STTx
getPaymentTxWithPath(TestAccount& from, TestAccount const& to,
std::string const& currency, std::string const& amount,
Ledger::pointer const& ledger, bool sign)
{
auto amountJson = Amount(std::stod(amount), currency, to).getJson();
Json::Value tx_json = getPaymentJson(from, to, amountJson);
// Find path. Note that the sign command can do this transparently
// with the "build_path" field, but we don't have that here.
auto cache = std::make_shared<RippleLineCache>(ledger);
STPathSet pathSet;
STPath fullLiquidityPath;
auto stDstAmount = amountFromJson(sfGeneric, amountJson);
Issue srcIssue = Issue(stDstAmount.getCurrency(), from.pk.getAccountID());
auto found = findPathsForOneIssuer(cache, from.pk.getAccountID(), to.pk.getAccountID(),
srcIssue, stDstAmount, 7, 4, pathSet, fullLiquidityPath);
if (!found)
throw std::runtime_error(
"!found");
if (pathSet.isDefault())
throw std::runtime_error(
"pathSet.isDefault()");
tx_json[jss::Paths] = pathSet.getJson(0);
return parseTransaction(from, tx_json, sign);
}
void
stpathset_append(STPathSet& st,
STPath const& p, Args const&... args)
{
st.push_back(p);
stpathset_append(st, args...);
}
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 doApply () override
{
// Ripple 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 & tfNoRippleDirect);
bool const bPaths = mTxn.isFieldPresent (sfPaths);
bool const bMax = mTxn.isFieldPresent (sfSendMax);
Account const uDstAccountID (mTxn.getFieldAccount160 (sfDestination));
STAmount const saDstAmount (mTxn.getFieldAmount (sfAmount));
STAmount maxSourceAmount;
if (bMax)
maxSourceAmount = mTxn.getFieldAmount (sfSendMax);
else if (saDstAmount.isNative ())
maxSourceAmount = saDstAmount;
else
maxSourceAmount = STAmount (
{saDstAmount.getCurrency (), mTxnAccountID},
saDstAmount.mantissa(), saDstAmount.exponent (),
saDstAmount < zero);
auto const& uSrcCurrency = maxSourceAmount.getCurrency ();
auto const& uDstCurrency = saDstAmount.getCurrency ();
// isZero() is XRP. FIX!
bool const bXRPDirect = uSrcCurrency.isZero () && uDstCurrency.isZero ();
m_journal.trace <<
"maxSourceAmount=" << maxSourceAmount.getFullText () <<
" saDstAmount=" << saDstAmount.getFullText ();
if (!isLegalNet (saDstAmount) || !isLegalNet (maxSourceAmount))
return temBAD_AMOUNT;
if (uTxFlags & tfPaymentMask)
{
m_journal.trace <<
"Malformed transaction: Invalid flags set.";
return temINVALID_FLAG;
}
else if (!uDstAccountID)
{
m_journal.trace <<
"Malformed transaction: Payment destination account not specified.";
return temDST_NEEDED;
}
else if (bMax && maxSourceAmount <= zero)
{
m_journal.trace <<
"Malformed transaction: bad max amount: " << maxSourceAmount.getFullText ();
return temBAD_AMOUNT;
}
else if (saDstAmount <= zero)
{
m_journal.trace <<
"Malformed transaction: bad dst amount: " << saDstAmount.getFullText ();
return temBAD_AMOUNT;
}
else if (badCurrency() == uSrcCurrency || badCurrency() == uDstCurrency)
{
m_journal.trace <<
"Malformed transaction: Bad currency.";
return temBAD_CURRENCY;
}
else if (mTxnAccountID == uDstAccountID && uSrcCurrency == uDstCurrency && !bPaths)
{
// You're signing yourself a payment.
// If bPaths is true, you might be trying some arbitrage.
m_journal.trace <<
"Malformed transaction: Redundant transaction:" <<
" src=" << to_string (mTxnAccountID) <<
" dst=" << to_string (uDstAccountID) <<
" src_cur=" << to_string (uSrcCurrency) <<
" dst_cur=" << to_string (uDstCurrency);
return temREDUNDANT;
}
else if (bMax && maxSourceAmount == saDstAmount &&
maxSourceAmount.getCurrency () == saDstAmount.getCurrency ())
{
// Consistent but redundant transaction.
m_journal.trace <<
"Malformed transaction: Redundant SendMax.";
return temREDUNDANT_SEND_MAX;
}
else if (bXRPDirect && bMax)
{
// Consistent but redundant transaction.
m_journal.trace <<
"Malformed transaction: SendMax specified for XRP to XRP.";
return temBAD_SEND_XRP_MAX;
}
else if (bXRPDirect && bPaths)
{
// XRP is sent without paths.
m_journal.trace <<
"Malformed transaction: Paths specified for XRP to XRP.";
return temBAD_SEND_XRP_PATHS;
}
else if (bXRPDirect && partialPaymentAllowed)
{
// Consistent but redundant transaction.
m_journal.trace <<
"Malformed transaction: Partial payment specified for XRP to XRP.";
return temBAD_SEND_XRP_PARTIAL;
}
else if (bXRPDirect && limitQuality)
{
// Consistent but redundant transaction.
m_journal.trace <<
"Malformed transaction: Limit quality specified for XRP to XRP.";
return temBAD_SEND_XRP_LIMIT;
}
else if (bXRPDirect && !defaultPathsAllowed)
{
// Consistent but redundant transaction.
m_journal.trace <<
"Malformed transaction: No ripple direct specified for XRP to XRP.";
return temBAD_SEND_XRP_NO_DIRECT;
}
//
// Open a ledger for editing.
auto const index = getAccountRootIndex (uDstAccountID);
SLE::pointer sleDst (mEngine->entryCache (ltACCOUNT_ROOT, index));
if (!sleDst)
{
// Destination account does not exist.
if (!saDstAmount.isNative ())
{
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.getNValue () < 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_XRP;
}
// Create the account.
auto const newIndex = getAccountRootIndex (uDstAccountID);
sleDst = mEngine->entryCreate (ltACCOUNT_ROOT, newIndex);
sleDst->setFieldAccount (sfAccount, uDstAccountID);
sleDst->setFieldU32 (sfSequence, 1);
}
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 tefDST_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->entryModify (sleDst);
}
TER terResult;
bool const bRipple = bPaths || bMax || !saDstAmount.isNative ();
// XXX Should bMax be sufficient to imply ripple?
if (bRipple)
{
// Ripple payment with at least one intermediate step and uses
// transitive balances.
