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 "dialogs/NewFunctionDialog.hxx"
  10 #include "dialogs/SimpleStringDialog.hxx"
  11
  12 #include <sstream>
  13
  14 namespace {
  15         BasicBlockWidget *
  16         local__add_basic_block(BasicBlock * block, Disassembler * dis,
  17                                Mainwindow * mainwindow,
  18                                std::map<uint64_t, BasicBlockWidget*>& known_blocks,
  19                                CFGScene * scene, uint64_t starty, uint64_t startx);
  20 }
  21
  22 Mainwindow::Mainwindow(InformationManager* mgr)
  23         : manager(mgr)
  24         , logger(log4cxx::Logger::getLogger("Mainwindow")) {
  25         openAction = new QAction(tr("&Open"), this);
  26         saveAction = new QAction(tr("&Save"), this);
  27         exitAction = new QAction(tr("E&xit"), this);
  28
  29         connect(openAction, SIGNAL(triggered()),
  30                 this, SLOT(open()));
  31         connect(saveAction, SIGNAL(triggered()),
  32                 this, SLOT(save()));
  33         connect(exitAction, SIGNAL(triggered()),
  34                 qApp, SLOT(quit()));
  35
  36         fileMenu = menuBar()->addMenu(tr("&File"));
  37         fileMenu->addAction(openAction);
  38         fileMenu->addAction(saveAction);
  39         fileMenu->addSeparator();
  40         fileMenu->addAction(exitAction);
  41
  42         scripting = new ScriptingDock(tr("Scripting"), this);
  43         scripting->setAllowedAreas(Qt::BottomDockWidgetArea);
  44         addDockWidget(Qt::BottomDockWidgetArea, scripting);
  45
  46         listWidget = new QListWidget();
  47         listWidget->setContextMenuPolicy(Qt::CustomContextMenu);
  48         connect(listWidget, SIGNAL(customContextMenuRequested(const QPoint&)),
  49                 this, SLOT(showListContextMenu(const QPoint&)));
  50
  51         stackedWidget = new QStackedWidget();
  52         dockWidget = new QDockWidget(tr("Functions"), this);
  53         dockWidget->setAllowedAreas(Qt::LeftDockWidgetArea |
  54                                     Qt::RightDockWidgetArea);
  55         dockWidget->setWidget(listWidget);
  56         addDockWidget(Qt::LeftDockWidgetArea, dockWidget);
  57         setCentralWidget(stackedWidget);
  58
  59         connect(listWidget, SIGNAL(currentRowChanged(int)),
  60                 this, SLOT(switchMainPlane(int)));
  61
  62         setWindowTitle(tr("FRIDA"));
  63
  64         mgr->connect_new_function_signal([&] (Function* fun) {addFunction(fun);});
  65         mgr->connect_new_dyn_symbol_signal([&] (const std::string& name) {
  66                         auto item = new QListWidgetItem(name.c_str(), listWidget);
  67                         item->setBackground(QBrush(QColor(0xff, 0xdd, 0xdd)));
  68                 });
  69         setGlobalHotkeys();
  70 }
  71
  72 void Mainwindow::setGlobalHotkeys() {
  73         QShortcut *shortcut = new QShortcut(QKeySequence("f"), this);
  74         connect(shortcut, &QShortcut::activated, this, &Mainwindow::requestNewFunction);
  75
  76         shortcut = new QShortcut(QKeySequence("r"), listWidget);
  77         connect(shortcut, &QShortcut::activated, [=]() {
  78                         QListWidgetItem * item = listWidget->currentItem();
  79                         if (item) renameFunction(item);
  80                 });
  81 }
  82
  83 void Mainwindow::quit()
  84 {
  85         QMessageBox messageBox;
  86         messageBox.setWindowTitle(tr("Frida"));
  87         messageBox.setText(tr("Do you really want to quit?"));
  88         messageBox.setStandardButtons(QMessageBox::Yes | QMessageBox::No);
  89         messageBox.setDefaultButton(QMessageBox::No);
  90         if (messageBox.exec() == QMessageBox::Yes)
  91                 qApp->quit();
  92 }
  93
  94 void Mainwindow::open() {
  95         QString fileName = QFileDialog::getOpenFileName(this, tr("Open File"), "",
  96                                                         tr("Binaries (*)"));
