std::unique_ptr <Transactor> make_CreateOffer (
SerializedTransaction const& txn,
TransactionEngineParams params,
TransactionEngine* engine)
{
#if RIPPLE_ENABLE_AUTOBRIDGING
STAmount const& amount_in = txn.getFieldAmount (sfTakerPays);
STAmount const& amount_out = txn.getFieldAmount (sfTakerGets);
// Autobridging is only in effect when an offer does not involve XRP
if (!amount_in.isNative() && !amount_out.isNative ())
return std::make_unique <CreateOfferBridged> (txn, params, engine);
#endif
return std::make_unique <CreateOfferDirect> (txn, params, engine);
}
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;
}