTakerPaid;
STAmount saSubTakerGot;
STAmount saTakerIssuerFee;
STAmount saOfferIssuerFee;
STAmount saOfferRate = STAmount::setRate (uTipQuality);
WriteLog (lsTRACE, OfferCreateTransactor) << "takeOffers: applyOffer: saTakerPays: " << saTakerPays.getFullText ();
WriteLog (lsTRACE, OfferCreateTransactor) << "takeOffers: applyOffer: saTakerPaid: " << saTakerPaid.getFullText ();
WriteLog (lsTRACE, OfferCreateTransactor) << "takeOffers: applyOffer: saTakerFunds: " << saTakerFunds.getFullText ();
WriteLog (lsTRACE, OfferCreateTransactor) << "takeOffers: applyOffer: saOfferFunds: " << saOfferFunds.getFullText ();
WriteLog (lsTRACE, OfferCreateTransactor) << "takeOffers: applyOffer: saOfferPays: " << saOfferPays.getFullText ();
WriteLog (lsTRACE, OfferCreateTransactor) << "takeOffers: applyOffer: saOfferGets: " << saOfferGets.getFullText ();
WriteLog (lsTRACE, OfferCreateTransactor) << "takeOffers: applyOffer: saOfferRate: " << saOfferRate.getFullText ();
WriteLog (lsTRACE, OfferCreateTransactor) << "takeOffers: applyOffer: saSubTakerPays: " << saSubTakerPays.getFullText ();
WriteLog (lsTRACE, OfferCreateTransactor) << "takeOffers: applyOffer: saSubTakerGets: " << saSubTakerGets.getFullText ();
WriteLog (lsTRACE, OfferCreateTransactor) << "takeOffers: applyOffer: saTakerPays: " << saTakerPays.getFullText ();
WriteLog (lsTRACE, OfferCreateTransactor) << "takeOffers: applyOffer: saTakerGets: " << saTakerGets.getFullText ();
bool bOfferDelete = STAmount::applyOffer (
bSell,
lesActive.rippleTransferRate (uTakerAccountID, uOfferOwnerID, uTakerPaysAccountID),
lesActive.rippleTransferRate (uOfferOwnerID, uTakerAccountID, uTakerGetsAccountID),
saOfferRate,
saOfferFunds,
saTakerFunds,
saOfferPays,
saOfferGets,
saSubTakerPays,
saSubTakerGets,
saSubTakerPaid,
saSubTakerGot,
saTakerIssuerFee,
saOfferIssuerFee);
WriteLog (lsDEBUG, OfferCreateTransactor) << "takeOffers: applyOffer: saSubTakerPaid: " << saSubTakerPaid.getFullText ();
WriteLog (lsDEBUG, OfferCreateTransactor) << "takeOffers: applyOffer: saSubTakerGot: " << saSubTakerGot.getFullText ();
// Adjust offer
// Offer owner will pay less. Subtract what taker just got.
sleOffer->setFieldAmount (sfTakerGets, saOfferPays -= saSubTakerGot);
// Offer owner will get less. Subtract what owner just paid.
sleOffer->setFieldAmount (sfTakerPays, saOfferGets -= saSubTakerPaid);
mEngine->entryModify (sleOffer);
if (bOfferDelete)
{
// Offer now fully claimed or now unfunded.
WriteLog (lsDEBUG, OfferCreateTransactor) << "takeOffers: Offer claimed: Delete.";
usOfferUnfundedBecame.insert (sleOffer->getIndex()); // Delete unfunded offer on success.
// Offer owner's account is no longer pristine.
usAccountTouched.insert (uOfferOwnerID);
}
else if (saSubTakerGot)
{
WriteLog (lsDEBUG, OfferCreateTransactor) << "takeOffers: Offer partial claim.";
if (!saOfferPays.isPositive () || !saOfferGets.isPositive ())
{
WriteLog (lsWARNING, OfferCreateTransactor) << "takeOffers: ILLEGAL OFFER RESULT.";
bUnfunded = true;
terResult = bOpenLedger ? telFAILED_PROCESSING : tecFAILED_PROCESSING;
}
}
else
{
// Taker got nothing, probably due to rounding. Consider taker unfunded.
WriteLog (lsDEBUG, OfferCreateTransactor) << "takeOffers: No claim.";
bUnfunded = true;
terResult = tesSUCCESS; // Done.
}
assert (uTakerGetsAccountID == saSubTakerGot.getIssuer ());
assert (uTakerPaysAccountID == saSubTakerPaid.getIssuer ());
if (!bUnfunded)
{
// Distribute funds. The sends charge appropriate fees which are implied by offer.
terResult = lesActive.accountSend (uOfferOwnerID, uTakerAccountID, saSubTakerGot); // Offer owner pays taker.
if (tesSUCCESS == terResult)
terResult = lesActive.accountSend (uTakerAccountID, uOfferOwnerID, saSubTakerPaid); // Taker pays offer owner.
if (bSell)
{
// Sell semantics:
// Reduce amount considered received to original offer's rate.
