src/gui/Mainwindow.cxx

   1 #include "Mainwindow.hxx"
   2 #include "qt.hxx"
   3 #include "disassembler/llvm/LLVMDisassembler.hxx"
   4 #include "core/Function.hxx"
   5 #include "core/BasicBlock.hxx"
   6 #include "core/InformationManager.hxx"
   7 #include "widgets/ScriptingDock.hxx"
   8 #include "widgets/CFGScene.hxx"
   9 #include "widgets/FunctionWidget.hxx"
  10 #include "dialogs/NewFunctionDialog.hxx"
  11 #include "dialogs/SimpleStringDialog.hxx"
  12
  13 #include <sstream>
  14
  15 namespace {
  16         BasicBlockWidget *
  17         local__add_basic_block(BasicBlock * block,
  18                                Mainwindow * mainwindow, InformationManager * manager,
  19                                std::map<uint64_t, BasicBlockWidget*>& known_blocks,
  20                                CFGScene * scene, uint64_t starty, uint64_t startx);
  21 }
  22
  23 Mainwindow::Mainwindow(InformationManager* mgr)
  24         : manager(mgr)
  25         , logger(log4cxx::Logger::getLogger("Mainwindow")) {
  26         openAction = new QAction(tr("&Open"), this);
  27         saveAction = new QAction(tr("&Save"), this);
  28         exitAction = new QAction(tr("E&xit"), this);
  29
  30         connect(openAction, SIGNAL(triggered()),
  31                 this, SLOT(open()));
  32         connect(saveAction, SIGNAL(triggered()),
  33                 this, SLOT(save()));
  34         connect(exitAction, SIGNAL(triggered()),
  35                 qApp, SLOT(quit()));
  36
  37         fileMenu = menuBar()->addMenu(tr("&File"));
  38         fileMenu->addAction(openAction);
  39         fileMenu->addAction(saveAction);
  40         fileMenu->addSeparator();
  41         fileMenu->addAction(exitAction);
  42
  43         scripting = new ScriptingDock(tr("Scripting"), this);
  44         scripting->setAllowedAreas(Qt::BottomDockWidgetArea);
  45         addDockWidget(Qt::BottomDockWidgetArea, scripting);
  46
  47         listWidget = new QTreeWidget();
  48         listWidget->setColumnCount(1);
  49         listWidget->setContextMenuPolicy(Qt::CustomContextMenu);
  50         connect(listWidget, SIGNAL(customContextMenuRequested(const QPoint&)),
  51                 this, SLOT(showListContextMenu(const QPoint&)));
  52
  53         stackedWidget = new QStackedWidget();
  54         dockWidget = new QDockWidget(tr("Functions"), this);
  55         dockWidget->setAllowedAreas(Qt::LeftDockWidgetArea |
  56                                     Qt::RightDockWidgetArea);
  57         dockWidget->setWidget(listWidget);
  58         addDockWidget(Qt::LeftDockWidgetArea, dockWidget);
  59         setCentralWidget(stackedWidget);
  60
  61         connect(listWidget, &QTreeWidget::currentItemChanged,
  62                 [=] (QTreeWidgetItem* current, QTreeWidgetItem*) {
  63                         switchMainPlane(current);
  64                 });
  65
  66         setWindowTitle(tr("FRIDA"));
  67
  68         QTreeWidgetItem * external = new QTreeWidgetItem(listWidget, QStringList("External Functions"));
  69         external->setChildIndicatorPolicy(QTreeWidgetItem::ShowIndicator);
  70         external->setBackground(0, QBrush(QColor(0xff, 0xdd, 0xdd)));
  71         mgr->connect_new_function_signal([&] (Function* fun) {addFunction(fun);});
  72         mgr->connect_new_dyn_symbol_signal([=] (const std::string& name) {
  73                         auto item = new QTreeWidgetItem(external, QStringList(name.c_str()));
  74                         item->setBackground(0, QBrush(QColor(0xff, 0xdd, 0xdd)));
  75                 });
  76         setGlobalHotkeys();
  77 }
  78
  79 void Mainwindow::setGlobalHotkeys() {
  80         QShortcut *shortcut = new QShortcut(QKeySequence("f"), this);
  81         connect(shortcut, &QShortcut::activated, this, &Mainwindow::requestNewFunction);
  82
  83         shortcut = new QShortcut(QKeySequence("r"), listWidget);
  84         connect(shortcut, &QShortcut::activated, [=]() {
  85                         QTreeWidgetItem * item = listWidget->currentItem();
  86                         if (item) renameFunction(objects_list[item]->getFunction());
  87                 });
  88 }
  89
  90 void Mainwindow::quit()
  91 {
  92         QMessageBox messageBox;
  93         messageBox.setWindowTitle(tr("Frida"));
  94         messageBox.setText(tr("Do you really want to quit?"));
