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,
  18                                Mainwindow * mainwindow, InformationManager * manager,
  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         loadAction = new QAction(tr("&Load"), this);
  28         saveAction = new QAction(tr("&Save"), this);
  29         exitAction = new QAction(tr("E&xit"), this);
  30
  31         connect(openAction, &QAction::triggered,
  32                 this, &Mainwindow::open);
  33         connect(loadAction, &QAction::triggered,
  34                 this, &Mainwindow::load);
  35         connect(saveAction, &QAction::triggered,
  36                 this, &Mainwindow::save);
  37         connect(exitAction, &QAction::triggered,
  38                 qApp, &QApplication::quit);
  39
  40         fileMenu = menuBar()->addMenu(tr("&File"));
  41         fileMenu->addAction(openAction);
  42         fileMenu->addAction(loadAction);
  43         fileMenu->addAction(saveAction);
  44         fileMenu->addSeparator();
  45         fileMenu->addAction(exitAction);
  46
  47         scripting = new ScriptingDock(tr("Scripting"), this);
  48         scripting->setAllowedAreas(Qt::BottomDockWidgetArea);
  49         addDockWidget(Qt::BottomDockWidgetArea, scripting);
  50
  51         listWidget = new QTreeWidget();
  52         listWidget->setColumnCount(1);
  53         listWidget->setDragDropMode(QAbstractItemView::InternalMove);
  54         listWidget->setContextMenuPolicy(Qt::CustomContextMenu);
  55         connect(listWidget, SIGNAL(customContextMenuRequested(const QPoint&)),
  56                 this, SLOT(showListContextMenu(const QPoint&)));
  57
  58         stackedWidget = new QStackedWidget();
  59         dockWidget = new QDockWidget(tr("Functions"), this);
  60         dockWidget->setAllowedAreas(Qt::LeftDockWidgetArea |
  61                                     Qt::RightDockWidgetArea);
  62         dockWidget->setWidget(listWidget);
  63         addDockWidget(Qt::LeftDockWidgetArea, dockWidget);
  64         setCentralWidget(stackedWidget);
  65
  66         connect(listWidget, &QTreeWidget::currentItemChanged,
  67                 [=] (QTreeWidgetItem* current, QTreeWidgetItem*) {
  68                         switchMainPlane(current);
  69                 });
  70
  71         setWindowTitle(tr("FRIDA"));
  72
  73         QTreeWidgetItem * external = new QTreeWidgetItem(listWidget, QStringList("External Functions"));
  74         external->setChildIndicatorPolicy(QTreeWidgetItem::ShowIndicator);
  75         external->setBackground(0, QBrush(QColor(0xff, 0xdd, 0xdd)));
  76         mgr->connect_new_function_signal([&] (Function* fun) {addFunction(fun);});
  77         mgr->connect_new_dyn_symbol_signal([=] (const std::string& name) {
  78                         auto item = new QTreeWidgetItem(external, QStringList(name.c_str()));
  79                         item->setBackground(0, QBrush(QColor(0xff, 0xdd, 0xdd)));
  80                 });
  81         setGlobalHotkeys();
  82 }
  83
  84 void Mainwindow::setGlobalHotkeys() {
  85         QShortcut *shortcut = new QShortcut(QKeySequence("f"), this);
  86         connect(shortcut, &QShortcut::activated, this, &Mainwindow::requestNewFunction);
  87
  88         shortcut = new QShortcut(QKeySequence("r"), listWidget);
  89         connect(shortcut, &QShortcut::activated, [=]() {
  90                         QTreeWidgetItem * item = listWidget->currentItem();
  91                         if (item) renameFunction(objects_list[item]->getFunction());
  92                 });
  93 }
  94
  95 void Mainwindow::quit()
  96 {
  97         QMessageBox messageBox;
  98         messageBox.setWindowTitle(tr("Frida"));
  99         messageBox.setText(tr("Do you really want to quit?"));
 100         messageBox.setStandardButtons(QMessageBox::Yes | QMessageBox::No);
 101         messageBox.setDefaultButton(QMessageBox::No);
 102         if (messageBox.exec() == QMessageBox::Yes)
 103                 qApp->quit();
 104 }
 105
 106 void Mainwindow::open() {
 107         QString fileName = QFileDialog::getOpenFileName(this, tr("Open File"), "",
 108                                                         tr("Binaries (*)"));
 109         manager->reset(fileName.toStdString());
 110 }
 111
 112 void Mainwindow::load() {
 113         QString fileName = QFileDialog::getOpenFileName(this, tr("Open File"), "",
 114                                                         tr("Frida Archives (*.frida)"));
 115         manager->load(fileName.toStdString());
 116 }
 117
 118 void Mainwindow::save() {
 119         QString filename = QFileDialog::getSaveFileName(this, tr("Save File"), "", tr("Frida Archives (*.frida)"));
 120         manager->save(filename.toStdString());
 121 }
 122
 123 void Mainwindow::switchMainPlaneToAddress(uint64_t address) {
 124         if (objects_list_by_address.find(address) != objects_list_by_address.end()) {
