Bitcoin Core  22.99.0
P2P Digital Currency
bantablemodel.cpp
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1 // Copyright (c) 2011-2020 The Bitcoin Core developers
2 // Distributed under the MIT software license, see the accompanying
3 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
4 
5 #include <qt/bantablemodel.h>
6 
7 #include <interfaces/node.h>
8 #include <net_types.h> // For banmap_t
9 
10 #include <utility>
11 
12 #include <QDateTime>
13 #include <QList>
14 #include <QLocale>
15 #include <QModelIndex>
16 #include <QVariant>
17 
18 bool BannedNodeLessThan::operator()(const CCombinedBan& left, const CCombinedBan& right) const
19 {
20  const CCombinedBan* pLeft = &left;
21  const CCombinedBan* pRight = &right;
22 
23  if (order == Qt::DescendingOrder)
24  std::swap(pLeft, pRight);
25 
26  switch (static_cast<BanTableModel::ColumnIndex>(column)) {
28  return pLeft->subnet.ToString().compare(pRight->subnet.ToString()) < 0;
30  return pLeft->banEntry.nBanUntil < pRight->banEntry.nBanUntil;
31  } // no default case, so the compiler can warn about missing cases
32  assert(false);
33 }
34 
35 // private implementation
37 {
38 public:
40  QList<CCombinedBan> cachedBanlist;
42  int sortColumn{-1};
44  Qt::SortOrder sortOrder;
45 
48  {
49  banmap_t banMap;
50  node.getBanned(banMap);
51 
52  cachedBanlist.clear();
53  cachedBanlist.reserve(banMap.size());
54  for (const auto& entry : banMap)
55  {
56  CCombinedBan banEntry;
57  banEntry.subnet = entry.first;
58  banEntry.banEntry = entry.second;
59  cachedBanlist.append(banEntry);
60  }
61 
62  if (sortColumn >= 0)
63  // sort cachedBanlist (use stable sort to prevent rows jumping around unnecessarily)
64  std::stable_sort(cachedBanlist.begin(), cachedBanlist.end(), BannedNodeLessThan(sortColumn, sortOrder));
65  }
66 
67  int size() const
68  {
69  return cachedBanlist.size();
70  }
71 
72  CCombinedBan *index(int idx)
73  {
74  if (idx >= 0 && idx < cachedBanlist.size())
75  return &cachedBanlist[idx];
76 
77  return nullptr;
78  }
79 };
80 
82  QAbstractTableModel(parent),
83  m_node(node)
84 {
85  columns << tr("IP/Netmask") << tr("Banned Until");
86  priv.reset(new BanTablePriv());
87 
88  // load initial data
89  refresh();
90 }
91 
93 {
94  // Intentionally left empty
95 }
96 
97 int BanTableModel::rowCount(const QModelIndex &parent) const
98 {
99  if (parent.isValid()) {
100  return 0;
101  }
102  return priv->size();
103 }
104 
105 int BanTableModel::columnCount(const QModelIndex &parent) const
106 {
107  if (parent.isValid()) {
108  return 0;
109  }
110  return columns.length();
111 }
112 
113 QVariant BanTableModel::data(const QModelIndex &index, int role) const
114 {
115  if(!index.isValid())
116  return QVariant();
117 
118  CCombinedBan *rec = static_cast<CCombinedBan*>(index.internalPointer());
119 
120  const auto column = static_cast<ColumnIndex>(index.column());
121  if (role == Qt::DisplayRole) {
122  switch (column) {
123  case Address:
124  return QString::fromStdString(rec->subnet.ToString());
125  case Bantime:
126  QDateTime date = QDateTime::fromMSecsSinceEpoch(0);
127  date = date.addSecs(rec->banEntry.nBanUntil);
128  return QLocale::system().toString(date, QLocale::LongFormat);
129  } // no default case, so the compiler can warn about missing cases
130  assert(false);
131  }
132 
133  return QVariant();
134 }
135 
136 QVariant BanTableModel::headerData(int section, Qt::Orientation orientation, int role) const
137 {
138  if(orientation == Qt::Horizontal)
139  {
140  if(role == Qt::DisplayRole && section < columns.size())
141  {
142  return columns[section];
143  }
144  }
145  return QVariant();
146 }
147 
148 Qt::ItemFlags BanTableModel::flags(const QModelIndex &index) const
149 {
150  if (!index.isValid()) return Qt::NoItemFlags;
151 
152  Qt::ItemFlags retval = Qt::ItemIsSelectable | Qt::ItemIsEnabled;
153  return retval;
154 }
155 