// Not by crossing rate, which is higher.
STAmount saEffectiveGot = STAmount::divide(saSubTakerPaid, saTakerRate, saTakerGets);
saSubTakerGot = std::min(saEffectiveGot, saSubTakerGot);
}
else
{
// Buy semantics: Reduce amount considered paid by taker's rate. Not by actual cost which is lower.
// That is, take less as to just satify our buy requirement.
STAmount saTakerCould = saTakerPays - saTakerPaid; // Taker could pay.
if (saTakerFunds < saTakerCould)
saTakerCould = saTakerFunds;
STAmount saTakerUsed = STAmount::multiply (saSubTakerGot, saTakerRate, saTakerPays);
WriteLog (lsDEBUG, OfferCreateTransactor) << "takeOffers: applyOffer: saTakerCould: " << saTakerCould.getFullText ();
WriteLog (lsDEBUG, OfferCreateTransactor) << "takeOffers: applyOffer: saSubTakerGot: " << saSubTakerGot.getFullText ();
WriteLog (lsDEBUG, OfferCreateTransactor) << "takeOffers: applyOffer: saTakerRate: " << saTakerRate.getFullText ();
WriteLog (lsDEBUG, OfferCreateTransactor) << "takeOffers: applyOffer: saTakerUsed: " << saTakerUsed.getFullText ();
saSubTakerPaid = std::min (saTakerCould, saTakerUsed);
}
saTakerPaid += saSubTakerPaid;
saTakerGot += saSubTakerGot;
if (tesSUCCESS == terResult)
terResult = temUNCERTAIN;
}
}
}
}
}
if (temUNCERTAIN == terResult)
terResult = tesSUCCESS;
WriteLog (lsDEBUG, OfferCreateTransactor) << "takeOffers: " << transToken (terResult);
if (tesSUCCESS == terResult)
{
// On success, delete offers that became unfunded.
BOOST_FOREACH (uint256 const & uOfferIndex, usOfferUnfundedBecame)
{
WriteLog (lsDEBUG, OfferCreateTransactor) << "takeOffers: became unfunded: " << uOfferIndex.ToString ();
terResult = lesActive.offerDelete (uOfferIndex);
if (tesSUCCESS != terResult)
break;
}
// Take as much as possible. Adjusts account balances. Charges fees on top to taker.
// --> uBookBase: The order book to take against.
// --> saTakerPays: What the taker offers (w/ issuer)
// --> saTakerGets: What the taker wanted (w/ issuer)
// <-- saTakerPaid: What taker could have paid including saved not including fees. To reduce an offer.
// <-- saTakerGot: What taker got not including fees. To reduce an offer.
// <-- terResult: tesSUCCESS, terNO_ACCOUNT, telFAILED_PROCESSING, or tecFAILED_PROCESSING
// <-- bUnfunded: if tesSUCCESS, consider offer unfunded after taking.
TER OfferCreateTransactor::takeOffers (
const bool bOpenLedger,
const bool bPassive,
const bool bSell,
uint256 const& uBookBase,
const uint160& uTakerAccountID,
SLE::ref sleTakerAccount,
const STAmount& saTakerPays,
const STAmount& saTakerGets,
STAmount& saTakerPaid,
STAmount& saTakerGot,
bool& bUnfunded)
{
// The book has the most elements. Take the perspective of the book.
// Book is ordered for taker: taker pays / taker gets (smaller is better)
// The order is for the other books currencys for get and pays are opposites.
// We want the same ratio for the respective currencies.
// So we swap paid and gets for determing take quality.
assert (saTakerPays && saTakerGets);
WriteLog (lsDEBUG, OfferCreateTransactor) << "takeOffers: bSell: " << bSell << ": against book: " << uBookBase.ToString ();
LedgerEntrySet& lesActive = mEngine->getNodes ();
uint256 uTipIndex = uBookBase;
const uint256 uBookEnd = Ledger::getQualityNext (uBookBase);
const uint64 uTakeQuality = STAmount::getRate (saTakerGets, saTakerPays);
STAmount saTakerRate = STAmount::setRate (uTakeQuality);
const uint160 uTakerPaysAccountID = saTakerPays.getIssuer ();
const uint160 uTakerGetsAccountID = saTakerGets.getIssuer ();
TER terResult = temUNCERTAIN;
boost::unordered_set<uint256> usOfferUnfundedBecame; // Offers that became unfunded.
boost::unordered_set<uint160> usAccountTouched; // Accounts touched.
saTakerPaid = STAmount (saTakerPays.getCurrency (), saTakerPays.getIssuer ());
saTakerGot = STAmount (saTakerGets.getCurrency (), saTakerGets.getIssuer ());
bUnfunded = false;
while (temUNCERTAIN == terResult)
{
SLE::pointer sleOfferDir;
uint64 uTipQuality = 0;
STAmount saTakerFunds = lesActive.accountFunds (uTakerAccountID, saTakerPays);
STAmount saSubTakerPays = saTakerPays - saTakerPaid; // How much more to spend.
