src/gui/Mainwindow.cxx

   1 #include "Mainwindow.hxx"
   2 #include "qt.hxx"
   3 #include "bindings/Guile.hxx"
   4 #include "disassembler/llvm/LLVMDisassembler.hxx"
   5 #include "core/Function.hxx"
   6 #include "core/BasicBlock.hxx"
   7 #include "core/InformationManager.hxx"
   8 #include "core/events/RenameFunctionEvent.hxx"
   9 #include "widgets/ScriptingDock.hxx"
  10 #include "widgets/CFGScene.hxx"
  11 #include "widgets/FunctionWidget.hxx"
  12 #include "dialogs/NewFunctionDialog.hxx"
  13 #include "dialogs/SimpleStringDialog.hxx"
  14
  15 #include <sstream>
  16
  17 namespace {
  18         BasicBlockWidget *
  19         local__add_basic_block(BasicBlock * block,
  20                                Mainwindow * mainwindow, InformationManager * manager,
  21                                std::map<uint64_t, BasicBlockWidget*>& known_blocks,
  22                                CFGScene * scene, uint64_t starty, uint64_t startx);
  23 }
  24
  25 Mainwindow::Mainwindow(InformationManager* mgr)
  26         : manager(mgr)
  27         , logger(log4cxx::Logger::getLogger("Mainwindow")) {
  28         openAction = new QAction(tr("&Open"), this);
  29         loadAction = new QAction(tr("&Load"), this);
  30         saveAction = new QAction(tr("&Save"), this);
  31         exitAction = new QAction(tr("E&xit"), this);
  32
  33         connect(openAction, &QAction::triggered,
  34                 this, &Mainwindow::open);
  35         connect(loadAction, &QAction::triggered,
  36                 this, &Mainwindow::load);
  37         connect(saveAction, &QAction::triggered,
  38                 this, &Mainwindow::save);
  39         connect(exitAction, &QAction::triggered,
  40                 qApp, &QApplication::quit);
  41
  42         fileMenu = menuBar()->addMenu(tr("&File"));
  43         fileMenu->addAction(openAction);
  44         fileMenu->addAction(loadAction);
  45         fileMenu->addAction(saveAction);
  46         fileMenu->addSeparator();
  47         fileMenu->addAction(exitAction);
  48
  49         QMenu* interpretermenu = menuBar()->addMenu(tr("&Interpreter"));
  50
  51         interpreter["GUILE"] = new GuileInterpreter;
  52         scripting = new ScriptingDock(interpreter["GUILE"], tr("Scripting"), this);
  53         scripting->setAllowedAreas(Qt::BottomDockWidgetArea);
  54         addDockWidget(Qt::BottomDockWidgetArea, scripting);
  55         QAction* guileLoad = new QAction(tr("&GUILE"), this);
  56         interpretermenu->addAction(guileLoad);
  57         connect(guileLoad, &QAction::triggered,
  58                 [&]() {
  59                         QString fileName = QFileDialog::getOpenFileName(this, tr("Open Script"), "",
  60                                                                         tr("Binaries") + " (*." +
  61                                                                         interpreter["GUILE"]->fileExtension().c_str() + ")");
  62                         std::stringstream a, b;
  63                         std::string c;
  64                         interpreter["GUILE"]->loadFile(fileName.toStdString(), a, b, c);
  65                 });
  66
  67         listWidget = new QTreeWidget();
  68         listWidget->setColumnCount(1);
  69         listWidget->setDragDropMode(QAbstractItemView::InternalMove);
  70         listWidget->setContextMenuPolicy(Qt::CustomContextMenu);
  71         connect(listWidget, SIGNAL(customContextMenuRequested(const QPoint&)),
  72                 this, SLOT(showListContextMenu(const QPoint&)));
  73
  74         stackedWidget = new QStackedWidget();
  75         dockWidget = new QDockWidget(tr("Functions"), this);
  76         dockWidget->setAllowedAreas(Qt::LeftDockWidgetArea |
  77                                     Qt::RightDockWidgetArea);
  78         dockWidget->setWidget(listWidget);
  79         addDockWidget(Qt::LeftDockWidgetArea, dockWidget);
  80         setCentralWidget(stackedWidget);
  81
  82         connect(listWidget, &QTreeWidget::currentItemChanged,
  83                 [=] (QTreeWidgetItem* current, QTreeWidgetItem*) {
  84                         switchMainPlane(current);
  85                 });
  86
  87         setWindowTitle(tr("FRIDA"));
  88