156 QModelIndex BanTableModel::index(int row, int column, const QModelIndex &parent) const
157 {
158  Q_UNUSED(parent);
159  CCombinedBan *data = priv->index(row);
160 
161  if (data)
162  return createIndex(row, column, data);
163  return QModelIndex();
164 }
165 
167 {
168  Q_EMIT layoutAboutToBeChanged();
169  priv->refreshBanlist(m_node);
170  Q_EMIT layoutChanged();
171 }
172 
173 void BanTableModel::sort(int column, Qt::SortOrder order)
174 {
175  priv->sortColumn = column;
176  priv->sortOrder = order;
177  refresh();
178 }
179 
181 {
182  return priv->size() > 0;
183 }
CCombinedBan
Definition: bantablemodel.h:22
BanTableModel::headerData
QVariant headerData(int section, Qt::Orientation orientation, int role) const override
Definition: bantablemodel.cpp:136
assert
assert(!tx.IsCoinBase())
CCombinedBan::banEntry
CBanEntry banEntry
Definition: bantablemodel.h:24
m_node
NodeContext & m_node
Definition: bitcoin-node.cpp:38
BannedNodeLessThan::operator()
bool operator()(const CCombinedBan &left, const CCombinedBan &right) const
Definition: bantablemodel.cpp:18
BanTableModel::flags
Qt::ItemFlags flags(const QModelIndex &index) const override
Definition: bantablemodel.cpp:148
BannedNodeLessThan::order
Qt::SortOrder order
Definition: bantablemodel.h:36
BanTablePriv::sortColumn
int sortColumn
Column to sort nodes by (default to unsorted)
Definition: bantablemodel.cpp:42
BanTablePriv::refreshBanlist
void refreshBanlist(interfaces::Node &node)
Pull a full list of banned nodes from CNode into our cache.
Definition: bantablemodel.cpp:47
BanTableModel::Bantime
@ Bantime
Definition: bantablemodel.h:55
BanTableModel::BanTableModel
BanTableModel(interfaces::Node &node, QObject *parent)
Definition: bantablemodel.cpp:81
BanTablePriv::sortOrder
Qt::SortOrder sortOrder
Order (ascending or descending) to sort nodes by.
Definition: bantablemodel.cpp:44
BanTablePriv::size
int size() const
Definition: bantablemodel.cpp:67
net_types.h
CCombinedBan::subnet
CSubNet subnet
Definition: bantablemodel.h:23
BanTableModel::sort
void sort(int column, Qt::SortOrder order) override
Definition: bantablemodel.cpp:173
node.h
BanTableModel::~BanTableModel
~BanTableModel()
Definition: bantablemodel.cpp:92
BanTablePriv::cachedBanlist
QList< CCombinedBan > cachedBanlist
Local cache of peer information.
Definition: bantablemodel.cpp:40
BanTableModel::ColumnIndex
ColumnIndex
Definition: bantablemodel.h:53
interfaces::Node
Top-level interface for a bitcoin node (bitcoind process).
Definition: node.h:54
BanTableModel::shouldShow
bool shouldShow()
Definition: bantablemodel.cpp:180
BanTablePriv::index
CCombinedBan * index(int idx)
Definition: bantablemodel.cpp:72
BanTableModel::index
QModelIndex index(int row, int column, const QModelIndex &parent) const override
Definition: bantablemodel.cpp:156
BannedNodeLessThan
Definition: bantablemodel.h:27
BanTableModel::priv
std::unique_ptr< BanTablePriv > priv
Definition: bantablemodel.h:77
BanTableModel::columnCount
int columnCount(const QModelIndex &parent) const override
Definition: bantablemodel.cpp:105
CSubNet::ToString
std::string ToString() const
Definition: netaddress.cpp:1175
CBanEntry::nBanUntil
int64_t nBanUntil
Definition: net_types.h:20
node
Definition: interfaces.cpp:68
banmap_t
std::map< CSubNet, CBanEntry > banmap_t
Definition: net_types.h:41
bantablemodel.h
BanTableModel::rowCount
int rowCount(const QModelIndex &parent) const override
Definition: bantablemodel.cpp:97
BanTableModel::m_node
interfaces::Node & m_node
Definition: bantablemodel.h:75
BanTableModel::data
QVariant data(const QModelIndex &index, int role) const override
Definition: bantablemodel.cpp:113
BanTableModel::refresh
void refresh()
Definition: bantablemodel.cpp:166
BannedNodeLessThan::column
int column
Definition: bantablemodel.h:35
BanTableModel::columns
QStringList columns
Definition: bantablemodel.h:76
BanTablePriv
Definition: bantablemodel.cpp:36
BanTableModel::Address
@ Address
Definition: bantablemodel.h:54