// Copy paths into an editable class.
STPathSet spsPaths = mTxn.getFieldPathSet (sfPaths);
try
{
path::RippleCalc::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
{
auto rc = path::RippleCalc::rippleCalculate (
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 XRP payment.
// uOwnerCount is the number of entries in this legder for this account
// that require a reserve.
std::uint32_t const uOwnerCount (mTxnAccount->getFieldU32 (sfOwnerCount));
// This is the total reserve in drops.
// TODO(tom): there should be a class for this.
std::uint64_t const uReserve (mEngine->getLedger ()->getReserve (uOwnerCount));
// mPriorBalance is the balance on the sending account BEFORE the fees were charged.
//
// Make sure have enough reserve to send. Allow final spend to use
// reserve for fee.
auto const mmm = std::max(uReserve, mTxn.getTransactionFee ().getNValue ());
if (mPriorBalance < saDstAmount + mmm)
{
// Vote no.
// However, transaction might succeed, if applied in a different order.
m_journal.trace << "Delay transaction: Insufficient funds: " <<
" " << mPriorBalance.getText () <<
" / " << (saDstAmount + uReserve).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;
}
// This interface is deprecated.
Json::Value doRipplePathFind (RPC::Context& context)
{
RPC::LegacyPathFind lpf (context.role == Role::ADMIN);
if (!lpf.isOk ())
return rpcError (rpcTOO_BUSY);
context.loadType = Resource::feeHighBurdenRPC;
RippleAddress raSrc;
RippleAddress raDst;
STAmount saDstAmount;
Ledger::pointer lpLedger;
Json::Value jvResult;
if (getConfig().RUN_STANDALONE ||
context.params.isMember(jss::ledger) ||
context.params.isMember(jss::ledger_index) ||
context.params.isMember(jss::ledger_hash))
{
// The caller specified a ledger
jvResult = RPC::lookupLedger (
context.params, lpLedger, context.netOps);
if (!lpLedger)
return jvResult;
}
if (!context.params.isMember ("source_account"))
{
jvResult = rpcError (rpcSRC_ACT_MISSING);
}
else if (!context.params["source_account"].isString ()
|| !raSrc.setAccountID (
context.params["source_account"].asString ()))
{
jvResult = rpcError (rpcSRC_ACT_MALFORMED);
}
else if (!context.params.isMember ("destination_account"))
{
jvResult = rpcError (rpcDST_ACT_MISSING);
}
else if (!context.params["destination_account"].isString ()
|| !raDst.setAccountID (
context.params["destination_account"].asString ()))
{
jvResult = rpcError (rpcDST_ACT_MALFORMED);
}
else if (
// Parse saDstAmount.
!context.params.isMember ("destination_amount")
|| ! amountFromJsonNoThrow(saDstAmount, context.params["destination_amount"])
|| saDstAmount <= zero
|| (!isXRP(saDstAmount.getCurrency ())
&& (!saDstAmount.getIssuer () ||
noAccount() == saDstAmount.getIssuer ())))
{
WriteLog (lsINFO, RPCHandler) << "Bad destination_amount.";
jvResult = rpcError (rpcINVALID_PARAMS);
}
else if (
// Checks on source_currencies.
context.params.isMember ("source_currencies")
&& (!context.params["source_currencies"].isArray ()
|| !context.params["source_currencies"].size ())
// Don't allow empty currencies.
)
{
WriteLog (lsINFO, RPCHandler) << "Bad source_currencies.";
jvResult = rpcError (rpcINVALID_PARAMS);
}
else
{
context.loadType = Resource::feeHighBurdenRPC;
RippleLineCache::pointer cache;
if (lpLedger)
{
// The caller specified a ledger
lpLedger = std::make_shared<Ledger> (std::ref (*lpLedger), false);
cache = std::make_shared<RippleLineCache>(lpLedger);
}
else
{
// The closed ledger is recent and any nodes made resident
// have the best chance to persist
lpLedger = context.netOps.getClosedLedger();
cache = getApp().getPathRequests().getLineCache(lpLedger, false);
}
Json::Value jvSrcCurrencies;
if (context.params.isMember ("source_currencies"))
{
jvSrcCurrencies = context.params["source_currencies"];
}
else
{
auto currencies = accountSourceCurrencies (raSrc, cache, true);
jvSrcCurrencies = Json::Value (Json::arrayValue);
for (auto const& uCurrency: currencies)
{
Json::Value jvCurrency (Json::objectValue);
jvCurrency["currency"] = to_string(uCurrency);
jvSrcCurrencies.append (jvCurrency);
}
}
// Fill in currencies destination will accept
Json::Value jvDestCur (Json::arrayValue);
// TODO(tom): this could be optimized the same way that
// PathRequest::doUpdate() is - if we don't obsolete this code first.
auto usDestCurrID = accountDestCurrencies (raDst, cache, true);
for (auto const& uCurrency: usDestCurrID)
jvDestCur.append (to_string (uCurrency));
jvResult["destination_currencies"] = jvDestCur;
jvResult["destination_account"] = raDst.humanAccountID ();
Json::Value jvArray (Json::arrayValue);
int level = getConfig().PATH_SEARCH_OLD;
if ((getConfig().PATH_SEARCH_MAX > level)
&& !getApp().getFeeTrack().isLoadedLocal())
{
++level;
}
if (context.params.isMember("search_depth")
&& context.params["search_depth"].isIntegral())
{
int rLev = context.params["search_depth"].asInt ();
if ((rLev < level) || (context.role == Role::ADMIN))
level = rLev;
}
FindPaths fp (
cache,
raSrc.getAccountID(),
raDst.getAccountID(),
saDstAmount,
level,
4); // max paths
for (unsigned int i = 0; i != jvSrcCurrencies.size (); ++i)
{
Json::Value jvSource = jvSrcCurrencies[i];
Currency uSrcCurrencyID;
Account uSrcIssuerID;
if (!jvSource.isObject ())
return rpcError (rpcINVALID_PARAMS);
// Parse mandatory currency.
