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Subaddress: fix use-after-free on accessing stale Wallet API data

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This commit is contained in:
xiphon 2019-12-17 21:49:58 +00:00
parent 46227bdad0
commit 8c511722e0
3 changed files with 39 additions and 23 deletions
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29
src/libwalletqt/Subaddress.cpp
View file

@ -36,49 +36,58 @@ Subaddress::Subaddress(Monero::Subaddress *subaddressImpl, QObject *parent)
getAll();
}
QList<Monero::SubaddressRow*> Subaddress::getAll(bool update) const
void Subaddress::getAll() const
{
qDebug(__FUNCTION__);
emit refreshStarted();
if(update)
m_rows.clear();
{
QWriteLocker locker(&m_lock);
if (m_rows.empty()){
m_rows.clear();
for (auto &row: m_subaddressImpl->getAll()) {
m_rows.append(row);
}
}
emit refreshFinished();
return m_rows;
}
Monero::SubaddressRow * Subaddress::getRow(int index) const
bool Subaddress::getRow(int index, std::function<void (Monero::SubaddressRow &row)> callback) const
{
return m_rows.at(index);
QReadLocker locker(&m_lock);
if (index < 0 || index >= m_rows.size())
{
return false;
}
callback(*m_rows.value(index));
return true;
}
void Subaddress::addRow(quint32 accountIndex, const QString &label) const
{
m_subaddressImpl->addRow(accountIndex, label.toStdString());
getAll(true);
getAll();
}
void Subaddress::setLabel(quint32 accountIndex, quint32 addressIndex, const QString &label) const
{
m_subaddressImpl->setLabel(accountIndex, addressIndex, label.toStdString());
getAll(true);
getAll();
}
void Subaddress::refresh(quint32 accountIndex) const
{
m_subaddressImpl->refresh(accountIndex);
getAll(true);
getAll();
}
quint64 Subaddress::count() const
{
QReadLocker locker(&m_lock);
return m_rows.size();
}

6
src/libwalletqt/Subaddress.h
View file

@ -30,6 +30,7 @@
#define SUBADDRESS_H
#include <wallet/api/wallet2_api.h>
#include <QReadWriteLock>
#include <QObject>
#include <QList>
#include <QDateTime>
@ -38,8 +39,8 @@ class Subaddress : public QObject
{
Q_OBJECT
public:
Q_INVOKABLE QList<Monero::SubaddressRow*> getAll(bool update = false) const;
Q_INVOKABLE Monero::SubaddressRow * getRow(int index) const;
Q_INVOKABLE void getAll() const;
Q_INVOKABLE bool getRow(int index, std::function<void (Monero::SubaddressRow &row)> callback) const;
Q_INVOKABLE void addRow(quint32 accountIndex, const QString &label) const;
Q_INVOKABLE void setLabel(quint32 accountIndex, quint32 addressIndex, const QString &label) const;
Q_INVOKABLE void refresh(quint32 accountIndex) const;
@ -54,6 +55,7 @@ public slots:
private:
explicit Subaddress(Monero::Subaddress * subaddressImpl, QObject *parent);
friend class Wallet;
mutable QReadWriteLock m_lock;
Monero::Subaddress * m_subaddressImpl;
mutable QList<Monero::SubaddressRow*> m_rows;
};

27
src/model/SubaddressModel.cpp
View file

@ -60,18 +60,23 @@ QVariant SubaddressModel::data(const QModelIndex &index, int role) const
if (!index.isValid() || index.row() < 0 || (unsigned)index.row() >= m_subaddress->count())
return {};
Monero::SubaddressRow * sr = m_subaddress->getRow(index.row());
if (!sr)
return {};
QVariant result;
QVariant result = "";
switch (role) {
case SubaddressAddressRole:
result = QString::fromStdString(sr->getAddress());
break;
case SubaddressLabelRole:
result = index.row() == 0 ? tr("Primary address") : QString::fromStdString(sr->getLabel());
break;
bool found = m_subaddress->getRow(index.row(), [&index, &result, &role](const Monero::SubaddressRow &subaddress) {
switch (role) {
case SubaddressAddressRole:
result = QString::fromStdString(subaddress.getAddress());
break;
case SubaddressLabelRole:
result = index.row() == 0 ? tr("Primary address") : QString::fromStdString(subaddress.getLabel());
break;
default:
qCritical() << "Unimplemented role" << role;
}
});
if (!found)
{
qCritical("%s: internal error: invalid index %d", __FUNCTION__, index.row());
}
return result;