STAmount saSubTakerGets = saTakerGets - saTakerGot; // How much more is wanted.
// Figure out next offer to take, if needed.
if (saTakerFunds.isPositive () // Taker has funds available.
&& saSubTakerPays.isPositive ()
&& saSubTakerGets.isPositive ())
{
sleOfferDir = mEngine->entryCache (ltDIR_NODE, lesActive.getNextLedgerIndex (uTipIndex, uBookEnd));
if (sleOfferDir)
{
uTipIndex = sleOfferDir->getIndex ();
uTipQuality = Ledger::getQuality (uTipIndex);
WriteLog (lsDEBUG, OfferCreateTransactor) << boost::str (boost::format ("takeOffers: possible counter offer found: uTipQuality=%d uTipIndex=%s")
% uTipQuality
% uTipIndex.ToString ());
}
else
{
WriteLog (lsTRACE, OfferCreateTransactor) << "takeOffers: counter offer book is empty: "
<< uTipIndex.ToString ()
<< " ... "
<< uBookEnd.ToString ();
}
}
if (!saTakerFunds.isPositive ()) // Taker has no funds.
{
// Done. Ran out of funds on previous round. As fees aren't calculated directly in this routine, funds are checked here.
WriteLog (lsDEBUG, OfferCreateTransactor) << "takeOffers: done: taker unfunded.";
bUnfunded = true; // Don't create an order.
terResult = tesSUCCESS;
}
else if (!sleOfferDir // No offer directory to take.
|| uTakeQuality < uTipQuality // No offers of sufficient quality available.
|| (bPassive && uTakeQuality == uTipQuality))
{
// Done.
STAmount saTipRate = sleOfferDir ? STAmount::setRate (uTipQuality) : saTakerRate;
WriteLog (lsDEBUG, OfferCreateTransactor) << boost::str (boost::format ("takeOffers: done: dir=%d uTakeQuality=%d %c uTipQuality=%d saTakerRate=%s %c saTipRate=%s bPassive=%d")
% !!sleOfferDir
% uTakeQuality
% (uTakeQuality == uTipQuality
? '='
: uTakeQuality < uTipQuality
? '<'
: '>')
% uTipQuality
% saTakerRate
% (saTakerRate == saTipRate
? '='
: saTakerRate < saTipRate
? '<'
: '>')
% saTipRate
% bPassive);
terResult = tesSUCCESS;
}
else
{
// Have an offer directory to consider.
WriteLog (lsTRACE, OfferCreateTransactor) << "takeOffers: considering dir: " << sleOfferDir->getJson (0);
SLE::pointer sleBookNode;
unsigned int uBookEntry;
uint256 uOfferIndex;
lesActive.dirFirst (uTipIndex, sleBookNode, uBookEntry, uOfferIndex);
SLE::pointer sleOffer = mEngine->entryCache (ltOFFER, uOfferIndex);
WriteLog (lsDEBUG, OfferCreateTransactor) << "takeOffers: considering offer : " << sleOffer->getJson (0);
const uint160 uOfferOwnerID = sleOffer->getFieldAccount160 (sfAccount);
STAmount saOfferPays = sleOffer->getFieldAmount (sfTakerGets);
STAmount saOfferGets = sleOffer->getFieldAmount (sfTakerPays);
STAmount saOfferFunds; // Funds of offer owner to payout.
