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