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UI to alert of respend attempt affecting wallet.

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Respend transactions that conflict with transactions already in the
wallet are added to it.  They are not displayed unless they also involve
the wallet, or get into a block.  If they do not involve the wallet,
they continue not to affect balance.

Transactions that involve the wallet, and have conflicting non-equivalent
transactions, are highlighted in red.  When the conflict first occurs, a
modal dialog is thrown.

CWallet::SyncMetaData is changed to sync only to equivalent transactions.

When a conflict is added to the wallet, counter nConflictsReceived is
incremented.  This acts like a change in active block height for the
purpose of triggering UI updates.
This commit is contained in:
Tom Harding 2014-06-26 18:31:05 -07:00
parent d640a3ceab
commit ada5a067c7
9 changed files with 87 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
src/qt/guiconstants.h
View File

@ -23,6 +23,10 @@ static const int STATUSBAR_ICONSIZE = 16;
#define COLOR_NEGATIVE QColor(255, 0, 0)
/* Transaction list -- bare address (without label) */
#define COLOR_BAREADDRESS QColor(140, 140, 140)
/* Transaction list -- has conflicting transactions */
#define COLOR_HASCONFLICTING Qt::white;
/* Transaction list -- has conflicting transactions - background */
#define COLOR_HASCONFLICTING_BG QColor(192, 0, 0)
/* Tooltips longer than this (in characters) are converted into rich text,
so that they can be word-wrapped.

4
src/qt/transactionfilterproxy.cpp
View File

@ -24,7 +24,7 @@ TransactionFilterProxy::TransactionFilterProxy(QObject *parent) :
typeFilter(ALL_TYPES),
minAmount(0),
limitRows(-1),
showInactive(true)
showInactive(false)
{
}
@ -39,7 +39,7 @@ bool TransactionFilterProxy::filterAcceptsRow(int sourceRow, const QModelIndex &
qint64 amount = llabs(index.data(TransactionTableModel::AmountRole).toLongLong());
int status = index.data(TransactionTableModel::StatusRole).toInt();
if(!showInactive && status == TransactionStatus::Conflicted)
if(!showInactive && status == TransactionStatus::Conflicted && type == TransactionRecord::Other)
return false;
if(!(TYPE(type) & typeFilter))
return false;

10
src/qt/transactionrecord.cpp
View File

@ -170,6 +170,8 @@ void TransactionRecord::updateStatus(const CWalletTx &wtx)
status.depth = wtx.GetDepthInMainChain();
status.cur_num_blocks = chainActive.Height();
status.hasConflicting = false;
if (!IsFinalTx(wtx, chainActive.Height() + 1))
{
if (wtx.nLockTime < LOCKTIME_THRESHOLD)
@ -213,6 +215,7 @@ void TransactionRecord::updateStatus(const CWalletTx &wtx)
if (status.depth < 0)
{
status.status = TransactionStatus::Conflicted;
status.hasConflicting = !(wtx.GetConflicts(false).empty());
}
else if (GetAdjustedTime() - wtx.nTimeReceived > 2 * 60 && wtx.GetRequestCount() == 0)
{
@ -221,6 +224,7 @@ void TransactionRecord::updateStatus(const CWalletTx &wtx)
else if (status.depth == 0)
{
status.status = TransactionStatus::Unconfirmed;
status.hasConflicting = !(wtx.GetConflicts(false).empty());
}
else if (status.depth < RecommendedNumConfirmations)
{
@ -231,13 +235,13 @@ void TransactionRecord::updateStatus(const CWalletTx &wtx)
status.status = TransactionStatus::Confirmed;
}
}
}
bool TransactionRecord::statusUpdateNeeded()
bool TransactionRecord::statusUpdateNeeded(int64_t nConflictsReceived)
{
AssertLockHeld(cs_main);
return status.cur_num_blocks != chainActive.Height();
return (status.cur_num_blocks != chainActive.Height() ||
status.cur_num_conflicts != nConflictsReceived);
}
QString TransactionRecord::getTxID() const

