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148bbf4e8f
This change ensures that no overflow can occur when casting between enums and integral types.
149 lines
4.2 KiB
C++
149 lines
4.2 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) 2012, 2013 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/basics/contract.h>
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#include <ripple/basics/Log.h>
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#include <ripple/basics/safe_cast.h>
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#include <ripple/json/to_string.h>
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#include <ripple/protocol/Indexes.h>
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#include <ripple/protocol/JsonFields.h>
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#include <ripple/protocol/STLedgerEntry.h>
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#include <boost/format.hpp>
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namespace ripple {
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STLedgerEntry::STLedgerEntry (Keylet const& k)
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: STObject(sfLedgerEntry)
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, key_ (k.key)
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, type_ (k.type)
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{
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if (!(0u <= type_ &&
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type_ <= std::min<unsigned>(std::numeric_limits<std::uint16_t>::max(),
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std::numeric_limits<std::underlying_type_t<LedgerEntryType>>::max())))
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Throw<std::runtime_error> ("invalid ledger entry type: out of range");
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auto const format =
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LedgerFormats::getInstance().findByType (type_);
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if (format == nullptr)
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Throw<std::runtime_error> ("invalid ledger entry type");
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set (format->elements);
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setFieldU16 (sfLedgerEntryType,
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static_cast <std::uint16_t> (type_));
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}
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STLedgerEntry::STLedgerEntry (
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SerialIter& sit,
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uint256 const& index)
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: STObject (sfLedgerEntry)
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, key_ (index)
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{
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set (sit);
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setSLEType ();
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}
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STLedgerEntry::STLedgerEntry (
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STObject const& object,
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uint256 const& index)
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: STObject (object)
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, key_ (index)
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{
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setSLEType ();
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}
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void STLedgerEntry::setSLEType ()
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{
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auto format = LedgerFormats::getInstance().findByType (
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safe_cast <LedgerEntryType> (
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getFieldU16 (sfLedgerEntryType)));
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if (format == nullptr)
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Throw<std::runtime_error> ("invalid ledger entry type");
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type_ = format->getType ();
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applyTemplate (format->elements); // May throw
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}
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std::string STLedgerEntry::getFullText () const
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{
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auto const format =
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LedgerFormats::getInstance().findByType (type_);
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if (format == nullptr)
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Throw<std::runtime_error> ("invalid ledger entry type");
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std::string ret = "\"";
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ret += to_string (key_);
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ret += "\" = { ";
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ret += format->getName ();
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ret += ", ";
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ret += STObject::getFullText ();
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ret += "}";
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return ret;
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}
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std::string STLedgerEntry::getText () const
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{
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return str (boost::format ("{ %s, %s }")
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% to_string (key_)
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% STObject::getText ());
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}
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Json::Value STLedgerEntry::getJson (int options) const
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{
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Json::Value ret (STObject::getJson (options));
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ret[jss::index] = to_string (key_);
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return ret;
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}
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bool STLedgerEntry::isThreadedType () const
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{
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return getFieldIndex (sfPreviousTxnID) != -1;
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}
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bool STLedgerEntry::thread (
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uint256 const& txID,
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std::uint32_t ledgerSeq,
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uint256& prevTxID,
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std::uint32_t& prevLedgerID)
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{
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uint256 oldPrevTxID = getFieldH256 (sfPreviousTxnID);
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JLOG (debugLog().info())
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<< "Thread Tx:" << txID << " prev:" << oldPrevTxID;
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if (oldPrevTxID == txID)
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{
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// this transaction is already threaded
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assert (getFieldU32 (sfPreviousTxnLgrSeq) == ledgerSeq);
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return false;
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}
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prevTxID = oldPrevTxID;
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prevLedgerID = getFieldU32 (sfPreviousTxnLgrSeq);
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setFieldH256 (sfPreviousTxnID, txID);
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setFieldU32 (sfPreviousTxnLgrSeq, ledgerSeq);
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return true;
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}
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} // ripple
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