  89         QTreeWidgetItem * external = new QTreeWidgetItem(listWidget, QStringList("External Functions"));
  90         external->setChildIndicatorPolicy(QTreeWidgetItem::ShowIndicator);
  91         external->setBackground(0, QBrush(QColor(0xff, 0xdd, 0xdd)));
  92         mgr->connect_new_function_signal([&] (Function* fun) {addFunction(fun);});
  93         mgr->connect_new_dyn_symbol_signal([=] (const std::string& name) {
  94                         auto item = new QTreeWidgetItem(external, QStringList(name.c_str()));
  95                         item->setBackground(0, QBrush(QColor(0xff, 0xdd, 0xdd)));
  96                 });
  97         mgr->connect_rename_function_signal([&](RenameFunctionEvent* event) {
  98                         if (objects_list_by_address.find(event->address) == objects_list_by_address.end())
  99                                 return;
 100                         auto item = objects_list_by_address[event->address];
 101                         if (item) item->setText(0, event->new_name.c_str());
 102                 });
 103         setGlobalHotkeys();
 104 }
 105
 106 void Mainwindow::setGlobalHotkeys() {
 107         QShortcut *shortcut = new QShortcut(QKeySequence("f"), this);
 108         connect(shortcut, &QShortcut::activated, this, &Mainwindow::requestNewFunction);
 109
 110         shortcut = new QShortcut(QKeySequence("r"), listWidget);
 111         connect(shortcut, &QShortcut::activated, [=]() {
 112                         QTreeWidgetItem * item = listWidget->currentItem();
 113                         if (item) renameFunction(objects_list[item]->getFunction());
 114                 });
 115 }
 116
 117 void Mainwindow::quit()
 118 {
 119         QMessageBox messageBox;
 120         messageBox.setWindowTitle(tr("Frida"));
 121         messageBox.setText(tr("Do you really want to quit?"));
 122         messageBox.setStandardButtons(QMessageBox::Yes | QMessageBox::No);
 123         messageBox.setDefaultButton(QMessageBox::No);
 124         if (messageBox.exec() == QMessageBox::Yes)
 125                 qApp->quit();
 126 }
 127
 128 void Mainwindow::open() {
 129         QString fileName = QFileDialog::getOpenFileName(this, tr("Open File"), "",
 130                                                         tr("Binaries (*)"));
 131         manager->reset(fileName.toStdString());
 132 }
 133
 134 void Mainwindow::load() {
 135         QString fileName = QFileDialog::getOpenFileName(this, tr("Open File"), "",
 136                                                         tr("Frida Archives (*.frida)"));
 137         manager->load(fileName.toStdString());
 138 }
 139
 140 void Mainwindow::save() {
 141         QString filename = QFileDialog::getSaveFileName(this, tr("Save File"), "", tr("Frida Archives (*.frida)"));
 142         manager->save(filename.toStdString());
 143 }
 144
 145 void Mainwindow::switchMainPlaneToAddress(uint64_t address) {
 146         if (objects_list_by_address.find(address) != objects_list_by_address.end()) {
 147                 LOG4CXX_DEBUG(logger, "Switching to function " << std::hex << address);
 148                 QTreeWidgetItem * item = objects_list_by_address[address];
 149                 listWidget->setCurrentItem(item);
 150                 stackedWidget->setCurrentWidget(objects_list[item]);
 151         } else {
 152                 LOG4CXX_DEBUG(logger, "No function at " << std::hex << address
 153                               << " -- it's probably an imported Symbol");
 154         }
 155 }
 156
 157 void Mainwindow::switchMainPlane(QTreeWidgetItem* to) {
 158         if (objects_list.end() != objects_list.find(to))
 159                 stackedWidget->setCurrentWidget(objects_list[to]);
 160 }
 161
 162 void Mainwindow::showListContextMenu(const QPoint& point) {
 163         QAction * act;
 164         QTreeWidgetItem * item = listWidget->itemAt(point);
 165         QMenu menu(this);
 166
 167         act = menu.addAction("Add Function");
 168         connect(act, &QAction::triggered, this, &Mainwindow::requestNewFunction);
 169
 170         act = menu.addAction("Add Group");
 171         connect(act, &QAction::triggered, this, &Mainwindow::requestNewGroup);
 172
 173         if (item) {
 174                 if (objects_list.find(item) != objects_list.end()) {
