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// Copyright (c) 2011-2021 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include <qt/bantablemodel.h>
#include <interfaces/node.h>
#include <net_types.h> // For banmap_t
#include <utility>
#include <QDateTime>
#include <QList>
#include <QLocale>
#include <QModelIndex>
#include <QVariant>
bool BannedNodeLessThan::operator()(const CCombinedBan& left, const CCombinedBan& right) const
{
const CCombinedBan* pLeft = &left;
const CCombinedBan* pRight = &right;
if (order == Qt::DescendingOrder)
std::swap(pLeft, pRight);
switch (static_cast<BanTableModel::ColumnIndex>(column)) {
case BanTableModel::Address:
return pLeft->subnet.ToString().compare(pRight->subnet.ToString()) < 0;
case BanTableModel::Bantime:
return pLeft->banEntry.nBanUntil < pRight->banEntry.nBanUntil;
} // no default case, so the compiler can warn about missing cases
assert(false);
}
// private implementation
class BanTablePriv
{
public:
/** Local cache of peer information */
QList<CCombinedBan> cachedBanlist;
/** Column to sort nodes by (default to unsorted) */
int sortColumn{-1};
/** Order (ascending or descending) to sort nodes by */
Qt::SortOrder sortOrder;
/** Pull a full list of banned nodes from CNode into our cache */
void refreshBanlist(interfaces::Node& node)
{
banmap_t banMap;
node.getBanned(banMap);
cachedBanlist.clear();
cachedBanlist.reserve(banMap.size());
for (const auto& entry : banMap)
{
CCombinedBan banEntry;
banEntry.subnet = entry.first;
banEntry.banEntry = entry.second;
cachedBanlist.append(banEntry);
}
if (sortColumn >= 0)
// sort cachedBanlist (use stable sort to prevent rows jumping around unnecessarily)
std::stable_sort(cachedBanlist.begin(), cachedBanlist.end(), BannedNodeLessThan(sortColumn, sortOrder));
}
int size() const
{
return cachedBanlist.size();
}
CCombinedBan *index(int idx)
{
if (idx >= 0 && idx < cachedBanlist.size())
return &cachedBanlist[idx];
return nullptr;
}
};
BanTableModel::BanTableModel(interfaces::Node& node, QObject* parent) :
QAbstractTableModel(parent),
m_node(node)
{
columns << tr("IP/Netmask") << tr("Banned Until");
priv.reset(new BanTablePriv());
// load initial data
refresh();
}
BanTableModel::~BanTableModel()
{
// Intentionally left empty
}
int BanTableModel::rowCount(const QModelIndex &parent) const
{
if (parent.isValid()) {
return 0;
}
return priv->size();
}
int BanTableModel::columnCount(const QModelIndex &parent) const
{
if (parent.isValid()) {
return 0;
}
return columns.length();
}
QVariant BanTableModel::data(const QModelIndex &index, int role) const
{
if(!index.isValid())
return QVariant();
CCombinedBan *rec = static_cast<CCombinedBan*>(index.internalPointer());
const auto column = static_cast<ColumnIndex>(index.column());
if (role == Qt::DisplayRole) {
switch (column) {
case Address:
return QString::fromStdString(rec->subnet.ToString());
case Bantime:
QDateTime date = QDateTime::fromMSecsSinceEpoch(0);
date = date.addSecs(rec->banEntry.nBanUntil);
return QLocale::system().toString(date, QLocale::LongFormat);
} // no default case, so the compiler can warn about missing cases
assert(false);
}
return QVariant();
}
QVariant BanTableModel::headerData(int section, Qt::Orientation orientation, int role) const
{
if(orientation == Qt::Horizontal)
{
if(role == Qt::DisplayRole && section < columns.size())
{
return columns[section];
}
}
return QVariant();
}
Qt::ItemFlags BanTableModel::flags(const QModelIndex &index) const
{
if (!index.isValid()) return Qt::NoItemFlags;
Qt::ItemFlags retval = Qt::ItemIsSelectable | Qt::ItemIsEnabled;
return retval;
}
QModelIndex BanTableModel::index(int row, int column, const QModelIndex &parent) const
{
Q_UNUSED(parent);
CCombinedBan *data = priv->index(row);
if (data)
return createIndex(row, column, data);
return QModelIndex();
}
void BanTableModel::refresh()
{
Q_EMIT layoutAboutToBeChanged();
priv->refreshBanlist(m_node);
Q_EMIT layoutChanged();
}
void BanTableModel::sort(int column, Qt::SortOrder order)
{
priv->sortColumn = column;
priv->sortOrder = order;
refresh();
}
bool BanTableModel::shouldShow()
{
return priv->size() > 0;
}
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