if (!jvSource.isMember ("currency")
|| !to_currency (
uSrcCurrencyID, jvSource["currency"].asString ()))
{
WriteLog (lsINFO, RPCHandler) << "Bad currency.";
return rpcError (rpcSRC_CUR_MALFORMED);
}
if (uSrcCurrencyID.isNonZero ())
uSrcIssuerID = raSrc.getAccountID ();
// Parse optional issuer.
if (jvSource.isMember ("issuer") &&
((!jvSource["issuer"].isString () ||
!to_issuer (uSrcIssuerID, jvSource["issuer"].asString ())) ||
(uSrcIssuerID.isZero () != uSrcCurrencyID.isZero ()) ||
(noAccount() == uSrcIssuerID)))
{
WriteLog (lsINFO, RPCHandler) << "Bad issuer.";
return rpcError (rpcSRC_ISR_MALFORMED);
}
STPathSet spsComputed;
if (context.params.isMember("paths"))
{
Json::Value pathSet = Json::objectValue;
pathSet["Paths"] = context.params["paths"];
STParsedJSONObject paths ("pathSet", pathSet);
if (paths.object.get() == nullptr)
return paths.error;
else
{
spsComputed = paths.object.get()->getFieldPathSet (sfPaths);
WriteLog (lsTRACE, RPCHandler) << "ripple_path_find: Paths: " << spsComputed.getJson (0);
}
}
STPath fullLiquidityPath;
auto valid = fp.findPathsForIssue (
{uSrcCurrencyID, uSrcIssuerID},
spsComputed,
fullLiquidityPath);
if (!valid)
{
WriteLog (lsWARNING, RPCHandler)
<< "ripple_path_find: No paths found.";
}
else
{
auto& issuer =
isXRP (uSrcIssuerID) ?
isXRP (uSrcCurrencyID) ? // Default to source account.
xrpAccount() :
Account (raSrc.getAccountID ())
: uSrcIssuerID; // Use specifed issuer.
STAmount saMaxAmount ({uSrcCurrencyID, issuer}, 1);
saMaxAmount.negate ();
LedgerEntrySet lesSandbox (lpLedger, tapNONE);
auto rc = path::RippleCalc::rippleCalculate (
lesSandbox,
saMaxAmount, // --> Amount to send is unlimited
// to get an estimate.
saDstAmount, // --> Amount to deliver.
raDst.getAccountID (), // --> Account to deliver to.
raSrc.getAccountID (), // --> Account sending from.
spsComputed); // --> Path set.
WriteLog (lsWARNING, RPCHandler)
<< "ripple_path_find:"
<< " saMaxAmount=" << saMaxAmount
<< " saDstAmount=" << saDstAmount
<< " saMaxAmountAct=" << rc.actualAmountIn
<< " saDstAmountAct=" << rc.actualAmountOut;
if (fullLiquidityPath.size() > 0 &&
(rc.result() == terNO_LINE || rc.result() == tecPATH_PARTIAL))
{
WriteLog (lsDEBUG, PathRequest)
<< "Trying with an extra path element";
spsComputed.push_back (fullLiquidityPath);
lesSandbox.clear ();
rc = path::RippleCalc::rippleCalculate (
lesSandbox,
saMaxAmount, // --> Amount to send is unlimited
// to get an estimate.
saDstAmount, // --> Amount to deliver.
raDst.getAccountID (), // --> Account to deliver to.
raSrc.getAccountID (), // --> Account sending from.
spsComputed); // --> Path set.
WriteLog (lsDEBUG, PathRequest)
<< "Extra path element gives "
<< transHuman (rc.result ());
}
if (rc.result () == tesSUCCESS)
{
Json::Value jvEntry (Json::objectValue);
STPathSet spsCanonical;
// Reuse the expanded as it would need to be calcuated
// anyway to produce the canonical. (At least unless we
// make a direct canonical.)
jvEntry["source_amount"] = rc.actualAmountIn.getJson (0);
jvEntry["paths_canonical"] = Json::arrayValue;
jvEntry["paths_computed"] = spsComputed.getJson (0);
jvArray.append (jvEntry);
}
else
{
std::string strToken;
std::string strHuman;
transResultInfo (rc.result (), strToken, strHuman);
WriteLog (lsDEBUG, RPCHandler)
<< "ripple_path_find: "
<< strToken << " "
<< strHuman << " "
<< spsComputed.getJson (0);
}
}
}
// Each alternative differs by source currency.
jvResult["alternatives"] = jvArray;
}
WriteLog (lsDEBUG, RPCHandler)
<< boost::str (boost::format ("ripple_path_find< %s")
% jvResult);
return jvResult;
}
bool STParsedJSON::parse (std::string const& json_name,
Json::Value const& json, SField::ref inName, int depth,
std::unique_ptr <STObject>& sub_object)
{
if (! json.isObject ())
{
error = not_an_object (json_name);
return false;
}
SField::ptr name (&inName);
boost::ptr_vector<SerializedType> data;
Json::Value::Members members (json.getMemberNames ());
for (Json::Value::Members::iterator it (members.begin ());
it != members.end (); ++it)
{
std::string const& fieldName = *it;
Json::Value const& value = json [fieldName];
SField::ref field = SField::getField (fieldName);
if (field == sfInvalid)
{
error = unknown_field (json_name, fieldName);
return false;
}
switch (field.fieldType)
{
case STI_UINT8:
try
{
if (value.isString ())
{
// VFALCO TODO wtf?
