wireshark/ui/qt/main_window.cpp

/* main_window.cpp
 *
 * $Id$
 *
 * Wireshark - Network traffic analyzer
 * By Gerald Combs <gerald@wireshark.org>
 * Copyright 1998 Gerald Combs
 *
 * 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, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#include "main_window.h"
#include "ui_main_window.h"

#include "globals.h"

#ifdef _WIN32
#include <windows.h>
#include <io.h>
#endif

#include <epan/filesystem.h>
#include <epan/prefs.h>

//#include <wiretap/wtap.h>

#ifdef HAVE_LIBPCAP
#include "capture.h"
#include "capture-pcap-util.h"
#include "capture_ui_utils.h"
#endif

#include "ui/alert_box.h"
#include "ui/main_statusbar.h"
#include "ui/capture_globals.h"
#include "ui/help_url.h"

#include "wireshark_application.h"
#include "proto_tree.h"
#include "byte_view_tab.h"
#include "capture_file_dialog.h"
#include "display_filter_edit.h"
#include "import_text_dialog.h"

#include "qt_ui_utils.h"

#include <QTreeWidget>
#include <QTabWidget>
#include <QAction>
#include <QToolButton>
#include <QKeyEvent>
#include <QMetaObject>
#include <QMessageBox>

//menu_recent_file_write_all

// If we ever add support for multiple windows this will need to be replaced.
static MainWindow *gbl_cur_main_window = NULL;

void pipe_input_set_handler(gint source, gpointer user_data, int *child_process, pipe_input_cb_t input_cb)
{
    gbl_cur_main_window->setPipeInputHandler(source, user_data, child_process, input_cb);
}

//Copied from gtk/help_dlg.[ch] need to move to qt/help_dlg.[ch]
static void
topic_action(topic_action_e action)
{
    char *url;

    url = topic_action_url(action);

    if(url != NULL) {
        QDesktopServices::openUrl(QUrl(url));
        g_free(url);
    }
}

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    main_ui_(new Ui::MainWindow),
    df_combo_box_(new DisplayFilterCombo()),
    cap_file_(NULL),
    previous_focus_(NULL),
    capture_stopping_(false),
#ifdef _WIN32
    pipe_timer_(NULL)
#else
    pipe_notifier_(NULL)
#endif
{
    QMargins go_to_margins;

    gbl_cur_main_window = this;
    main_ui_->setupUi(this);
    setMenusForCaptureFile();
    setForCaptureInProgress(false);

    connect(wsApp, SIGNAL(updateRecentItemStatus(const QString &, qint64, bool)), this, SLOT(updateRecentFiles()));
    updateRecentFiles();

    const DisplayFilterEdit *df_edit = dynamic_cast<DisplayFilterEdit *>(df_combo_box_->lineEdit());
    connect(df_edit, SIGNAL(pushFilterSyntaxStatus(QString&)), main_ui_->statusBar, SLOT(pushFilterStatus(QString&)));
    connect(df_edit, SIGNAL(popFilterSyntaxStatus()), main_ui_->statusBar, SLOT(popFilterStatus()));
    connect(df_edit, SIGNAL(pushFilterSyntaxWarning(QString&)), main_ui_->statusBar, SLOT(pushTemporaryStatus(QString&)));

#ifdef _WIN32
    // Qt <= 4.7 doesn't seem to style Windows toolbars. If we wanted to be really fancy we could use Blur Behind:
    // http://labs.qt.nokia.com/2009/09/15/using-blur-behind-on-windows/
    setStyleSheet(
                "QToolBar {"
                "  background: qlineargradient(spread:pad, x1:0, y1:0, x2:0, y2:1, stop:0 rgba(255,255,255,127), stop:0.37 rgba(234,234,234,127), stop:1 rgba(155,155,155,91));"
                "}"
            );
#endif
    main_ui_->mainToolBar->addWidget(df_combo_box_);

    main_ui_->utilityToolBar->hide();

    main_ui_->goToFrame->hide();
    go_to_margins = main_ui_->goToHB->contentsMargins();
    go_to_margins.setTop(0);
    go_to_margins.setBottom(0);
    main_ui_->goToHB->setContentsMargins(go_to_margins);
    // XXX For some reason the cursor is drawn funny with an input mask set
    // https://bugreports.qt-project.org/browse/QTBUG-7174
    main_ui_->goToFrame->setStyleSheet(
                "QFrame {"
                "  background: palette(window);"
                "  padding-top: 0.1em;"
                "  padding-bottom: 0.1em;"
                "  border-bottom: 0.1em solid palette(shadow);"
                "}"
                "QLineEdit {"
                "  max-width: 5em;"
                "}"
                );
#if defined(Q_WS_MAC)
    main_ui_->goToLineEdit->setAttribute(Qt::WA_MacSmallSize, true);
    main_ui_->goToGo->setAttribute(Qt::WA_MacSmallSize, true);
    main_ui_->goToCancel->setAttribute(Qt::WA_MacSmallSize, true);
#endif