bool bValid;
bValid = bValidOffer (
sleOfferDir, uOfferIndex, uOfferOwnerID, saOfferPays, saOfferGets,
uTakerAccountID,
usOfferUnfundedFound, usOfferUnfundedBecame, usAccountTouched,
saOfferFunds);
if (bValid)
{
STAmount saSubTakerPaid;
STAmount saSubTakerGot;
STAmount saTakerIssuerFee;
STAmount saOfferIssuerFee;
STAmount saOfferRate = STAmount::setRate (uTipQuality);
WriteLog (lsDEBUG, OfferCreateTransactor) << "takeOffers: applyOffer: saTakerPays: " << saTakerPays.getFullText ();
WriteLog (lsDEBUG, OfferCreateTransactor) << "takeOffers: applyOffer: saTakerPaid: " << saTakerPaid.getFullText ();
WriteLog (lsDEBUG, OfferCreateTransactor) << "takeOffers: applyOffer: saTakerFunds: " << saTakerFunds.getFullText ();
WriteLog (lsDEBUG, OfferCreateTransactor) << "takeOffers: applyOffer: saOfferFunds: " << saOfferFunds.getFullText ();
WriteLog (lsDEBUG, OfferCreateTransactor) << "takeOffers: applyOffer: saOfferPays: " << saOfferPays.getFullText ();
WriteLog (lsDEBUG, OfferCreateTransactor) << "takeOffers: applyOffer: saOfferGets: " << saOfferGets.getFullText ();
WriteLog (lsDEBUG, OfferCreateTransactor) << "takeOffers: applyOffer: saOfferRate: " << saOfferRate.getFullText ();
WriteLog (lsDEBUG, OfferCreateTransactor) << "takeOffers: applyOffer: saSubTakerPays: " << saSubTakerPays.getFullText ();
WriteLog (lsDEBUG, OfferCreateTransactor) << "takeOffers: applyOffer: saSubTakerGets: " << saSubTakerGets.getFullText ();
WriteLog (lsDEBUG, OfferCreateTransactor) << "takeOffers: applyOffer: saTakerPays: " << saTakerPays.getFullText ();
WriteLog (lsDEBUG, OfferCreateTransactor) << "takeOffers: applyOffer: saTakerGets: " << saTakerGets.getFullText ();
bool bOfferDelete = STAmount::applyOffer (
bSell,
lesActive.rippleTransferRate (uTakerAccountID, uOfferOwnerID, uTakerPaysAccountID),
lesActive.rippleTransferRate (uOfferOwnerID, uTakerAccountID, uTakerGetsAccountID),
saOfferRate,
saOfferFunds,
saTakerFunds,
saOfferPays,
saOfferGets,
saSubTakerPays,
saSubTakerGets,
saSubTakerPaid,
saSubTakerGot,
saTakerIssuerFee,
saOfferIssuerFee);
WriteLog (lsDEBUG, OfferCreateTransactor) << "takeOffers: applyOffer: saSubTakerPaid: " << saSubTakerPaid.getFullText ();
WriteLog (lsDEBUG, OfferCreateTransactor) << "takeOffers: applyOffer: saSubTakerGot: " << saSubTakerGot.getFullText ();
// Adjust offer
// Offer owner will pay less. Subtract what taker just got.
sleOffer->setFieldAmount (sfTakerGets, saOfferPays -= saSubTakerGot);
// Offer owner will get less. Subtract what owner just paid.
sleOffer->setFieldAmount (sfTakerPays, saOfferGets -= saSubTakerPaid);
mEngine->entryModify (sleOffer);
if (bOfferDelete)
{
// Offer now fully claimed or now unfunded.
WriteLog (lsDEBUG, OfferCreateTransactor) << "takeOffers: Offer claimed: Delete.";
usOfferUnfundedBecame.insert (uOfferIndex); // Delete unfunded offer on success.
// Offer owner's account is no longer pristine.
usAccountTouched.insert (uOfferOwnerID);
}
else if (saSubTakerGot)
{
WriteLog (lsDEBUG, OfferCreateTransactor) << "takeOffers: Offer partial claim.";
if (!saOfferPays.isPositive () || !saOfferGets.isPositive ())
{
WriteLog (lsWARNING, OfferCreateTransactor) << "takeOffers: ILLEGAL OFFER RESULT.";
bUnfunded = true;
terResult = bOpenLedger ? telFAILED_PROCESSING : tecFAILED_PROCESSING;
}
}
else
{
// Taker got nothing, probably due to rounding. Consider taker unfunded.
WriteLog (lsDEBUG, OfferCreateTransactor) << "takeOffers: No claim.";
bUnfunded = true;
terResult = tesSUCCESS; // Done.
}
assert (uTakerGetsAccountID == saSubTakerGot.getIssuer ());
assert (uTakerPaysAccountID == saSubTakerPaid.getIssuer ());
if (!bUnfunded)
{
// Distribute funds. The sends charge appropriate fees which are implied by offer.
terResult = lesActive.accountSend (uOfferOwnerID, uTakerAccountID, saSubTakerGot); // Offer owner pays taker.
if (tesSUCCESS == terResult)
terResult = lesActive.accountSend (uTakerAccountID, uOfferOwnerID, saSubTakerPaid); // Taker pays offer owner.
if (!bSell)
{
// Buy semantics: Reduce amount considered paid by taker's rate. Not by actual cost which is lower.
// That is, take less as to just satify our buy requirement.