 175                         act = menu.addAction("Rename Function");
 176                         connect(act, &QAction::triggered, [=]() {this->renameFunction(objects_list[item]->getFunction());});
 177                 } else {
 178                         act = menu.addAction("Rename Group");
 179                         connect(act, &QAction::triggered, [=]() {renameGroup(item);});
 180                 }
 181
 182
 183                 QMenu* submenu = menu.addMenu("Move to group");
 184
 185                 for (QTreeWidgetItem* groupitem : group_list) {
 186                         act = submenu->addAction(groupitem->text(0));
 187                         connect(act, &QAction::triggered,
 188                                 [=] () {
 189                                         listWidget->invisibleRootItem()->removeChild(item);
 190                                         groupitem->addChild(item);
 191                                 });
 192                 }
 193         }
 194
 195         menu.exec(listWidget->mapToGlobal(point));
 196 }
 197
 198 void Mainwindow::requestNewFunction() {
 199         NewFunctionDialog dialog;
 200         int result = dialog.exec();
 201         if (QDialog::Accepted == result) {
 202                 requestNewFunctionByAddress(dialog.result());
 203         } else {
 204                 LOG4CXX_DEBUG(logger, "requestNewFunction aborted");
 205         }
 206 }
 207
 208 void Mainwindow::requestNewGroup() {
 209         SimpleStringDialog dialog("New Group");
 210         int result = dialog.exec();
 211         if (QDialog::Accepted == result) {
 212                 QTreeWidgetItem * external = new QTreeWidgetItem(listWidget, QStringList(dialog.result()));
 213                 external->setChildIndicatorPolicy(QTreeWidgetItem::ShowIndicator);
 214                 group_list.push_back(external);
 215         } else {
 216                 LOG4CXX_DEBUG(logger, "requestNewGroup aborted");
 217         }
 218 }
 219
 220 void Mainwindow::requestNewFunctionByAddress(uint64_t address) {
 221         LOG4CXX_DEBUG(logger, "requesting Function at " << std::hex << address);
 222         manager->getDisassembler()->disassembleFunctionAt(address);
 223         switchMainPlaneToAddress(address);
 224 }
 225
 226 void Mainwindow::renameFunction(Function* function) {
 227         SimpleStringDialog dialog("New name");
 228         int result = dialog.exec();
 229         if (QDialog::Accepted == result) {
 230                 LOG4CXX_DEBUG(logger, "renaming Function " << function->getName()
 231                               << " to " << dialog.result().toStdString());
 232                 function->setName(dialog.result().toStdString());
 233         } else {
 234                 LOG4CXX_DEBUG(logger, "renameFunction aborted");
 235         }
 236 }
 237
 238 void Mainwindow::renameGroup(QTreeWidgetItem* item) {
 239         SimpleStringDialog dialog("New name");
 240         int result = dialog.exec();
 241         if (QDialog::Accepted == result) {
 242                 LOG4CXX_DEBUG(logger, "renaming group " << item->text(0).toStdString()
 243                               << " to " << dialog.result().toStdString());
 244                 item->setText(0, dialog.result());
 245         } else {
 246                 LOG4CXX_DEBUG(logger, "renameFunction aborted");
 247         }
 248 }
 249
 250 void Mainwindow::addFunction(Function* fun) {
 251         if (functions.find(fun->getStartAddress()) != functions.end())
 252                 return;
 253
 254         functions.insert(std::make_pair(fun->getStartAddress(), fun));
 255
 256         FunctionWidget * w = new FunctionWidget(fun);
 257
 258         // CFG
 259         CFGScene * scene = new CFGScene;
 260
 261         BasicBlock * block = manager->getBasicBlock(fun->getStartAddress());
 262
 263         uint64_t start_address(std::numeric_limits<uint64_t>::max());
 264         for (auto b : fun->blocks()) {
 265                 if (b.first < start_address)
 266                         start_address = b.first;
 267         }
 268
 269         std::map<uint64_t, BasicBlockWidget*> _blocks;
 270         local__add_basic_block(block, this,
 271                                manager, _blocks, scene, start_address, 100);
 272