}
else if (value.isInt ())
{
if (value.asInt () < 0 || value.asInt () > 255)
{
error = out_of_range (json_name, fieldName);
return false;
}
data.push_back (new STUInt8 (field,
range_check_cast <unsigned char> (
value.asInt (), 0, 255)));
}
else if (value.isUInt ())
{
if (value.asUInt () > 255)
{
error = out_of_range (json_name, fieldName);
return false;
}
data.push_back (new STUInt8 (field,
range_check_cast <unsigned char> (
value.asUInt (), 0, 255)));
}
else
{
error = bad_type (json_name, fieldName);
return false;
}
}
catch (...)
{
error = invalid_data (json_name, fieldName);
return false;
}
break;
case STI_UINT16:
try
{
if (value.isString ())
{
std::string strValue = value.asString ();
if (! strValue.empty () &&
((strValue[0] < '0') || (strValue[0] > '9')))
{
if (field == sfTransactionType)
{
TxType const txType (TxFormats::getInstance()->
findTypeByName (strValue));
data.push_back (new STUInt16 (field,
static_cast <std::uint16_t> (txType)));
if (*name == sfGeneric)
name = &sfTransaction;
}
else if (field == sfLedgerEntryType)
{
LedgerEntryType const type (LedgerFormats::getInstance()->
findTypeByName (strValue));
data.push_back (new STUInt16 (field,
static_cast <std::uint16_t> (type)));
if (*name == sfGeneric)
name = &sfLedgerEntry;
}
else
{
error = invalid_data (json_name, fieldName);
return false;
}
}
else
{
data.push_back (new STUInt16 (field,
beast::lexicalCastThrow <std::uint16_t> (strValue)));
}
}
else if (value.isInt ())
{
data.push_back (new STUInt16 (field,
range_check_cast <std::uint16_t> (
value.asInt (), 0, 65535)));
}
else if (value.isUInt ())
{
data.push_back (new STUInt16 (field,
range_check_cast <std::uint16_t> (
value.asUInt (), 0, 65535)));
}
else
{
error = bad_type (json_name, fieldName);
return false;
}
}
catch (...)
{
error = invalid_data (json_name, fieldName);
return false;
}
break;
case STI_UINT32:
try
{
if (value.isString ())
{
data.push_back (new STUInt32 (field,
beast::lexicalCastThrow <std::uint32_t> (value.asString ())));
}
else if (value.isInt ())
{
data.push_back (new STUInt32 (field,
range_check_cast <std::uint32_t> (value.asInt (), 0u, 4294967295u)));
}
else if (value.isUInt ())
{
data.push_back (new STUInt32 (field,
static_cast <std::uint32_t> (value.asUInt ())));
}
else
{
error = bad_type (json_name, fieldName);
return false;
}
}
catch (...)
{
error = invalid_data (json_name, fieldName);
return false;
}
break;
case STI_UINT64:
try
{
if (value.isString ())
{
data.push_back (new STUInt64 (field,
uintFromHex (value.asString ())));
}
else if (value.isInt ())
{
data.push_back (new STUInt64 (field,
range_check_cast<std::uint64_t> (
value.asInt (), 0, 18446744073709551615ull)));
}
else if (value.isUInt ())
{
data.push_back (new STUInt64 (field,
static_cast <std::uint64_t> (value.asUInt ())));
}
else
{
error = bad_type (json_name, fieldName);
return false;
}
}
catch (...)
{
error = invalid_data (json_name, fieldName);
return false;
}
break;
case STI_HASH128:
try
{
if (value.isString ())
{
data.push_back (new STHash128 (field, value.asString ()));
}
else
{
error = bad_type (json_name, fieldName);
return false;
}
}
catch (...)
{
error = invalid_data (json_name, fieldName);
return false;
}
break;
case STI_HASH160:
try
{
if (value.isString ())
{
data.push_back (new STHash160 (field, value.asString ()));
}
else
{
error = bad_type (json_name, fieldName);
return false;
}
}
catch (...)
{
error = invalid_data (json_name, fieldName);
return false;
}
break;
case STI_HASH256:
try
{
if (value.isString ())
{
data.push_back (new STHash256 (field, value.asString ()));
}
else
{
error = bad_type (json_name, fieldName);
return false;
}
}
catch (...)
{
error = invalid_data (json_name, fieldName);
return false;
}
break;
case STI_VL:
if (! value.isString ())
{
error = bad_type (json_name, fieldName);
return false;
}
try
{
std::pair<Blob, bool> ret(strUnHex (value.asString ()));
if (!ret.second)
throw std::invalid_argument ("invalid data");
data.push_back (new STVariableLength (field, ret.first));
}
catch (...)
{
error = invalid_data (json_name, fieldName);
return false;
}
break;
case STI_AMOUNT:
try
{
data.push_back (new STAmount (field, value));
}
catch (...)
{
error = invalid_data (json_name, fieldName);
return false;
}
break;
case STI_VECTOR256:
if (! value.isArray ())
{
error = array_expected (json_name, fieldName);
return false;
}
try
{
data.push_back (new STVector256 (field));
STVector256* tail (dynamic_cast <STVector256*> (&data.back ()));
assert (tail);
for (Json::UInt i = 0; !json.isValidIndex (i); ++i)
{
uint256 s;
s.SetHex (json[i].asString ());
tail->addValue (s);
}
}
catch (...)