STAmount saTakerCould = saTakerPays - saTakerPaid; // Taker could pay.
if (saTakerFunds < saTakerCould)
saTakerCould = saTakerFunds;
STAmount saTakerUsed = STAmount::multiply (saSubTakerGot, saTakerRate, saTakerPays);
WriteLog (lsDEBUG, OfferCreateTransactor) << "takeOffers: applyOffer: saTakerCould: " << saTakerCould.getFullText ();
WriteLog (lsDEBUG, OfferCreateTransactor) << "takeOffers: applyOffer: saSubTakerGot: " << saSubTakerGot.getFullText ();
WriteLog (lsDEBUG, OfferCreateTransactor) << "takeOffers: applyOffer: saTakerRate: " << saTakerRate.getFullText ();
WriteLog (lsDEBUG, OfferCreateTransactor) << "takeOffers: applyOffer: saTakerUsed: " << saTakerUsed.getFullText ();
saSubTakerPaid = std::min (saTakerCould, saTakerUsed);
}
saTakerPaid += saSubTakerPaid;
saTakerGot += saSubTakerGot;
if (tesSUCCESS == terResult)
terResult = temUNCERTAIN;
}
}
}
}
WriteLog (lsDEBUG, OfferCreateTransactor) << "takeOffers: " << transToken (terResult);
if (tesSUCCESS == terResult)
{
// On success, delete offers that became unfunded.
BOOST_FOREACH (uint256 const & uOfferIndex, usOfferUnfundedBecame)
{
WriteLog (lsDEBUG, OfferCreateTransactor) << "takeOffers: became unfunded: " << uOfferIndex.ToString ();
terResult = lesActive.offerDelete (uOfferIndex);
if (tesSUCCESS != terResult)
break;
}
TER TrustSetTransactor::doApply ()
{
TER terResult = tesSUCCESS;
WriteLog (lsINFO, TrustSetTransactor) << "doTrustSet>";
const STAmount saLimitAmount = mTxn.getFieldAmount (sfLimitAmount);
const bool bQualityIn = mTxn.isFieldPresent (sfQualityIn);
const bool bQualityOut = mTxn.isFieldPresent (sfQualityOut);
const uint160 uCurrencyID = saLimitAmount.getCurrency ();
uint160 uDstAccountID = saLimitAmount.getIssuer ();
const bool bHigh = mTxnAccountID > uDstAccountID; // true, iff current is high account.
uint32 uQualityIn = bQualityIn ? mTxn.getFieldU32 (sfQualityIn) : 0;
uint32 uQualityOut = bQualityOut ? mTxn.getFieldU32 (sfQualityOut) : 0;
if (!saLimitAmount.isLegalNet ())
return temBAD_AMOUNT;
if (bQualityIn && QUALITY_ONE == uQualityIn)
uQualityIn = 0;
if (bQualityOut && QUALITY_ONE == uQualityOut)
uQualityOut = 0;
const uint32 uTxFlags = mTxn.getFlags ();
if (uTxFlags & tfTrustSetMask)
{
WriteLog (lsINFO, TrustSetTransactor) << "doTrustSet: Malformed transaction: Invalid flags set.";
return temINVALID_FLAG;
}
const bool bSetAuth = isSetBit (uTxFlags, tfSetfAuth);
const bool bSetNoRipple = isSetBit (uTxFlags, tfSetNoRipple);
const bool bClearNoRipple = isSetBit (uTxFlags, tfClearNoRipple);
if (bSetAuth && !isSetBit (mTxnAccount->getFieldU32 (sfFlags), lsfRequireAuth))
{
WriteLog (lsINFO, TrustSetTransactor) << "doTrustSet: Retry: Auth not required.";
return tefNO_AUTH_REQUIRED;
}
if (saLimitAmount.isNative ())
{
WriteLog (lsINFO, TrustSetTransactor) << boost::str (boost::format ("doTrustSet: Malformed transaction: Native credit limit: %s")
% saLimitAmount.getFullText ());
return temBAD_LIMIT;
}
if (saLimitAmount.isNegative ())
{
WriteLog (lsINFO, TrustSetTransactor) << "doTrustSet: Malformed transaction: Negative credit limit.";
return temBAD_LIMIT;
}
// Check if destination makes sense.
if (!uDstAccountID || uDstAccountID == ACCOUNT_ONE)
{
WriteLog (lsINFO, TrustSetTransactor) << "doTrustSet: Malformed transaction: Destination account not specified.";
return temDST_NEEDED;
}
if (mTxnAccountID == uDstAccountID)
{
SLE::pointer selDelete = mEngine->entryCache (ltRIPPLE_STATE, Ledger::getRippleStateIndex (mTxnAccountID, uDstAccountID, uCurrencyID));
if (selDelete)
{
WriteLog (lsWARNING, TrustSetTransactor) << "doTrustSet: Clearing redundant line.";
return mEngine->getNodes ().trustDelete (selDelete, mTxnAccountID, uDstAccountID);
}
else
{
WriteLog (lsINFO, TrustSetTransactor) << "doTrustSet: Malformed transaction: Can not extend credit to self.";
return temDST_IS_SRC;
}
}
SLE::pointer sleDst = mEngine->entryCache (ltACCOUNT_ROOT, Ledger::getAccountRootIndex (uDstAccountID));
if (!sleDst)
{
WriteLog (lsINFO, TrustSetTransactor) << "doTrustSet: Delay transaction: Destination account does not exist.";
return tecNO_DST;
}
const uint32 uOwnerCount = mTxnAccount->getFieldU32 (sfOwnerCount);
// The reserve required to create the line.