13
src/qt/transactionrecord.h
View File

@ -20,7 +20,8 @@ class TransactionStatus
public:
TransactionStatus():
countsForBalance(false), sortKey(""),
matures_in(0), status(Offline), depth(0), open_for(0), cur_num_blocks(-1)
matures_in(0), status(Offline), hasConflicting(false), depth(0), open_for(0), cur_num_blocks(-1),
cur_num_conflicts(-1)
{ }
enum Status {
@ -51,6 +52,10 @@ public:
/** @name Reported status
@{*/
Status status;
// Has conflicting transactions spending same prevout
bool hasConflicting;
qint64 depth;
qint64 open_for; /**< Timestamp if status==OpenUntilDate, otherwise number
of additional blocks that need to be mined before
@ -59,6 +64,10 @@ public:
/** Current number of blocks (to know whether cached status is still valid) */
int cur_num_blocks;
/** Number of conflicts received into wallet as of last status update */
int64_t cur_num_conflicts;
};
/** UI model for a transaction. A core transaction can be represented by multiple UI transactions if it has
@ -133,7 +142,7 @@ public:
/** Return whether a status update is needed.
*/
bool statusUpdateNeeded();
bool statusUpdateNeeded(int64_t nConflictsReceived);
};
#endif // TRANSACTIONRECORD_H

18
src/qt/transactiontablemodel.cpp
View File

@ -168,8 +168,7 @@ public:
parent->endRemoveRows();
break;
case CT_UPDATED:
// Miscellaneous updates -- nothing to do, status update will take care of this, and is only computed for
// visible transactions.
emit parent->dataChanged(parent->index(lowerIndex, parent->Status), parent->index(upperIndex-1, parent->Amount));
break;
}
}
@ -190,20 +189,21 @@ public:
// stuck if the core is holding the locks for a longer time - for
// example, during a wallet rescan.
//
// If a status update is needed (blocks came in since last check),
// update the status of this transaction from the wallet. Otherwise,
// If a status update is needed (blocks or conflicts came in since last check),
// update the status of this transaction from the wallet. Otherwise,
// simply re-use the cached status.
TRY_LOCK(cs_main, lockMain);
if(lockMain)
{
TRY_LOCK(wallet->cs_wallet, lockWallet);
if(lockWallet && rec->statusUpdateNeeded())
if(lockWallet && rec->statusUpdateNeeded(wallet->nConflictsReceived))
{
std::map<uint256, CWalletTx>::iterator mi = wallet->mapWallet.find(rec->hash);
if(mi != wallet->mapWallet.end())
{
rec->updateStatus(mi->second);
rec->status.cur_num_conflicts = wallet->nConflictsReceived;
}
}
}
@ -363,6 +363,8 @@ QString TransactionTableModel::formatTxType(const TransactionRecord *wtx) const
return tr("Payment to yourself");
case TransactionRecord::Generated:
return tr("Mined");
case TransactionRecord::Other:
return tr("Other");
default:
return QString();
}
@ -535,7 +537,13 @@ QVariant TransactionTableModel::data(const QModelIndex &index, int role) const
return formatTooltip(rec);
case Qt::TextAlignmentRole:
return column_alignments[index.column()];
case Qt::BackgroundColorRole:
if (rec->status.hasConflicting)
return COLOR_HASCONFLICTING_BG;
break;
case Qt::ForegroundRole:
if (rec->status.hasConflicting)
return COLOR_HASCONFLICTING;
// Non-confirmed (but not immature) as transactions are grey
if(!rec->status.countsForBalance && rec->status.status != TransactionStatus::Immature)
{

8
src/qt/walletmodel.cpp
View File

@ -138,6 +138,14 @@ void WalletModel::checkBalanceChanged()
void WalletModel::updateTransaction(const QString &hash, int status)
{
if (status == CT_GOT_CONFLICT)
{
emit message(tr("Conflict Received"),
tr("WARNING: Transaction may never be confirmed. Its input was seen being spent by another transaction on the network. Wait for confirmation!"),
CClientUIInterface::MSG_WARNING);
return;
}
if(transactionTableModel)
transactionTableModel->updateTransaction(hash, status);

3
src/ui_interface.h
View File

@ -21,7 +21,8 @@ enum ChangeType
{
CT_NEW,
CT_UPDATED,
CT_DELETED
CT_DELETED,
CT_GOT_CONFLICT
};
/** Signals for UI communication. */