  95         messageBox.setStandardButtons(QMessageBox::Yes | QMessageBox::No);
  96         messageBox.setDefaultButton(QMessageBox::No);
  97         if (messageBox.exec() == QMessageBox::Yes)
  98                 qApp->quit();
  99 }
 100
 101 void Mainwindow::open() {
 102         QString fileName = QFileDialog::getOpenFileName(this, tr("Open File"), "",
 103                                                         tr("Binaries (*)"));
 104
 105         manager->reset(fileName.toStdString());
 106 }
 107
 108 void Mainwindow::save() {
 109         QString filename = QFileDialog::getSaveFileName(this, tr("Save File"), "", tr("Frida Archives (*.frida)"));
 110         manager->save(filename);
 111 }
 112
 113 void Mainwindow::switchMainPlaneToAddress(uint64_t address) {
 114         if (objects_list_by_address.find(address) != objects_list_by_address.end()) {
 115                 LOG4CXX_DEBUG(logger, "Switching to function " << std::hex << address);
 116                 QTreeWidgetItem * item = objects_list_by_address[address];
 117                 listWidget->setCurrentItem(item);
 118                 stackedWidget->setCurrentWidget(objects_list[item]);
 119         } else {
 120                 LOG4CXX_DEBUG(logger, "No function at " << std::hex << address
 121                               << " -- it's probably an imported Symbol");
 122         }
 123 }
 124
 125 void Mainwindow::switchMainPlane(QTreeWidgetItem* to) {
 126         if (objects_list.end() != objects_list.find(to))
 127                 stackedWidget->setCurrentWidget(objects_list[to]);
 128 }
 129
 130 void Mainwindow::showListContextMenu(const QPoint& point) {
 131         QTreeWidgetItem * item = listWidget->itemAt(point);
 132         QMenu menu(this);
 133         if (item) {
 134                 QAction * act = menu.addAction("Rename Function");
 135                 connect(act, &QAction::triggered, [=]() {this->renameFunction(objects_list[item]->getFunction());});
 136         } else {
 137                 QAction * act = menu.addAction("AddFunction");
 138                 connect(act, SIGNAL(triggered()), this, SLOT(requestNewFunction()));
 139         }
 140         menu.exec(listWidget->mapToGlobal(point));
 141 }
 142
 143 void Mainwindow::requestNewFunction() {
 144         NewFunctionDialog dialog;
 145         int result = dialog.exec();
 146         if (QDialog::Accepted == result) {
 147                 requestNewFunctionByAddress(dialog.result());
 148         } else {
 149                 LOG4CXX_DEBUG(logger, "requestNewFunction aborted");
 150         }
 151 }
 152
 153 void Mainwindow::requestNewFunctionByAddress(uint64_t address) {
 154         LOG4CXX_DEBUG(logger, "requesting Function at " << std::hex << address);
 155         manager->getDisassembler()->disassembleFunctionAt(address);
 156         switchMainPlaneToAddress(address);
 157 }
 158
 159 void Mainwindow::renameFunction(Function* function) {
 160         SimpleStringDialog dialog("New name");
 161         int result = dialog.exec();
 162         if (QDialog::Accepted == result) {
 163                 LOG4CXX_DEBUG(logger, "renaming Function " << function->getName()
 164                               << " to " << dialog.result().toStdString());
 165                 function->setName(dialog.result().toStdString());
 166                 objects_list_by_address[function->getStartAddress()]->setText(0, dialog.result());
 167         } else {
 168                 LOG4CXX_DEBUG(logger, "renameFunction aborted");
 169         }
 170 }
 171
 172 void Mainwindow::addFunction(Function* fun) {
 173         if (functions.find(fun->getStartAddress()) != functions.end())
 174                 return;
 175
 176         functions.insert(std::make_pair(fun->getStartAddress(), fun));
 177
 178         FunctionWidget * w = new FunctionWidget(fun);
 179
 180         // CFG
 181         CFGScene * scene = new CFGScene;
 182
 183         BasicBlock * block = manager->getBasicBlock(fun->getStartAddress());
 184
 185         uint64_t start_address(std::numeric_limits<uint64_t>::max());
 186         for (auto b : fun->blocks()) {
 187                 if (b.first < start_address)
 188                         start_address = b.first;
 189         }
 190
 191         local__add_basic_block(block, this,