  97
  98         manager->reset(fileName.toStdString());
  99 }
 100
 101 void Mainwindow::save() {
 102         QString filename = QFileDialog::getSaveFileName(this, tr("Save File"), "", tr("Frida Archives (*.frida)"));
 103         manager->save(filename);
 104 }
 105
 106 void Mainwindow::switchMainPlaneToAddress(uint64_t address) {
 107         if (objects_list_by_address.find(address) != objects_list_by_address.end()) {
 108                 LOG4CXX_DEBUG(logger, "Switching to function " << std::hex << address);
 109                 QListWidgetItem * item = objects_list_by_address[address];
 110                 listWidget->setCurrentItem(item);
 111                 stackedWidget->setCurrentWidget(objects_list[item]);
 112         } else {
 113                 LOG4CXX_DEBUG(logger, "No function at " << std::hex << address
 114                               << " -- it's probably an imported Symbol");
 115         }
 116 }
 117
 118 void Mainwindow::switchMainPlane(int index) {
 119         stackedWidget->setCurrentWidget(objects_list[listWidget->currentItem()]);
 120 }
 121
 122 void Mainwindow::showListContextMenu(const QPoint& point) {
 123         QListWidgetItem * item = listWidget->itemAt(point);
 124         QMenu menu(this);
 125         if (item) {
 126                 QAction * act = menu.addAction("Rename Function");
 127                 connect(act, &QAction::triggered, [=]() {this->renameFunction(item);});
 128         } else {
 129                 QAction * act = menu.addAction("AddFunction");
 130                 connect(act, SIGNAL(triggered()), this, SLOT(requestNewFunction()));
 131         }
 132         menu.exec(listWidget->mapToGlobal(point));
 133 }
 134
 135 void Mainwindow::requestNewFunction() {
 136         NewFunctionDialog dialog;
 137         int result = dialog.exec();
 138         if (QDialog::Accepted == result) {
 139                 requestNewFunctionByAddress(dialog.result());
 140         } else {
 141                 LOG4CXX_DEBUG(logger, "requestNewFunction aborted");
 142         }
 143 }
 144
 145 void Mainwindow::requestNewFunctionByAddress(uint64_t address) {
 146         LOG4CXX_DEBUG(logger, "requesting Function at " << std::hex << address);
 147         manager->getDisassembler()->disassembleFunctionAt(address);
 148         switchMainPlaneToAddress(address);
 149 }
 150
 151 void Mainwindow::renameFunction(QListWidgetItem * item) {
 152         SimpleStringDialog dialog("New name");
 153         int result = dialog.exec();
 154         if (QDialog::Accepted == result) {
 155                 LOG4CXX_DEBUG(logger, "renaming Function " << item->text().toStdString()
 156                               << " to " << dialog.result().toStdString());
 157                 item->setText(dialog.result());
 158         } else {
 159                 LOG4CXX_DEBUG(logger, "renameFunction aborted");
 160         }
 161 }
 162
 163 void Mainwindow::addFunction(Function* fun) {
 164         if (functions.find(fun) != functions.end())
 165                 return;
 166
 167         functions.insert(fun);
 168
 169         QTabWidget * w = new QTabWidget();
 170
 171         // CFG
 172         CFGScene * scene = new CFGScene;
 173
 174         Disassembler * dis = manager->getDisassembler();
 175         BasicBlock * block = dis->getBasicBlock(fun->getStartAddress());
 176
 177         uint64_t start_address(std::numeric_limits<uint64_t>::max());
 178         for (auto b : fun->blocks()) {
 179                 if (b.first < start_address)
 180                         start_address = b.first;
 181         }
 182
 183         local__add_basic_block(block, manager->getDisassembler(), this,
 184                                blocks, scene, start_address, 100);
 185
 186         QGraphicsView * view = new QGraphicsView(scene);
 187         w->addTab(view, "CFG");
 188
 189         // Listing
 190         QTableWidget * t = new QTableWidget();
 191         t->setColumnCount(3);
 192         t->horizontalHeader()->setSectionResizeMode(QHeaderView::ResizeToContents);