{
error = invalid_data (json_name, fieldName);
return false;
}
break;
case STI_PATHSET:
if (!value.isArray ())
{
error = array_expected (json_name, fieldName);
return false;
}
try
{
data.push_back (new STPathSet (field));
STPathSet* tail = dynamic_cast <STPathSet*> (&data.back ());
assert (tail);
for (Json::UInt i = 0; value.isValidIndex (i); ++i)
{
STPath p;
if (!value[i].isArray ())
{
std::stringstream ss;
ss << fieldName << "[" << i << "]";
error = array_expected (json_name, ss.str ());
return false;
}
for (Json::UInt j = 0; value[i].isValidIndex (j); ++j)
{
std::stringstream ss;
ss << fieldName << "[" << i << "][" << j << "]";
std::string const element_name (
json_name + "." + ss.str());
// each element in this path has some combination of account,
// currency, or issuer
Json::Value pathEl = value[i][j];
if (!pathEl.isObject ())
{
error = not_an_object (element_name);
return false;
}
const Json::Value& account = pathEl["account"];
const Json::Value& currency = pathEl["currency"];
const Json::Value& issuer = pathEl["issuer"];
bool hasCurrency = false;
uint160 uAccount, uCurrency, uIssuer;
if (! account.isNull ())
{
// human account id
if (! account.isString ())
{
error = string_expected (element_name, "account");
return false;
}
std::string const strValue (account.asString ());
if (value.size () == 40) // 160-bit hex account value
uAccount.SetHex (strValue);
{
RippleAddress a;
if (! a.setAccountID (strValue))
{
error = invalid_data (element_name, "account");
return false;
}
uAccount = a.getAccountID ();
}
}
if (!currency.isNull ())
{
// human currency
if (!currency.isString ())
{
error = string_expected (element_name, "currency");
return false;
}
hasCurrency = true;
if (currency.asString ().size () == 40)
{
uCurrency.SetHex (currency.asString ());
}
else if (!STAmount::currencyFromString (
uCurrency, currency.asString ()))
{
error = invalid_data (element_name, "currency");
return false;
}
}
if (!issuer.isNull ())
{
// human account id
if (!issuer.isString ())
{
error = string_expected (element_name, "issuer");
return false;
}
if (issuer.asString ().size () == 40)
{
uIssuer.SetHex (issuer.asString ());
}
else
{
RippleAddress a;
if (!a.setAccountID (issuer.asString ()))
{
error = invalid_data (element_name, "issuer");
return false;
}
uIssuer = a.getAccountID ();
}
}
p.addElement (STPathElement (uAccount, uCurrency, uIssuer, hasCurrency));
}
tail->addPath (p);
}
}
catch (...)
{
error = invalid_data (json_name, fieldName);
return false;
}
break;
case STI_ACCOUNT:
{
if (! value.isString ())
{
error = bad_type (json_name, fieldName);
return false;
}
std::string strValue = value.asString ();
try
{
if (value.size () == 40) // 160-bit hex account value
{
uint160 v;
v.SetHex (strValue);
data.push_back (new STAccount (field, v));
}
else
{
// ripple address
RippleAddress a;
if (!a.setAccountID (strValue))
{
error = invalid_data (json_name, fieldName);
return false;
}
data.push_back (new STAccount (field, a.getAccountID ()));
}
}
catch (...)
{
error = invalid_data (json_name, fieldName);
return false;
}
}
break;
case STI_OBJECT:
case STI_TRANSACTION:
case STI_LEDGERENTRY:
case STI_VALIDATION:
if (! value.isObject ())
{
error = not_an_object (json_name, fieldName);
return false;
}
if (depth > 64)
{
error = too_deep (json_name, fieldName);
return false;
}
try
{
std::unique_ptr <STObject> sub_object_;
bool const success (parse (json_name + "." + fieldName,
value, field, depth + 1, sub_object_));
if (! success)
return false;
data.push_back (sub_object_.release ());
}
catch (...)
{
error = invalid_data (json_name, fieldName);
return false;
}
break;
case STI_ARRAY:
if (! value.isArray ())
{
error = array_expected (json_name, fieldName);
return false;
}
try
{
data.push_back (new STArray (field));
STArray* tail = dynamic_cast<STArray*> (&data.back ());
assert (tail);
for (Json::UInt i = 0; value.isValidIndex (i); ++i)
{
bool const isObject (value[i].isObject());
bool const singleKey (isObject
? value [i].size() == 1
: true);
if (!isObject || !singleKey)
{
std::stringstream ss;
ss << json_name << "." << fieldName << "[" << i << "]";
error = singleton_expected (ss.str ());
return false;
}
// TODO: There doesn't seem to be a nice way to get just the
// first/only key in an object without copying all keys into
// a vector
std::string const objectName (value[i].getMemberNames()[0]);;
SField::ref nameField (SField::getField(objectName));
if (nameField == sfInvalid)
{
error = unknown_field (json_name, objectName);
return false;
}
Json::Value const objectFields (value[i][objectName]);
std::unique_ptr <STObject> sub_object_;
{
std::stringstream ss;
ss << json_name << "." << fieldName <<
"[" << i << "]." << objectName;
bool const success (parse (ss.str (), objectFields,
nameField, depth + 1, sub_object_));
if (! success)
return false;
}
tail->push_back (*sub_object_);
}
}
catch (...)
{
error = invalid_data (json_name, fieldName);
return false;
}
break;
default:
error = bad_type (json_name, fieldName);
return false;
}
}
sub_object.reset (new STObject (*name, data));
return true;
}
TER PaymentTransactor::doApply ()
{
// Ripple if source or destination is non-native or if there are paths.