 192                                manager, blocks, scene, start_address, 100);
 193
 194         QGraphicsView * view = new QGraphicsView(scene);
 195         w->addTab(view, "CFG");
 196
 197         // Listing
 198         QTableWidget * t = new QTableWidget();
 199         t->setColumnCount(3);
 200         t->horizontalHeader()->setSectionResizeMode(QHeaderView::ResizeToContents);
 201
 202         w->addTab(t, "Listing");
 203
 204         QTreeWidgetItem * item = new QTreeWidgetItem(listWidget, QStringList(fun->getName().c_str()));
 205         stackedWidget->addWidget(w);
 206         objects_list.insert(std::make_pair(item, w));
 207         LOG4CXX_DEBUG(logger, "Adding function widget at " << std::hex
 208                       << fun->getStartAddress());
 209         objects_list_by_address.insert(std::make_pair(fun->getStartAddress(), item));
 210 }
 211
 212 namespace {
 213         BasicBlockWidget *
 214         local__add_basic_block(BasicBlock * block,
 215                                Mainwindow * mainwindow, InformationManager * manager,
 216                                std::map<uint64_t, BasicBlockWidget*>& known_blocks,
 217                                CFGScene * scene, uint64_t starty, uint64_t startx) {
 218
 219                 decltype(known_blocks.begin()) old;
 220                 if ((old = known_blocks.find(block->getStartAddress())) != known_blocks.end())
 221                         return old->second;
 222
 223                 std::stringstream s;
 224                 s << "BLOCK_" << std::hex << block->getStartAddress()
 225                   << "_" << block->getEndAddress();
 226                 BasicBlockWidget * widget = new BasicBlockWidget(s.str().c_str(),
 227                                                                  block, mainwindow);
 228
 229                 known_blocks.insert(std::make_pair(block->getStartAddress(), widget));
 230
 231                 scene->addItem(widget);
 232                 widget->setFlag(QGraphicsItem::ItemIsMovable, true);
 233                 widget->moveBy(100*startx, block->getStartAddress() - starty);
 234
 235                 manager->getDisassembler()
 236                         ->printEachInstruction(block->getStartAddress(),
 237                                                block->getEndAddress(),
 238                                                [&](uint8_t* bytes,
 239                                                    size_t byte_count,
 240                                                    const std::string& line,
 241                                                    const std::string& ref) {
 242                                                        widget->addItem(bytes, byte_count,
 243                                                                        line.c_str() + 1, // remove \t
 244                                                                        ref.c_str());
 245                                                });
 246
 247                 BasicBlockWidget *tmp, *nextl(NULL), *nextr(NULL);
 248                 BasicBlock * tmpblock;
 249                 if (block->getNextBlock(0) != 0) {
 250                         int xshift = 0;
 251                         if (block->getNextBlock(1) != 0)
 252                                 xshift = 1;
 253                         tmpblock = manager->getBasicBlock(block->getNextBlock(0));
 254                         tmp = local__add_basic_block(tmpblock, mainwindow, manager,
 255                                                      known_blocks,
 256                                                      scene, starty, startx+xshift);
 257                         nextl = tmp;
 258                         tmp->addPrevious(widget);
 259                 }
 260                 if (block->getNextBlock(1) != 0) {
 261                         tmpblock = manager->getBasicBlock(block->getNextBlock(1));
 262                         tmp = local__add_basic_block(tmpblock, mainwindow, manager,
 263                                                      known_blocks,
 264                                                      scene, starty, startx-1);
 265                         nextr = tmp;
 266                         tmp->addPrevious(widget);
 267                 }
 268                 widget->addNext(nextl, nextr);
 269                 return widget;
 270         }
 271 }