const uint64 uReserveCreate = (uOwnerCount < 2) ? 0 : mEngine->getLedger ()->getReserve (uOwnerCount + 1);
STAmount saLimitAllow = saLimitAmount;
saLimitAllow.setIssuer (mTxnAccountID);
SLE::pointer sleRippleState = mEngine->entryCache (ltRIPPLE_STATE, Ledger::getRippleStateIndex (mTxnAccountID, uDstAccountID, uCurrencyID));
if (sleRippleState)
{
STAmount saLowBalance;
STAmount saLowLimit;
STAmount saHighBalance;
STAmount saHighLimit;
uint32 uLowQualityIn;
uint32 uLowQualityOut;
uint32 uHighQualityIn;
uint32 uHighQualityOut;
const uint160& uLowAccountID = !bHigh ? mTxnAccountID : uDstAccountID;
const uint160& uHighAccountID = bHigh ? mTxnAccountID : uDstAccountID;
SLE::ref sleLowAccount = !bHigh ? mTxnAccount : sleDst;
SLE::ref sleHighAccount = bHigh ? mTxnAccount : sleDst;
//
// Balances
//
saLowBalance = sleRippleState->getFieldAmount (sfBalance);
saHighBalance = -saLowBalance;
//
// Limits
//
sleRippleState->setFieldAmount (!bHigh ? sfLowLimit : sfHighLimit, saLimitAllow);
saLowLimit = !bHigh ? saLimitAllow : sleRippleState->getFieldAmount (sfLowLimit);
saHighLimit = bHigh ? saLimitAllow : sleRippleState->getFieldAmount (sfHighLimit);
//
// Quality in
//
if (!bQualityIn)
{
// Not setting. Just get it.
uLowQualityIn = sleRippleState->getFieldU32 (sfLowQualityIn);
uHighQualityIn = sleRippleState->getFieldU32 (sfHighQualityIn);
}
else if (uQualityIn)
{
// Setting.
sleRippleState->setFieldU32 (!bHigh ? sfLowQualityIn : sfHighQualityIn, uQualityIn);
uLowQualityIn = !bHigh ? uQualityIn : sleRippleState->getFieldU32 (sfLowQualityIn);
uHighQualityIn = bHigh ? uQualityIn : sleRippleState->getFieldU32 (sfHighQualityIn);
}
else
{
// Clearing.
sleRippleState->makeFieldAbsent (!bHigh ? sfLowQualityIn : sfHighQualityIn);
uLowQualityIn = !bHigh ? 0 : sleRippleState->getFieldU32 (sfLowQualityIn);
uHighQualityIn = bHigh ? 0 : sleRippleState->getFieldU32 (sfHighQualityIn);
}
if (QUALITY_ONE == uLowQualityIn) uLowQualityIn = 0;
if (QUALITY_ONE == uHighQualityIn) uHighQualityIn = 0;
//
// Quality out
//
if (!bQualityOut)
{
// Not setting. Just get it.
uLowQualityOut = sleRippleState->getFieldU32 (sfLowQualityOut);
uHighQualityOut = sleRippleState->getFieldU32 (sfHighQualityOut);
}
else if (uQualityOut)
{
// Setting.
sleRippleState->setFieldU32 (!bHigh ? sfLowQualityOut : sfHighQualityOut, uQualityOut);
uLowQualityOut = !bHigh ? uQualityOut : sleRippleState->getFieldU32 (sfLowQualityOut);
uHighQualityOut = bHigh ? uQualityOut : sleRippleState->getFieldU32 (sfHighQualityOut);
}
else
{
// Clearing.
sleRippleState->makeFieldAbsent (!bHigh ? sfLowQualityOut : sfHighQualityOut);
uLowQualityOut = !bHigh ? 0 : sleRippleState->getFieldU32 (sfLowQualityOut);
uHighQualityOut = bHigh ? 0 : sleRippleState->getFieldU32 (sfHighQualityOut);
}
const uint32 uFlagsIn = sleRippleState->getFieldU32 (sfFlags);
uint32 uFlagsOut = uFlagsIn;
if (bSetNoRipple && !bClearNoRipple && (bHigh ? saHighBalance : saLowBalance).isGEZero())
{
uFlagsOut |= (bHigh ? lsfHighNoRipple : lsfLowNoRipple);
}
else if (bClearNoRipple && !bSetNoRipple)
{
uFlagsOut &= ~(bHigh ? lsfHighNoRipple : lsfLowNoRipple);
}
if (QUALITY_ONE == uLowQualityOut) uLowQualityOut = 0;
if (QUALITY_ONE == uHighQualityOut) uHighQualityOut = 0;
const bool bLowReserveSet = uLowQualityIn || uLowQualityOut ||
isSetBit (uFlagsOut, lsfLowNoRipple) ||
!!saLowLimit || saLowBalance.isPositive ();
const bool bLowReserveClear = !bLowReserveSet;
const bool bHighReserveSet = uHighQualityIn || uHighQualityOut ||
isSetBit (uFlagsOut, lsfHighNoRipple) ||
!!saHighLimit || saHighBalance.isPositive ();
const bool bHighReserveClear = !bHighReserveSet;
const bool bDefault = bLowReserveClear && bHighReserveClear;
const bool bLowReserved = isSetBit (uFlagsIn, lsfLowReserve);
const bool bHighReserved = isSetBit (uFlagsIn, lsfHighReserve);
bool bReserveIncrease = false;
if (bSetAuth)
{
uFlagsOut |= (bHigh ? lsfHighAuth : lsfLowAuth);
}
if (bLowReserveSet && !bLowReserved)
{
// Set reserve for low account.
