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/*
Copyright (C) 2006 - 2019 Evan Teran
evan.teran@gmail.com
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "DialogResults.h"
#include "IAnalyzer.h"
#include "ISymbolManager.h"
#include "MemoryRegions.h"
#include "ResultsModel.h"
#include "edb.h"
#ifdef ENABLE_GRAPH
#include "GraphEdge.h"
#include "GraphNode.h"
#include "GraphWidget.h"
#endif
#include <QDialog>
#include <QHeaderView>
#include <QMenu>
#include <QMessageBox>
#include <QPushButton>
#include <QSortFilterProxyModel>
namespace FunctionFinderPlugin {
/**
* @brief DialogResults::DialogResults
* @param parent
* @param f
*/
DialogResults::DialogResults(QWidget *parent, Qt::WindowFlags f)
: QDialog(parent, f) {
ui.setupUi(this);
ui.tableView->horizontalHeader()->setSectionResizeMode(QHeaderView::ResizeToContents);
resultsModel_ = new ResultsModel(this);
filterModel_ = new QSortFilterProxyModel(this);
filterModel_->setFilterKeyColumn(5);
filterModel_->setSourceModel(resultsModel_);
connect(ui.textFilter, &QLineEdit::textChanged, filterModel_, &QSortFilterProxyModel::setFilterFixedString);
ui.tableView->setModel(filterModel_);
buttonGraph_ = new QPushButton(QIcon::fromTheme("distribute-graph"), tr("Graph Selected Function"));
#if defined(ENABLE_GRAPH)
connect(buttonGraph_, &QPushButton::clicked, this, [this]() {
// this code is not very pretty...
// but it works!
qDebug("[FunctionFinder] Constructing Graph...");
const QItemSelectionModel *const selModel = ui.tableView->selectionModel();
const QModelIndexList sel = selModel->selectedRows();
if (sel.size() == 1) {
const QModelIndex index = filterModel_->mapToSource(sel[0]);
if (auto item = static_cast<ResultsModel::Result *>(index.internalPointer())) {
const edb::address_t addr = item->startAddress;
if (IAnalyzer *const analyzer = edb::v1::analyzer()) {
const IAnalyzer::FunctionMap &functions = analyzer->functions();
auto it = functions.find(addr);
if (it != functions.end()) {
Function f = *it;
auto graph = new GraphWidget(nullptr);
graph->setAttribute(Qt::WA_DeleteOnClose);
QMap<edb::address_t, GraphNode *> nodes;
// first create all of the nodes
for (const auto &pair : f) {
const BasicBlock &bb = pair.second;
auto node = new GraphNode(graph, bb.toString(), Qt::lightGray);
nodes.insert(bb.firstAddress(), node);
}
// then connect them!
for (const auto &pair : f) {
const BasicBlock &bb = pair.second;
if (!bb.empty()) {
auto term = bb.back();
auto &inst = *term;
if (is_unconditional_jump(inst)) {
Q_ASSERT(inst.operandCount() >= 1);
const auto op = inst[0];
// TODO: we need some heuristic for detecting when this is
// a call/ret -> jmp optimization
if (is_immediate(op)) {
const edb::address_t ea = op->imm;
auto from = nodes.find(bb.firstAddress());
auto to = nodes.find(ea);
if (to != nodes.end() && from != nodes.end()) {
new GraphEdge(from.value(), to.value(), Qt::black);
}
}
} else if (is_conditional_jump(inst)) {
Q_ASSERT(inst.operandCount() == 1);
const auto op = inst[0];
if (is_immediate(op)) {
auto from = nodes.find(bb.firstAddress());
auto to_taken = nodes.find(op->imm);
if (to_taken != nodes.end() && from != nodes.end()) {
new GraphEdge(from.value(), to_taken.value(), Qt::green);
}
auto to_skipped = nodes.find(inst.rva() + inst.byteSize());
if (to_taken != nodes.end() && from != nodes.end()) {
new GraphEdge(from.value(), to_skipped.value(), Qt::red);
}
}
} else if (is_terminator(inst)) {
}
}
}
graph->layout();
graph->show();
}
}
}
}
});
#endif
ui.buttonBox->addButton(buttonGraph_, QDialogButtonBox::ActionRole);
#ifdef ENABLE_GRAPH
buttonGraph_->setEnabled(true);
#else
buttonGraph_->setEnabled(false);
#endif
}
/**
* @brief DialogResults::on_tableView_doubleClicked
* @param index
*/
void DialogResults::on_tableView_doubleClicked(const QModelIndex &index) {
if (index.isValid()) {
const QModelIndex realIndex = filterModel_->mapToSource(index);
if (auto item = static_cast<ResultsModel::Result *>(realIndex.internalPointer())) {
edb::v1::jump_to_address(item->startAddress);
}
}
}
/**
* @brief DialogResults::addResult
* @param function
*/
void DialogResults::addResult(const Function &function) {
ResultsModel::Result result;
// entry point
result.startAddress = function.entryAddress();
// upper bound of the function
result.endAddress = function.endAddress();
result.size = function.endAddress() - function.entryAddress() + 1;
// reference count
result.score = function.referenceCount();
// type
result.type = function.type();
QString symbol_name = edb::v1::symbol_manager().findAddressName(function.entryAddress());
if (!symbol_name.isEmpty()) {
result.symbol = symbol_name;
}
resultsModel_->addResult(result);
}
/**
* @brief DialogResults::resultCount
* @return
*/
int DialogResults::resultCount() const {
return resultsModel_->rowCount();
}
}
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