src/gui/Mainwindow.cxx

   1 #include "Mainwindow.hxx"
   2 #include "qt.hxx"
   3 #include "disassembler/llvm/LLVMDisassembler.hxx"
   4
   5 #include "widgets/CFGScene.hxx"
   6 #include "dialogs/NewFunctionDialog.hxx"
   7
   8 #include <sstream>
   9
  10 namespace {
  11         BasicBlockWidget *
  12         local__add_basic_block(BasicBlock * block, Disassembler * dis,
  13                                std::map<uint64_t, BasicBlockWidget*>& known_blocks,
  14                                CFGScene * scene, uint64_t starty, uint64_t startx);
  15 }
  16
  17 Mainwindow::Mainwindow(InformationManager* mgr)
  18         : manager(mgr)
  19         , logger(log4cxx::Logger::getLogger("Mainwindow")) {
  20         openAction = new QAction(tr("&Open"), this);
  21         // saveAction = new QAction(tr("&Save"), this);
  22         exitAction = new QAction(tr("E&xit"), this);
  23
  24         connect(openAction, SIGNAL(triggered()),
  25                 this, SLOT(open()));
  26         // connect(saveAction, SIGNAL(triggered()), this, SLOT(save()));
  27         connect(exitAction, SIGNAL(triggered()),
  28                 qApp, SLOT(quit()));
  29
  30         fileMenu = menuBar()->addMenu(tr("&File"));
  31         fileMenu->addAction(openAction);
  32         // fileMenu->addAction(saveAction);
  33         fileMenu->addSeparator();
  34         fileMenu->addAction(exitAction);
  35
  36         scripting = new ScriptingDock(tr("Scripting"), this);
  37         scripting->setAllowedAreas(Qt::BottomDockWidgetArea);
  38         addDockWidget(Qt::BottomDockWidgetArea, scripting);
  39
  40         listWidget = new QListWidget();
  41         listWidget->setContextMenuPolicy(Qt::CustomContextMenu);
  42         connect(listWidget, SIGNAL(customContextMenuRequested(const QPoint&)),
  43                 this, SLOT(showListContextMenu(const QPoint&)));
  44
  45         stackedWidget = new QStackedWidget();
  46         dockWidget = new QDockWidget(tr("Functions"), this);
  47         dockWidget->setAllowedAreas(Qt::LeftDockWidgetArea |
  48                                     Qt::RightDockWidgetArea);
  49         dockWidget->setWidget(listWidget);
  50         addDockWidget(Qt::LeftDockWidgetArea, dockWidget);
  51         setCentralWidget(stackedWidget);
  52
  53         connect(listWidget, SIGNAL(currentRowChanged(int)),
  54                 this, SLOT(switchMainPlane(int)));
  55
  56         setWindowTitle(tr("FRIDA"));
  57
  58         mgr->connect_new_function_signal([&] (Function* fun) {addFunction(fun);});
  59         mgr->connect_new_dyn_symbol_signal([&] (const std::string& name) {
  60                         auto item = new QListWidgetItem(name.c_str(), listWidget);
  61                         item->setBackground(QBrush(QColor(0xff, 0xdd, 0xdd)));
  62                 });
  63 }
  64
  65 void Mainwindow::quit()
  66 {
  67         QMessageBox messageBox;
  68         messageBox.setWindowTitle(tr("Frida"));
  69         messageBox.setText(tr("Do you really want to quit?"));
  70         messageBox.setStandardButtons(QMessageBox::Yes | QMessageBox::No);
  71         messageBox.setDefaultButton(QMessageBox::No);
  72         if (messageBox.exec() == QMessageBox::Yes)
  73                 qApp->quit();
  74 }
  75
  76 void Mainwindow::open() {
  77         QString fileName = QFileDialog::getOpenFileName(this, tr("Open File"), "",
  78                                                         tr("Binaries (*)"));
  79
  80         manager->reset(fileName.toStdString());
  81 }
  82
  83 void Mainwindow::switchMainPlane(int index) {
  84         stackedWidget->setCurrentWidget(objects_list[listWidget->currentItem()]);
  85 }
  86
  87 void Mainwindow::showListContextMenu(const QPoint& point) {
  88         QListWidgetItem * item = listWidget->itemAt(point);
  89         if (item) {
  90                 LOG4CXX_DEBUG(logger, "WOHO " << item->text().toStdString());
  91         } else {
  92                 QMenu menu(this);
  93                 QAction * act = menu.addAction("AddFunction");
  94                 connect(act, SIGNAL(triggered()), this, SLOT(requestNewFunction()));
  95
  96                 menu.exec(listWidget->mapToGlobal(point));
  97         }
  98 }
  99
 100 void Mainwindow::requestNewFunction() {
 101         NewFunctionDialog dialog;
 102         int result = dialog.exec();
 103         if (QDialog::Accepted == result) {
 104                 LOG4CXX_DEBUG(logger, "requesting Function at " << std::hex << dialog.result());
 105                 manager->getDisassembler()->disassembleFunctionAt(dialog.result());
 106         } else {
 107                 LOG4CXX_DEBUG(logger, "requestNewFunction aborted");