mEngine->getNodes ().ownerCountAdjust (uLowAccountID, 1, sleLowAccount);
uFlagsOut |= lsfLowReserve;
if (!bHigh)
bReserveIncrease = true;
}
if (bLowReserveClear && bLowReserved)
{
// Clear reserve for low account.
mEngine->getNodes ().ownerCountAdjust (uLowAccountID, -1, sleLowAccount);
uFlagsOut &= ~lsfLowReserve;
}
if (bHighReserveSet && !bHighReserved)
{
// Set reserve for high account.
mEngine->getNodes ().ownerCountAdjust (uHighAccountID, 1, sleHighAccount);
uFlagsOut |= lsfHighReserve;
if (bHigh)
bReserveIncrease = true;
}
if (bHighReserveClear && bHighReserved)
{
// Clear reserve for high account.
mEngine->getNodes ().ownerCountAdjust (uHighAccountID, -1, sleHighAccount);
uFlagsOut &= ~lsfHighReserve;
}
if (uFlagsIn != uFlagsOut)
sleRippleState->setFieldU32 (sfFlags, uFlagsOut);
if (bDefault || CURRENCY_BAD == uCurrencyID)
{
// Delete.
terResult = mEngine->getNodes ().trustDelete (sleRippleState, uLowAccountID, uHighAccountID);
}
else if (bReserveIncrease
&& mPriorBalance.getNValue () < uReserveCreate) // Reserve is not scaled by load.
{
WriteLog (lsINFO, TrustSetTransactor) << "doTrustSet: Delay transaction: Insufficent reserve to add trust line.";
// Another transaction could provide XRP to the account and then this transaction would succeed.
terResult = tecINSUF_RESERVE_LINE;
}
else
{
mEngine->entryModify (sleRippleState);
WriteLog (lsINFO, TrustSetTransactor) << "doTrustSet: Modify ripple line";
}
}
// Line does not exist.
else if (!saLimitAmount // Setting default limit.
&& (!bQualityIn || !uQualityIn) // Not setting quality in or setting default quality in.
&& (!bQualityOut || !uQualityOut)) // Not setting quality out or setting default quality out.
{
WriteLog (lsINFO, TrustSetTransactor) << "doTrustSet: Redundant: Setting non-existent ripple line to defaults.";
return tecNO_LINE_REDUNDANT;
}
else if (mPriorBalance.getNValue () < uReserveCreate) // Reserve is not scaled by load.
{
WriteLog (lsINFO, TrustSetTransactor) << "doTrustSet: Delay transaction: Line does not exist. Insufficent reserve to create line.";
// Another transaction could create the account and then this transaction would succeed.
terResult = tecNO_LINE_INSUF_RESERVE;
}
else if (CURRENCY_BAD == uCurrencyID)
{
terResult = temBAD_CURRENCY;
}
else
{
STAmount saBalance = STAmount (uCurrencyID, ACCOUNT_ONE); // Zero balance in currency.
WriteLog (lsINFO, TrustSetTransactor) << "doTrustSet: Creating ripple line: "
<< Ledger::getRippleStateIndex (mTxnAccountID, uDstAccountID, uCurrencyID).ToString ();
// Create a new ripple line.
terResult = mEngine->getNodes ().trustCreate (
bHigh,
mTxnAccountID,
uDstAccountID,
Ledger::getRippleStateIndex (mTxnAccountID, uDstAccountID, uCurrencyID),
mTxnAccount,
bSetAuth,
bSetNoRipple && !bClearNoRipple,
saBalance,
saLimitAllow, // Limit for who is being charged.
uQualityIn,
uQualityOut);
}
WriteLog (lsINFO, TrustSetTransactor) << "doTrustSet<";
return terResult;
}
// --> strIdent: public key, account ID, or regular seed.
// --> bStrict: Only allow account id or public key.
// <-- bIndex: true if iIndex > 0 and used the index.