33
src/wallet.cpp
View File

@ -256,7 +256,7 @@ bool CWallet::SetMaxVersion(int nVersion)
return true;
}
set<uint256> CWallet::GetConflicts(const uint256& txid) const
set<uint256> CWallet::GetConflicts(const uint256& txid, bool includeEquivalent) const
{
set<uint256> result;
AssertLockHeld(cs_wallet);
@ -274,7 +274,8 @@ set<uint256> CWallet::GetConflicts(const uint256& txid) const
continue; // No conflict if zero or one spends
range = mapTxSpends.equal_range(txin.prevout);
for (TxSpends::const_iterator it = range.first; it != range.second; ++it)
result.insert(it->second);
if (includeEquivalent || !wtx.IsEquivalentTo(mapWallet.at(it->second)))
result.insert(it->second);
}
return result;
}
@ -303,6 +304,7 @@ void CWallet::SyncMetaData(pair<TxSpends::iterator, TxSpends::iterator> range)
const uint256& hash = it->second;
CWalletTx* copyTo = &mapWallet[hash];
if (copyFrom == copyTo) continue;
if (!copyFrom->IsEquivalentTo(*copyTo)) continue;
copyTo->mapValue = copyFrom->mapValue;
copyTo->vOrderForm = copyFrom->vOrderForm;
// fTimeReceivedIsTxTime not copied on purpose
@ -588,6 +590,20 @@ bool CWallet::AddToWallet(const CWalletTx& wtxIn, bool fFromLoadWallet)
// Notify UI of new or updated transaction
NotifyTransactionChanged(this, hash, fInsertedNew ? CT_NEW : CT_UPDATED);
// Notifications for existing transactions that now have conflicts with this one
if (fInsertedNew)
{
BOOST_FOREACH(const uint256& conflictHash, wtxIn.GetConflicts(false))
{
CWalletTx& txConflict = mapWallet[conflictHash];
NotifyTransactionChanged(this, conflictHash, CT_UPDATED); //Updates UI table
if (IsFromMe(txConflict) || IsMine(txConflict))
{
NotifyTransactionChanged(this, conflictHash, CT_GOT_CONFLICT); //Throws dialog
}
}
}
// notify an external script when a wallet transaction comes in or is updated
std::string strCmd = GetArg("-walletnotify", "");
@ -610,7 +626,12 @@ bool CWallet::AddToWalletIfInvolvingMe(const CTransaction& tx, const CBlock* pbl
AssertLockHeld(cs_wallet);
bool fExisted = mapWallet.count(tx.GetHash());
if (fExisted && !fUpdate) return false;
if (fExisted || IsMine(tx) || IsFromMe(tx))
bool fIsConflicting = IsConflicting(tx);
if (fIsConflicting)
nConflictsReceived++;
if (fExisted || IsMine(tx) || IsFromMe(tx) || fIsConflicting)
{
CWalletTx wtx(this,tx);
// Get merkle branch if transaction was found in a block
@ -896,7 +917,7 @@ void CWallet::ReacceptWalletTransactions()
int nDepth = wtx.GetDepthInMainChain();
if (!wtx.IsCoinBase() && nDepth < 0)
if (!wtx.IsCoinBase() && nDepth < 0 && (IsMine(wtx) || IsFromMe(wtx)))
{
// Try to add to memory pool
LOCK(mempool.cs);
@ -916,13 +937,13 @@ void CWalletTx::RelayWalletTransaction()
}
}
set<uint256> CWalletTx::GetConflicts() const
set<uint256> CWalletTx::GetConflicts(bool includeEquivalent) const
{
set<uint256> result;
if (pwallet != NULL)
{
uint256 myHash = GetHash();
result = pwallet->GetConflicts(myHash);
result = pwallet->GetConflicts(myHash, includeEquivalent);
result.erase(myHash);
}
return result;

15
src/wallet.h
View File

@ -141,6 +141,9 @@ public:
MasterKeyMap mapMasterKeys;
unsigned int nMasterKeyMaxID;
// Increment to cause UI refresh, similar to new block
int64_t nConflictsReceived;
CWallet()
{
SetNull();
@ -163,6 +166,7 @@ public:
nNextResend = 0;
nLastResend = 0;
nTimeFirstKey = 0;
nConflictsReceived = 0;
}
std::map<uint256, CWalletTx> mapWallet;
@ -305,6 +309,13 @@ public:
{
return (GetDebit(tx) > 0);
}
bool IsConflicting(const CTransaction& tx) const
{
BOOST_FOREACH(const CTxIn& txin, tx.vin)
if (mapTxSpends.count(txin.prevout))
return true;
return false;
}
int64_t GetDebit(const CTransaction& tx) const
{
int64_t nDebit = 0;
@ -377,7 +388,7 @@ public:
int GetVersion() { LOCK(cs_wallet); return nWalletVersion; }
// Get wallet transactions that conflict with given transaction (spend same outputs)
std::set<uint256> GetConflicts(const uint256& txid) const;
std::set<uint256> GetConflicts(const uint256& txid, bool includeEquivalent) const;
/** Address book entry changed.
* @note called with lock cs_wallet held.
@ -699,7 +710,7 @@ public:
void RelayWalletTransaction();
std::set<uint256> GetConflicts() const;
std::set<uint256> GetConflicts(bool includeEquivalent=true) const;
};