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