Json::Value accountFromString (Ledger::ref lrLedger, RippleAddress& naAccount,
bool& bIndex, const std::string& strIdent,
const int iIndex, const bool bStrict, NetworkOPs& netOps)
{
RippleAddress naSeed;
if (naAccount.setAccountPublic (strIdent) || naAccount.setAccountID (strIdent))
{
// Got the account.
bIndex = false;
}
else if (bStrict)
{
return naAccount.setAccountID (strIdent, Base58::getBitcoinAlphabet ())
? rpcError (rpcACT_BITCOIN)
: rpcError (rpcACT_MALFORMED);
}
// Must be a seed.
else if (!naSeed.setSeedGeneric (strIdent))
{
return rpcError (rpcBAD_SEED);
}
else
{
// We allow the use of the seeds to access #0.
// This is poor practice and merely for debuging convenience.
RippleAddress naRegular0Public;
RippleAddress naRegular0Private;
RippleAddress naGenerator = RippleAddress::createGeneratorPublic (naSeed);
naRegular0Public.setAccountPublic (naGenerator, 0);
naRegular0Private.setAccountPrivate (naGenerator, naSeed, 0);
// Account uGeneratorID = naRegular0Public.getAccountID();
SLE::pointer sleGen = netOps.getGenerator (lrLedger, naRegular0Public.getAccountID ());
if (!sleGen)
{
// Didn't find a generator map, assume it is a master generator.
}
else
{
// Found master public key.
Blob vucCipher = sleGen->getFieldVL (sfGenerator);
Blob vucMasterGenerator = naRegular0Private.accountPrivateDecrypt (naRegular0Public, vucCipher);
if (vucMasterGenerator.empty ())
{
rpcError (rpcNO_GEN_DECRYPT);
}
naGenerator.setGenerator (vucMasterGenerator);
}
bIndex = !iIndex;
naAccount.setAccountPublic (naGenerator, iIndex);
}
return Json::Value (Json::objectValue);
}
bool TransactionEngine::checkInvariants (TER result, const SerializedTransaction& txn, TransactionEngineParams params)
{
#if 0
uint32 txnSeq = txn.getFieldU32 (sfSequence);
LedgerEntryAction leaAction;
uint256 srcActId = Ledger::getAccountRootIndex (txn.getFieldAccount (sfAccount));
SLE::pointer origSrcAct = mLedger->getSLE (srcActId);
SLE::pointer newSrcAct = mNodes.getEntry (srcActId, leaAction);
if (!newSrcAct || !origSrcAct)
{
WriteLog (lsFATAL, TransactionEngine) << "Transaction created or destroyed its issuing account";
assert (false);
return tefINTERNAL;
}
if ((newSrcAct->getFieldU32 (sfSequence) != (txnSeq + 1)) ||
(origSrcAct->getFieldU32 (sfSequence) != txnSeq))
{
WriteLog (lsFATAL, TransactionEngine) << "Transaction mangles sequence numbers";
WriteLog (lsFATAL, TransactionEngine) << "t:" << txnSeq << " o: " << origSrcAct->getFieldU32 (sfSequence)
<< " n: " << newSrcAct->getFieldU32 (sfSequence);
assert (false);
return tefINTERNAL;
}
int64 xrpChange = txn.getFieldAmount (sfFee).getSNValue ();
for (LedgerEntrySet::const_iterator it = mNodes.begin (), end = mNodes.end (); it != end; ++it)
{
const LedgerEntrySetEntry& entry = it->second;
if (entry.mAction == taaMODIFY)
{
#if 0
if (entry.mEntry->getType () == ltRIPPLE_STATE)
{
// if this transaction pushes a ripple state over its limit, make sure it also modifies
// an offer placed by that same user
}
#endif
if (entry.mEntry->getType () == ltACCOUNT_ROOT)
{
// account modified
xrpChange += entry.mEntry->getFieldAmount (sfBalance).getSNValue ();
xrpChange -= mLedger->getSLE (it->first)->getFieldAmount (sfBalance).getSNValue ();
}
}
else if (entry.mAction == taaCREATE)
{
if (entry.mEntry->getType () == ltRIPPLE_STATE)
{
if (entry.mEntry->getFieldAmount (sfLowLimit).getIssuer () ==
entry.mEntry->getFieldAmount (sfHighLimit).getIssuer ())
{
WriteLog (lsFATAL, TransactionEngine) << "Ripple line to self";
assert (false);
return tefINTERNAL;
}
}
if (entry.mEntry->getType () == ltACCOUNT_ROOT) // account created
xrpChange += entry.mEntry->getFieldAmount (sfBalance).getSNValue ();
}
}
if (xrpChange != 0)
{
WriteLog (lsFATAL, TransactionEngine) << "Transaction creates/destroys XRP";
assert (false);
return tefINTERNAL;
}
#endif
return true;
}
