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