std::uint32_t const uTxFlags = mTxn.getFlags ();
//bool const bPartialPayment = is_bit_set(uTxFlags, tfPartialPayment);
bool const bLimitQuality = is_bit_set (uTxFlags, tfLimitQuality);
bool const bNoRippleDirect = is_bit_set (uTxFlags, tfNoRippleDirect);
bool const bPaths = mTxn.isFieldPresent (sfPaths);
bool const bMax = mTxn.isFieldPresent (sfSendMax);
uint160 const uDstAccountID = mTxn.getFieldAccount160 (sfDestination);
STAmount const saDstAmount = mTxn.getFieldAmount (sfAmount);
STAmount const saMaxAmount = bMax
? mTxn.getFieldAmount (sfSendMax)
: saDstAmount.isNative ()
? saDstAmount
: STAmount (saDstAmount.getCurrency (),
mTxnAccountID,
saDstAmount.getMantissa (),
saDstAmount.getExponent (),
saDstAmount < zero);
uint160 const uSrcCurrency = saMaxAmount.getCurrency ();
uint160 const uDstCurrency = saDstAmount.getCurrency ();
bool const bSTRDirect = uSrcCurrency.isZero () && uDstCurrency.isZero ();
m_journal.trace <<
"saMaxAmount=" << saMaxAmount.getFullText () <<
" saDstAmount=" << saDstAmount.getFullText ();
if (!saDstAmount.isLegalNet () || !saMaxAmount.isLegalNet ())
return temBAD_AMOUNT;
if (uTxFlags & tfPaymentMask)
{
m_journal.trace <<
"Malformed transaction: Invalid flags set.";
return temINVALID_FLAG;
}
else if (!uDstAccountID)
{
m_journal.trace <<
"Malformed transaction: Payment destination account not specified.";
return temDST_NEEDED;
}
else if (bMax && saMaxAmount <= zero)
{
m_journal.trace <<
"Malformed transaction: bad max amount: " << saMaxAmount.getFullText ();
return temBAD_AMOUNT;
}
else if (saDstAmount <= zero)
{
m_journal.trace <<
"Malformed transaction: bad dst amount: " << saDstAmount.getFullText ();
return temBAD_AMOUNT;
}
else if (CURRENCY_BAD == uSrcCurrency || CURRENCY_BAD == uDstCurrency)
{
m_journal.trace <<
"Malformed transaction: Bad currency.";
return temBAD_CURRENCY;
}
else if (mTxnAccountID == uDstAccountID && uSrcCurrency == uDstCurrency && !bPaths)
{
m_journal.trace <<
"Malformed transaction: Redundant transaction:" <<
" src=" << to_string (mTxnAccountID) <<
" dst=" << to_string (uDstAccountID) <<
" src_cur=" << to_string (uSrcCurrency) <<
" dst_cur=" << to_string (uDstCurrency);
return temREDUNDANT;
}
else if (bMax && saMaxAmount == saDstAmount && saMaxAmount.getCurrency () == saDstAmount.getCurrency ())
{
m_journal.trace <<
"Malformed transaction: Redundant SendMax.";
return temREDUNDANT_SEND_MAX;
}
else if (bSTRDirect && bMax)
{
m_journal.trace <<
"Malformed transaction: SendMax specified for STR to STR.";
return temBAD_SEND_STR_MAX;
}
else if (bSTRDirect && bPaths)
{
m_journal.trace <<
"Malformed transaction: Paths specified for STR to STR.";
return temBAD_SEND_STR_PATHS;
}
else if (bSTRDirect && bLimitQuality)
{
m_journal.trace <<
"Malformed transaction: Limit quality specified for STR to STR.";
return temBAD_SEND_STR_LIMIT;
}
else if (bSTRDirect && bNoRippleDirect)
{
m_journal.trace <<
"Malformed transaction: No ripple direct specified for STR to STR.";
return temBAD_SEND_STR_NO_DIRECT;
}
SLE::pointer sleDst (mEngine->entryCache (
ltACCOUNT_ROOT, Ledger::getAccountRootIndex (uDstAccountID)));
if (!sleDst)
{
// Destination account does not exist.
if (!saDstAmount.isNative ())
{
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;
}
// Note: Reserve is not scaled by load.
else if (saDstAmount.getNValue () < mEngine->getLedger ()->getReserve (0))
{
m_journal.trace <<
"Delay transaction: Destination account does not exist. " <<
"Insufficient payment to create account.";
// Another transaction could create the account and then this
// transaction would succeed.
return tecNO_DST_INSUF_STR;
}
// Create the account.
sleDst = mEngine->entryCreate (
ltACCOUNT_ROOT, Ledger::getAccountRootIndex (uDstAccountID));
sleDst->setFieldAccount (sfAccount, uDstAccountID);
sleDst->setFieldU32 (sfSequence, 1);
}
else if ((sleDst->getFlags () & lsfRequireDestTag) && !mTxn.isFieldPresent (sfDestinationTag))
{
m_journal.trace <<
"Malformed transaction: DestinationTag required.";
return tefDST_TAG_NEEDED;
}
else
{
mEngine->entryModify (sleDst);
}
TER terResult;
// XXX Should bMax be sufficient to imply ripple?
bool const bRipple = bPaths || bMax || !saDstAmount.isNative ();
if (bRipple)
{
// Ripple payment
STPathSet spsPaths = mTxn.getFieldPathSet (sfPaths);
std::vector<PathState::pointer> vpsExpanded;
STAmount saMaxAmountAct;
STAmount saDstAmountAct;
try
{
bool const openLedger = is_bit_set (mParams, tapOPEN_LEDGER);
bool tooManyPaths = false;
if (spsPaths.size() > MAX_NUM_PATHS) tooManyPaths = true;
else
{
for (auto const& path : spsPaths)
{
if (path.size() > MAX_PATH_SIZE)
{
tooManyPaths = true;
break;
}
}
}
terResult = openLedger && tooManyPaths
? telBAD_PATH_COUNT // Too many paths for proposed ledger.