 125                 LOG4CXX_DEBUG(logger, "Switching to function " << std::hex << address);
 126                 QTreeWidgetItem * item = objects_list_by_address[address];
 127                 listWidget->setCurrentItem(item);
 128                 stackedWidget->setCurrentWidget(objects_list[item]);
 129         } else {
 130                 LOG4CXX_DEBUG(logger, "No function at " << std::hex << address
 131                               << " -- it's probably an imported Symbol");
 132         }
 133 }
 134
 135 void Mainwindow::switchMainPlane(QTreeWidgetItem* to) {
 136         if (objects_list.end() != objects_list.find(to))
 137                 stackedWidget->setCurrentWidget(objects_list[to]);
 138 }
 139
 140 void Mainwindow::showListContextMenu(const QPoint& point) {
 141         QAction * act;
 142         QTreeWidgetItem * item = listWidget->itemAt(point);
 143         QMenu menu(this);
 144
 145         act = menu.addAction("Add Function");
 146         connect(act, &QAction::triggered, this, &Mainwindow::requestNewFunction);
 147
 148         act = menu.addAction("Add Group");
 149         connect(act, &QAction::triggered, this, &Mainwindow::requestNewGroup);
 150
 151         if (item) {
 152                 if (objects_list.find(item) != objects_list.end()) {
 153                         act = menu.addAction("Rename Function");
 154                         connect(act, &QAction::triggered, [=]() {this->renameFunction(objects_list[item]->getFunction());});
 155                 } else {
 156                         act = menu.addAction("Rename Group");
 157                         connect(act, &QAction::triggered, [=]() {renameGroup(item);});
 158                 }
 159
 160
 161                 QMenu* submenu = menu.addMenu("Move to group");
 162
 163                 for (QTreeWidgetItem* groupitem : group_list) {
 164                         act = submenu->addAction(groupitem->text(0));
 165                         connect(act, &QAction::triggered,
 166                                 [=] () {
 167                                         listWidget->invisibleRootItem()->removeChild(item);
 168                                         groupitem->addChild(item);
 169                                 });
 170                 }
 171         }
 172
 173         menu.exec(listWidget->mapToGlobal(point));
 174 }
 175
 176 void Mainwindow::requestNewFunction() {
 177         NewFunctionDialog dialog;
 178         int result = dialog.exec();
 179         if (QDialog::Accepted == result) {
 180                 requestNewFunctionByAddress(dialog.result());
 181         } else {
 182                 LOG4CXX_DEBUG(logger, "requestNewFunction aborted");
 183         }
 184 }
 185
 186 void Mainwindow::requestNewGroup() {
 187         SimpleStringDialog dialog("New Group");
 188         int result = dialog.exec();
 189         if (QDialog::Accepted == result) {
 190                 QTreeWidgetItem * external = new QTreeWidgetItem(listWidget, QStringList(dialog.result()));
 191                 external->setChildIndicatorPolicy(QTreeWidgetItem::ShowIndicator);
 192                 group_list.push_back(external);
 193         } else {
 194                 LOG4CXX_DEBUG(logger, "requestNewGroup aborted");
 195         }
 196 }
 197
 198 void Mainwindow::requestNewFunctionByAddress(uint64_t address) {
 199         LOG4CXX_DEBUG(logger, "requesting Function at " << std::hex << address);
 200         manager->getDisassembler()->disassembleFunctionAt(address);
 201         switchMainPlaneToAddress(address);
 202 }
 203
 204 void Mainwindow::renameFunction(Function* function) {
 205         SimpleStringDialog dialog("New name");
 206         int result = dialog.exec();
 207         if (QDialog::Accepted == result) {
 208                 LOG4CXX_DEBUG(logger, "renaming Function " << function->getName()
 209                               << " to " << dialog.result().toStdString());
 210                 function->setName(dialog.result().toStdString());
 211                 objects_list_by_address[function->getStartAddress()]->setText(0, dialog.result());
 212         } else {
 213                 LOG4CXX_DEBUG(logger, "renameFunction aborted");
 214         }
 215 }
 216
 217 void Mainwindow::renameGroup(QTreeWidgetItem* item) {
 218         SimpleStringDialog dialog("New name");
 219         int result = dialog.exec();
 220         if (QDialog::Accepted == result) {
 221                 LOG4CXX_DEBUG(logger, "renaming group " << item->text(0).toStdString()
 222                               << " to " << dialog.result().toStdString());
 223                 item->setText(0, dialog.result());
 224         } else {
 225                 LOG4CXX_DEBUG(logger, "renameFunction aborted");
 226         }
 227 }
 228
 229 void Mainwindow::addFunction(Function* fun) {
 230         if (functions.find(fun->getStartAddress()) != functions.end())
 231                 return;
 232