 273         QGraphicsView * view = new QGraphicsView(scene);
 274         w->addTab(view, "CFG");
 275
 276         // Listing
 277         QTableWidget * t = new QTableWidget();
 278         t->setColumnCount(3);
 279         t->horizontalHeader()->setSectionResizeMode(QHeaderView::ResizeToContents);
 280
 281         w->addTab(t, "Listing");
 282
 283         QTreeWidgetItem * item = new QTreeWidgetItem(listWidget, QStringList(fun->getName().c_str()));
 284         stackedWidget->addWidget(w);
 285         objects_list.insert(std::make_pair(item, w));
 286         LOG4CXX_DEBUG(logger, "Adding function widget at " << std::hex
 287                       << fun->getStartAddress());
 288         objects_list_by_address.insert(std::make_pair(fun->getStartAddress(), item));
 289 }
 290
 291 namespace {
 292         BasicBlockWidget *
 293         local__add_basic_block(BasicBlock * block,
 294                                Mainwindow * mainwindow, InformationManager * manager,
 295                                std::map<uint64_t, BasicBlockWidget*>& known_blocks,
 296                                CFGScene * scene, uint64_t starty, uint64_t startx) {
 297
 298                 decltype(known_blocks.begin()) old;
 299                 if ((old = known_blocks.find(block->getStartAddress())) != known_blocks.end())
 300                         return old->second;
 301
 302                 std::stringstream s;
 303                 s << "BLOCK_" << std::hex << block->getStartAddress()
 304                   << "_" << block->getEndAddress();
 305                 BasicBlockWidget * widget = new BasicBlockWidget(s.str().c_str(),
 306                                                                  block, mainwindow);
 307
 308                 known_blocks.insert(std::make_pair(block->getStartAddress(), widget));
 309
 310                 scene->addItem(widget);
 311                 widget->setFlag(QGraphicsItem::ItemIsMovable, true);
 312                 widget->moveBy(100*startx, block->getStartAddress() - starty);
 313
 314                 manager->getDisassembler()
 315                         ->printEachInstruction(block->getStartAddress(),
 316                                                block->getEndAddress(),
 317                                                [&](uint8_t* bytes,
 318                                                    size_t byte_count,
 319                                                    const std::string& line,
 320                                                    const std::string& ref) {
 321                                                        widget->addItem(bytes, byte_count,
 322                                                                        line.c_str() + 1, // remove \t
 323                                                                        ref.c_str());
 324                                                });
 325
 326                 BasicBlockWidget *tmp, *nextl(NULL), *nextr(NULL);
 327                 BasicBlock * tmpblock;
 328                 if (block->getNextBlock(0) != 0) {
 329                         int xshift = 0;
 330                         if (block->getNextBlock(1) != 0)
 331                                 xshift = 1;
 332                         tmpblock = manager->getBasicBlock(block->getNextBlock(0));
 333                         tmp = local__add_basic_block(tmpblock, mainwindow, manager,
 334                                                      known_blocks,
 335                                                      scene, starty, startx+xshift);
 336                         nextl = tmp;
 337                         tmp->addPrevious(widget);
 338                 }
 339                 if (block->getNextBlock(1) != 0) {
 340                         tmpblock = manager->getBasicBlock(block->getNextBlock(1));
 341                         tmp = local__add_basic_block(tmpblock, mainwindow, manager,
 342                                                      known_blocks,
 343                                                      scene, starty, startx-1);
 344                         nextr = tmp;
 345                         tmp->addPrevious(widget);
 346                 }
 347                 widget->addNext(nextl, nextr);
 348                 return widget;
 349         }
 350 }