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