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