 233         functions.insert(std::make_pair(fun->getStartAddress(), fun));
 234
 235         FunctionWidget * w = new FunctionWidget(fun);
 236
 237         // CFG
 238         CFGScene * scene = new CFGScene;
 239
 240         BasicBlock * block = manager->getBasicBlock(fun->getStartAddress());
 241
 242         uint64_t start_address(std::numeric_limits<uint64_t>::max());
 243         for (auto b : fun->blocks()) {
 244                 if (b.first < start_address)
 245                         start_address = b.first;
 246         }
 247
 248         local__add_basic_block(block, this,
 249                                manager, blocks, scene, start_address, 100);
 250
 251         QGraphicsView * view = new QGraphicsView(scene);
 252         w->addTab(view, "CFG");
 253
 254         // Listing
 255         QTableWidget * t = new QTableWidget();
 256         t->setColumnCount(3);
 257         t->horizontalHeader()->setSectionResizeMode(QHeaderView::ResizeToContents);
 258
 259         w->addTab(t, "Listing");
 260
 261         QTreeWidgetItem * item = new QTreeWidgetItem(listWidget, QStringList(fun->getName().c_str()));
 262         stackedWidget->addWidget(w);
 263         objects_list.insert(std::make_pair(item, w));
 264         LOG4CXX_DEBUG(logger, "Adding function widget at " << std::hex
 265                       << fun->getStartAddress());
 266         objects_list_by_address.insert(std::make_pair(fun->getStartAddress(), item));
 267 }
 268
 269 namespace {
 270         BasicBlockWidget *
 271         local__add_basic_block(BasicBlock * block,
 272                                Mainwindow * mainwindow, InformationManager * manager,
 273                                std::map<uint64_t, BasicBlockWidget*>& known_blocks,
 274                                CFGScene * scene, uint64_t starty, uint64_t startx) {
 275
 276                 decltype(known_blocks.begin()) old;
 277                 if ((old = known_blocks.find(block->getStartAddress())) != known_blocks.end())
 278                         return old->second;
 279
 280                 std::stringstream s;
 281                 s << "BLOCK_" << std::hex << block->getStartAddress()
 282                   << "_" << block->getEndAddress();
 283                 BasicBlockWidget * widget = new BasicBlockWidget(s.str().c_str(),
 284                                                                  block, mainwindow);
 285
 286                 known_blocks.insert(std::make_pair(block->getStartAddress(), widget));
 287
 288                 scene->addItem(widget);
 289                 widget->setFlag(QGraphicsItem::ItemIsMovable, true);
 290                 widget->moveBy(100*startx, block->getStartAddress() - starty);
 291
 292                 manager->getDisassembler()
 293                         ->printEachInstruction(block->getStartAddress(),
 294                                                block->getEndAddress(),
 295                                                [&](uint8_t* bytes,
 296                                                    size_t byte_count,
 297                                                    const std::string& line,
 298                                                    const std::string& ref) {
 299                                                        widget->addItem(bytes, byte_count,
 300                                                                        line.c_str() + 1, // remove \t
 301                                                                        ref.c_str());
 302                                                });
 303
 304                 BasicBlockWidget *tmp, *nextl(NULL), *nextr(NULL);
 305                 BasicBlock * tmpblock;
 306                 if (block->getNextBlock(0) != 0) {
 307                         int xshift = 0;
 308                         if (block->getNextBlock(1) != 0)
 309                                 xshift = 1;
 310                         tmpblock = manager->getBasicBlock(block->getNextBlock(0));
 311                         tmp = local__add_basic_block(tmpblock, mainwindow, manager,
 312                                                      known_blocks,
 313                                                      scene, starty, startx+xshift);
 314                         nextl = tmp;
 315                         tmp->addPrevious(widget);
 316                 }
 317                 if (block->getNextBlock(1) != 0) {
 318                         tmpblock = manager->getBasicBlock(block->getNextBlock(1));
 319                         tmp = local__add_basic_block(tmpblock, mainwindow, manager,
 320                                                      known_blocks,
 321                                                      scene, starty, startx-1);
 322                         nextr = tmp;
 323                         tmp->addPrevious(widget);
 324                 }
 325                 widget->addNext(nextl, nextr);
 326                 return widget;
 327         }
 328 }