 108         }
 109 }
 110
 111 void Mainwindow::addFunction(Function* fun) {
 112         if (functions.find(fun) != functions.end())
 113                 return;
 114
 115         functions.insert(fun);
 116
 117         QTabWidget * w = new QTabWidget();
 118
 119         // CFG
 120         CFGScene * scene = new CFGScene;
 121
 122         Disassembler * dis = manager->getDisassembler();
 123         BasicBlock * block = dis->getBasicBlock(fun->getStartAddress());
 124
 125         uint64_t start_address(std::numeric_limits<uint64_t>::max());
 126         for (auto b : fun->blocks()) {
 127                 if (b.first < start_address)
 128                         start_address = b.first;
 129         }
 130
 131         local__add_basic_block(block, manager->getDisassembler(), blocks, scene,
 132                                start_address, 100);
 133
 134         QGraphicsView * view = new QGraphicsView(scene);
 135         w->addTab(view, "CFG");
 136
 137         // Listing
 138         QTableWidget * t = new QTableWidget();
 139         t->setColumnCount(3);
 140         t->horizontalHeader()->setSectionResizeMode(QHeaderView::ResizeToContents);
 141
 142         w->addTab(t, "Listing");
 143
 144         QListWidgetItem * item = new QListWidgetItem(fun->getName().c_str(), listWidget);
 145         stackedWidget->addWidget(w);
 146         objects_list.insert(std::make_pair(item, w));
 147 }
 148
 149 namespace {
 150         BasicBlockWidget *
 151         local__add_basic_block(BasicBlock * block, Disassembler * dis,
 152                                std::map<uint64_t, BasicBlockWidget*>& known_blocks,
 153                                CFGScene * scene, uint64_t starty, uint64_t startx) {
 154
 155                 decltype(known_blocks.begin()) old;
 156                 if ((old = known_blocks.find(block->getStartAddress())) != known_blocks.end())
 157                         return old->second;
 158
 159                 std::stringstream s;
 160                 s << "BLOCK_" << std::hex << block->getStartAddress()
 161                   << "_" << block->getEndAddress();
 162                 BasicBlockWidget * widget = new BasicBlockWidget(s.str().c_str(), block);
 163
 164                 known_blocks.insert(std::make_pair(block->getStartAddress(), widget));
 165
 166                 scene->addItem(widget);
 167                 widget->setFlag(QGraphicsItem::ItemIsMovable, true);
 168                 widget->moveBy(100*startx, block->getStartAddress() - starty);
 169
 170                 dis->printEachInstruction(block->getStartAddress(),
 171                                           block->getEndAddress(),
 172                                           [&](uint8_t* bytes,
 173                                               size_t byte_count,
 174                                               const std::string& line,
 175                                               const std::string& ref) {
 176                                                   widget->addItem(bytes, byte_count,
 177                                                                   line.c_str() + 1, // remove \t
 178                                                                   ref.c_str());
 179                                           });
 180
 181                 BasicBlockWidget *tmp, *nextl(NULL), *nextr(NULL);
 182                 BasicBlock * tmpblock;
 183                 if (block->getNextBlock(0) != 0) {
 184                         int xshift = 0;
 185                         if (block->getNextBlock(1) != 0)
 186                                 xshift = 1;
 187                         tmpblock = dis->getBasicBlock(block->getNextBlock(0));
 188                         tmp = local__add_basic_block(tmpblock, dis,
 189                                                      known_blocks,
 190                                                      scene, starty, startx+xshift);
 191                         nextl = tmp;
 192                         tmp->addPrevious(widget);
 193                 }
 194                 if (block->getNextBlock(1) != 0) {
 195                         tmpblock = dis->getBasicBlock(block->getNextBlock(1));
 196                         tmp = local__add_basic_block(tmpblock, dis,
 197                                                      known_blocks,
 198                                                      scene, starty, startx-1);
 199                         nextr = tmp;
 200                         tmp->addPrevious(widget);
 201                 }
 202                 widget->addNext(nextl, nextr);
 203                 return widget;
 204         }
 205 }