: RippleCalc::rippleCalc(
mEngine->view(),
saMaxAmountAct,
saDstAmountAct,
vpsExpanded,
saMaxAmount,
saDstAmount,
uDstAccountID,
mTxnAccountID,
spsPaths,
false,
bLimitQuality,
bNoRippleDirect, // Always compute for finalizing ledger.
false, // Not standalone, delete unfundeds.
is_bit_set(mParams, tapOPEN_LEDGER));
if (isTerRetry(terResult))
terResult = tecPATH_DRY;
if ((tesSUCCESS == terResult) && (saDstAmountAct != saDstAmount))
mEngine->view().setDeliveredAmount(saDstAmountAct);
}
catch (std::exception const& e)
{
m_journal.trace <<
"Caught throw: " << e.what ();
terResult = tefEXCEPTION;
}
}
else
{
// Direct STR payment.
std::uint32_t const uOwnerCount (mTxnAccount->getFieldU32 (sfOwnerCount));
std::uint64_t const uReserve (mEngine->getLedger ()->getReserve (uOwnerCount));
// Make sure have enough reserve to send. Allow final spend to use reserve for fee.
if (mPriorBalance < saDstAmount + std::max(uReserve, mTxn.getTransactionFee ().getNValue ()))
{
// Vote no. However, transaction might succeed, if applied in a different order.
m_journal.trace << "Delay transaction: Insufficient funds: " <<
" " << mPriorBalance.getText () <<
" / " << (saDstAmount + uReserve).getText () <<
" (" << uReserve << ")";
terResult = tecUNFUNDED_PAYMENT;
}
else
{
mTxnAccount->setFieldAmount (sfBalance, mSourceBalance - saDstAmount);
sleDst->setFieldAmount (sfBalance, sleDst->getFieldAmount (sfBalance) + saDstAmount);
terResult = tesSUCCESS;
}
}
std::string strToken;
std::string strHuman;
if (transResultInfo (terResult, strToken, strHuman))
{
m_journal.trace <<
strToken << ": " << strHuman;
}
else
{
assert (false);
}
return terResult;
}
static Json::Value signPayment(
Json::Value const& params,
Json::Value& tx_json,
RippleAddress const& raSrcAddressID,
RPCDetail::LedgerFacade& ledgerFacade,
Role role)
{
RippleAddress dstAccountID;
if (!tx_json.isMember ("Amount"))
return RPC::missing_field_error ("tx_json.Amount");
STAmount amount;
if (! amountFromJsonNoThrow (amount, tx_json ["Amount"]))
return RPC::invalid_field_error ("tx_json.Amount");
if (!tx_json.isMember ("Destination"))
return RPC::missing_field_error ("tx_json.Destination");
if (!dstAccountID.setAccountID (tx_json["Destination"].asString ()))
return RPC::invalid_field_error ("tx_json.Destination");
if (tx_json.isMember ("Paths") && params.isMember ("build_path"))
return RPC::make_error (rpcINVALID_PARAMS,
"Cannot specify both 'tx_json.Paths' and 'build_path'");
if (!tx_json.isMember ("Paths")
&& tx_json.isMember ("Amount")
&& params.isMember ("build_path"))
{
// Need a ripple path.
Currency uSrcCurrencyID;
Account uSrcIssuerID;
STAmount saSendMax;
if (tx_json.isMember ("SendMax"))
{
if (! amountFromJsonNoThrow (saSendMax, tx_json ["SendMax"]))
return RPC::invalid_field_error ("tx_json.SendMax");
}
else
{
// If no SendMax, default to Amount with sender as issuer.
saSendMax = amount;
saSendMax.setIssuer (raSrcAddressID.getAccountID ());
}
if (saSendMax.isNative () && amount.isNative ())
return RPC::make_error (rpcINVALID_PARAMS,
"Cannot build XRP to XRP paths.");
{
LegacyPathFind lpf (role == Role::ADMIN);
if (!lpf.isOk ())
return rpcError (rpcTOO_BUSY);
STPathSet spsPaths;
STPath fullLiquidityPath;
bool valid = ledgerFacade.findPathsForOneIssuer (
dstAccountID,
saSendMax.issue (),
amount,
getConfig ().PATH_SEARCH_OLD,
4, // iMaxPaths
spsPaths,
fullLiquidityPath);
if (!valid)
{
WriteLog (lsDEBUG, RPCHandler)
<< "transactionSign: build_path: No paths found.";
return rpcError (rpcNO_PATH);
}
WriteLog (lsDEBUG, RPCHandler)
<< "transactionSign: build_path: "
<< spsPaths.getJson (0);
if (!spsPaths.empty ())
tx_json["Paths"] = spsPaths.getJson (0);
}
}
return Json::Value();
}
std::pair<bool, Json::Value>
ripplePathFind(RippleLineCache::pointer const& cache,
RippleAddress const& raSrc, RippleAddress const& raDst,
STAmount const& saDstAmount, Ledger::pointer const& lpLedger,
Json::Value const& jvSrcCurrencies,
boost::optional<Json::Value> const& contextPaths, int const& level)
{
FindPaths fp(
cache,
raSrc.getAccountID(),
raDst.getAccountID(),
saDstAmount,
level,
4); // max paths
Json::Value jvArray(Json::arrayValue);
for (unsigned int i = 0; i != jvSrcCurrencies.size(); ++i)
{
Json::Value jvSource = jvSrcCurrencies[i];
Currency uSrcCurrencyID;
Account uSrcIssuerID;
if (!jvSource.isObject())
return std::make_pair(false, rpcError(rpcINVALID_PARAMS));
// Parse mandatory currency.
if (!jvSource.isMember(jss::currency)
|| !to_currency(
uSrcCurrencyID, jvSource[jss::currency].asString()))
{
WriteLog(lsINFO, RPCHandler) << "Bad currency.";
return std::make_pair(false, rpcError(rpcSRC_CUR_MALFORMED));
}
if (uSrcCurrencyID.isNonZero())
uSrcIssuerID = raSrc.getAccountID();
// Parse optional issuer.
if (jvSource.isMember(jss::issuer) &&
((!jvSource[jss::issuer].isString() ||
!to_issuer(uSrcIssuerID, jvSource[jss::issuer].asString())) ||
(uSrcIssuerID.isZero() != uSrcCurrencyID.isZero()) ||
(noAccount() == uSrcIssuerID)))
{
WriteLog(lsINFO, RPCHandler) << "Bad issuer.";
return std::make_pair(false, rpcError(rpcSRC_ISR_MALFORMED));
}
STPathSet spsComputed;
if (contextPaths)
{
Json::Value pathSet = Json::objectValue;
pathSet[jss::Paths] = contextPaths.get();
STParsedJSONObject paths("pathSet", pathSet);
if (paths.object.get() == nullptr)
return std::make_pair(false, paths.error);
else
{
spsComputed = paths.object.get()->getFieldPathSet(sfPaths);
WriteLog(lsTRACE, RPCHandler) << "ripple_path_find: Paths: " <<
spsComputed.getJson(0);
}
}
STPath fullLiquidityPath;
auto valid = fp.findPathsForIssue(
{ uSrcCurrencyID, uSrcIssuerID },
spsComputed,
fullLiquidityPath);
if (!valid)
{
WriteLog(lsWARNING, RPCHandler)
<< "ripple_path_find: No paths found.";
}
else
{
auto& issuer =
isXRP(uSrcIssuerID) ?
isXRP(uSrcCurrencyID) ? // Default to source account.
xrpAccount() :
Account(raSrc.getAccountID())
: uSrcIssuerID; // Use specifed issuer.