 193
 194         w->addTab(t, "Listing");
 195
 196         QListWidgetItem * item = new QListWidgetItem(fun->getName().c_str(), listWidget);
 197         stackedWidget->addWidget(w);
 198         objects_list.insert(std::make_pair(item, w));
 199         LOG4CXX_DEBUG(logger, "Adding function widget at " << std::hex
 200                       << fun->getStartAddress());
 201         objects_list_by_address.insert(std::make_pair(fun->getStartAddress(), item));
 202 }
 203
 204 namespace {
 205         BasicBlockWidget *
 206         local__add_basic_block(BasicBlock * block, Disassembler * dis,
 207                                Mainwindow * mainwindow,
 208                                std::map<uint64_t, BasicBlockWidget*>& known_blocks,
 209                                CFGScene * scene, uint64_t starty, uint64_t startx) {
 210
 211                 decltype(known_blocks.begin()) old;
 212                 if ((old = known_blocks.find(block->getStartAddress())) != known_blocks.end())
 213                         return old->second;
 214
 215                 std::stringstream s;
 216                 s << "BLOCK_" << std::hex << block->getStartAddress()
 217                   << "_" << block->getEndAddress();
 218                 BasicBlockWidget * widget = new BasicBlockWidget(s.str().c_str(),
 219                                                                  block, mainwindow);
 220
 221                 known_blocks.insert(std::make_pair(block->getStartAddress(), widget));
 222
 223                 scene->addItem(widget);
 224                 widget->setFlag(QGraphicsItem::ItemIsMovable, true);
 225                 widget->moveBy(100*startx, block->getStartAddress() - starty);
 226
 227                 dis->printEachInstruction(block->getStartAddress(),
 228                                           block->getEndAddress(),
 229                                           [&](uint8_t* bytes,
 230                                               size_t byte_count,
 231                                               const std::string& line,
 232                                               const std::string& ref) {
 233                                                   widget->addItem(bytes, byte_count,
 234                                                                   line.c_str() + 1, // remove \t
 235                                                                   ref.c_str());
 236                                           });
 237
 238                 BasicBlockWidget *tmp, *nextl(NULL), *nextr(NULL);
 239                 BasicBlock * tmpblock;
 240                 if (block->getNextBlock(0) != 0) {
 241                         int xshift = 0;
 242                         if (block->getNextBlock(1) != 0)
 243                                 xshift = 1;
 244                         tmpblock = dis->getBasicBlock(block->getNextBlock(0));
 245                         tmp = local__add_basic_block(tmpblock, dis,
 246                                                      mainwindow,
 247                                                      known_blocks,
 248                                                      scene, starty, startx+xshift);
 249                         nextl = tmp;
 250                         tmp->addPrevious(widget);
 251                 }
 252                 if (block->getNextBlock(1) != 0) {
 253                         tmpblock = dis->getBasicBlock(block->getNextBlock(1));
 254                         tmp = local__add_basic_block(tmpblock, dis,
 255                                                      mainwindow,
 256                                                      known_blocks,
 257                                                      scene, starty, startx-1);
 258                         nextr = tmp;
 259                         tmp->addPrevious(widget);
 260                 }
 261                 widget->addNext(nextl, nextr);
 262                 return widget;
 263         }
 264 }