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The six different ranges of TER codes are broken up into six different enumerations. A template class allows subsets of these enumerations to be aggregated. This technique allows verification at compile time that no TEC codes are returned before the signature is checked. Conversion between TER instance and integer is provided by named functions. This makes accidental conversion almost impossible and makes type abuse easier to spot in the code base.
126 lines
4.1 KiB
C++
126 lines
4.1 KiB
C++
//------------------------------------------------------------------------------
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/*
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This file is part of rippled: https://github.com/ripple/rippled
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Copyright (c) 2014 Ripple Labs Inc.
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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//==============================================================================
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#include <ripple/app/tx/impl/CreateTicket.h>
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#include <ripple/app/ledger/Ledger.h>
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#include <ripple/basics/Log.h>
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#include <ripple/protocol/Feature.h>
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#include <ripple/protocol/Indexes.h>
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#include <ripple/protocol/TxFlags.h>
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namespace ripple {
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NotTEC
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CreateTicket::preflight (PreflightContext const& ctx)
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{
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if (! ctx.rules.enabled(featureTickets))
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return temDISABLED;
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if (ctx.tx.getFlags() & tfUniversalMask)
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return temINVALID_FLAG;
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auto const ret = preflight1 (ctx);
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if (!isTesSuccess (ret))
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return ret;
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if (ctx.tx.isFieldPresent (sfExpiration))
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{
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if (ctx.tx.getFieldU32 (sfExpiration) == 0)
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{
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JLOG(ctx.j.warn()) <<
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"Malformed transaction: bad expiration";
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return temBAD_EXPIRATION;
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}
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}
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return preflight2 (ctx);
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}
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TER
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CreateTicket::doApply ()
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{
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auto const sle = view().peek(keylet::account(account_));
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// A ticket counts against the reserve of the issuing account, but we
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// check the starting balance because we want to allow dipping into the
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// reserve to pay fees.
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{
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auto const reserve = view().fees().accountReserve(
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sle->getFieldU32(sfOwnerCount) + 1);
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if (mPriorBalance < reserve)
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return tecINSUFFICIENT_RESERVE;
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}
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NetClock::time_point expiration{};
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if (ctx_.tx.isFieldPresent (sfExpiration))
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{
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expiration = NetClock::time_point(NetClock::duration(ctx_.tx[sfExpiration]));
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if (view().parentCloseTime() >= expiration)
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return tesSUCCESS;
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}
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SLE::pointer sleTicket = std::make_shared<SLE>(ltTICKET,
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getTicketIndex (account_, ctx_.tx.getSequence ()));
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sleTicket->setAccountID (sfAccount, account_);
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sleTicket->setFieldU32 (sfSequence, ctx_.tx.getSequence ());
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if (expiration != NetClock::time_point{})
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sleTicket->setFieldU32 (sfExpiration, expiration.time_since_epoch().count());
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view().insert (sleTicket);
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if (ctx_.tx.isFieldPresent (sfTarget))
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{
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AccountID const target_account (ctx_.tx.getAccountID (sfTarget));
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SLE::pointer sleTarget = view().peek (keylet::account(target_account));
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// Destination account does not exist.
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if (!sleTarget)
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return tecNO_TARGET;
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// The issuing account is the default account to which the ticket
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// applies so don't bother saving it if that's what's specified.
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if (target_account != account_)
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sleTicket->setAccountID (sfTarget, target_account);
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}
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auto viewJ = ctx_.app.journal ("View");
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auto const page = dirAdd(view(), keylet::ownerDir (account_),
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sleTicket->key(), false, describeOwnerDir (account_), viewJ);
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JLOG(j_.trace()) <<
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"Creating ticket " << to_string (sleTicket->key()) <<
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": " << (page ? "success" : "failure");
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if (!page)
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return tecDIR_FULL;
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sleTicket->setFieldU64(sfOwnerNode, *page);
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// If we succeeded, the new entry counts against the
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// creator's reserve.
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adjustOwnerCount(view(), sle, 1, viewJ);
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return tesSUCCESS;
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}
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}
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