STAmount saMaxAmount({ uSrcCurrencyID, issuer }, 1);
saMaxAmount.negate();
LedgerEntrySet lesSandbox(lpLedger, tapNONE);
auto rc = path::RippleCalc::rippleCalculate(
lesSandbox,
saMaxAmount, // --> Amount to send is unlimited
// to get an estimate.
saDstAmount, // --> Amount to deliver.
raDst.getAccountID(), // --> Account to deliver to.
raSrc.getAccountID(), // --> Account sending from.
spsComputed); // --> Path set.
WriteLog(lsWARNING, RPCHandler)
<< "ripple_path_find:"
<< " saMaxAmount=" << saMaxAmount
<< " saDstAmount=" << saDstAmount
<< " saMaxAmountAct=" << rc.actualAmountIn
<< " saDstAmountAct=" << rc.actualAmountOut;
if (fullLiquidityPath.size() > 0 &&
(rc.result() == terNO_LINE || rc.result() == tecPATH_PARTIAL))
{
WriteLog(lsDEBUG, PathRequest)
<< "Trying with an extra path element";
spsComputed.push_back(fullLiquidityPath);
lesSandbox.clear();
rc = path::RippleCalc::rippleCalculate(
lesSandbox,
saMaxAmount, // --> Amount to send is unlimited
// to get an estimate.
saDstAmount, // --> Amount to deliver.
raDst.getAccountID(), // --> Account to deliver to.
raSrc.getAccountID(), // --> Account sending from.
spsComputed); // --> Path set.
WriteLog(lsDEBUG, PathRequest)
<< "Extra path element gives "
<< transHuman(rc.result());
}
if (rc.result() == tesSUCCESS)
{
Json::Value jvEntry(Json::objectValue);
STPathSet spsCanonical;
// Reuse the expanded as it would need to be calcuated
// anyway to produce the canonical. (At least unless we
// make a direct canonical.)
jvEntry[jss::source_amount] = rc.actualAmountIn.getJson(0);
jvEntry[jss::paths_canonical] = Json::arrayValue;
jvEntry[jss::paths_computed] = spsComputed.getJson(0);
jvArray.append(jvEntry);
}
else
{
std::string strToken;
std::string strHuman;
transResultInfo(rc.result(), strToken, strHuman);
WriteLog(lsDEBUG, RPCHandler)
<< "ripple_path_find: "
<< strToken << " "
<< strHuman << " "
<< spsComputed.getJson(0);
}
}
}
return std::make_pair(true, jvArray);
}
static Json::Value signPayment(
Json::Value const& params,
Json::Value& tx_json,
RippleAddress const& raSrcAddressID,
Ledger::pointer lSnapshot,
int role)
{
RippleAddress dstAccountID;
if (!tx_json.isMember ("Amount"))
return RPC::missing_field_error ("tx_json.Amount");
STAmount amount;
if (!amount.bSetJson (tx_json ["Amount"]))
return RPC::invalid_field_error ("tx_json.Amount");
if (!tx_json.isMember ("Destination"))
return RPC::missing_field_error ("tx_json.Destination");
if (!dstAccountID.setAccountID (tx_json["Destination"].asString ()))
return RPC::invalid_field_error ("tx_json.Destination");
if (tx_json.isMember ("Paths") && params.isMember ("build_path"))
return RPC::make_error (rpcINVALID_PARAMS,
"Cannot specify both 'tx_json.Paths' and 'tx_json.build_path'");
if (!tx_json.isMember ("Paths")
&& tx_json.isMember ("Amount")
&& params.isMember ("build_path"))
{
// Need a ripple path.
STPathSet spsPaths;
uint160 uSrcCurrencyID;
uint160 uSrcIssuerID;
STAmount saSendMax;
if (tx_json.isMember ("SendMax"))
{
if (!saSendMax.bSetJson (tx_json ["SendMax"]))
return RPC::invalid_field_error ("tx_json.SendMax");
}
else
{
// If no SendMax, default to Amount with sender as issuer.
saSendMax = amount;
saSendMax.setIssuer (raSrcAddressID.getAccountID ());
}
if (saSendMax.isNative () && amount.isNative ())
return RPC::make_error (rpcINVALID_PARAMS,
"Cannot build STR to STR paths.");
{
LegacyPathFind lpf (role == Config::ADMIN);
if (!lpf.isOk ())
return rpcError (rpcTOO_BUSY);
bool bValid;
auto cache = boost::make_shared<RippleLineCache> (lSnapshot);
Pathfinder pf (cache, raSrcAddressID, dstAccountID,
saSendMax.getCurrency (), saSendMax.getIssuer (),
amount, bValid);
STPath extraPath;
if (!bValid || !pf.findPaths (getConfig ().PATH_SEARCH_OLD, 4, spsPaths, extraPath))
{
WriteLog (lsDEBUG, RPCHandler)
<< "transactionSign: build_path: No paths found.";
return rpcError (rpcNO_PATH);
}
WriteLog (lsDEBUG, RPCHandler)
<< "transactionSign: build_path: "
<< spsPaths.getJson (0);
if (!spsPaths.isEmpty ())
tx_json["Paths"] = spsPaths.getJson (0);
}
}
return Json::Value();
}