    packet_splitter_ = new QSplitter(main_ui_->mainStack);
    packet_splitter_->setObjectName(QString::fromUtf8("splitterV"));
    packet_splitter_->setOrientation(Qt::Vertical);

    packet_list_ = new PacketList(packet_splitter_);

    ProtoTree *proto_tree = new ProtoTree(packet_splitter_);
    proto_tree->setHeaderHidden(true);
    proto_tree->installEventFilter(this);

    ByteViewTab *byte_view_tab = new ByteViewTab(packet_splitter_);
    byte_view_tab->setTabPosition(QTabWidget::South);
    byte_view_tab->setDocumentMode(true);

    packet_list_->setProtoTree(proto_tree);
    packet_list_->setByteViewTab(byte_view_tab);
    packet_list_->installEventFilter(this);

    packet_splitter_->addWidget(packet_list_);
    packet_splitter_->addWidget(proto_tree);
    packet_splitter_->addWidget(byte_view_tab);

    main_ui_->mainStack->addWidget(packet_splitter_);

    main_welcome_ = main_ui_->welcomePage;

#ifdef HAVE_LIBPCAP
    connect(wsApp, SIGNAL(captureCapturePrepared(capture_options *)),
            this, SLOT(captureCapturePrepared(capture_options *)));
    connect(wsApp, SIGNAL(captureCaptureUpdateStarted(capture_options *)),
            this, SLOT(captureCaptureUpdateStarted(capture_options *)));
    connect(wsApp, SIGNAL(captureCaptureUpdateFinished(capture_options *)),
            this, SLOT(captureCaptureUpdateFinished(capture_options *)));
    connect(wsApp, SIGNAL(captureCaptureFixedStarted(capture_options *)),
            this, SLOT(captureCaptureFixedStarted(capture_options *)));
    connect(wsApp, SIGNAL(captureCaptureFixedFinished(capture_options *)),
            this, SLOT(captureCaptureFixedFinished(capture_options *)));
    connect(wsApp, SIGNAL(captureCaptureStopping(capture_options *)),
            this, SLOT(captureCaptureStopping(capture_options *)));
    connect(wsApp, SIGNAL(captureCaptureFailed(capture_options *)),
            this, SLOT(captureCaptureFailed(capture_options *)));
#endif

    connect(wsApp, SIGNAL(captureFileReadStarted(const capture_file*)),
            this, SLOT(captureFileReadStarted(const capture_file*)));
    connect(wsApp, SIGNAL(captureFileReadFinished(const capture_file*)),
            this, SLOT(captureFileReadFinished(const capture_file*)));
    connect(wsApp, SIGNAL(captureFileClosing(const capture_file*)),
            this, SLOT(captureFileClosing(const capture_file*)));
    connect(wsApp, SIGNAL(captureFileClosed(const capture_file*)),
            this, SLOT(captureFileClosed(const capture_file*)));

    connect(main_welcome_, SIGNAL(recentFileActivated(QString&)),
            this, SLOT(openRecentCaptureFile(QString&)));

    connect(main_ui_->actionGoNextPacket, SIGNAL(triggered()),
            packet_list_, SLOT(goNextPacket()));
    connect(main_ui_->actionGoPreviousPacket, SIGNAL(triggered()),
            packet_list_, SLOT(goPreviousPacket()));
    connect(main_ui_->actionGoFirstPacket, SIGNAL(triggered()),
            packet_list_, SLOT(goFirstPacket()));
    connect(main_ui_->actionGoLastPacket, SIGNAL(triggered()),
            packet_list_, SLOT(goLastPacket()));

    connect(main_ui_->actionViewExpandSubtrees, SIGNAL(triggered()),
            proto_tree, SLOT(expandSubtrees()));
    connect(main_ui_->actionViewExpandAll, SIGNAL(triggered()),
            proto_tree, SLOT(expandAll()));
    connect(main_ui_->actionViewCollapseAll, SIGNAL(triggered()),
            proto_tree, SLOT(collapseAll()));

    connect(proto_tree, SIGNAL(protoItemSelected(QString&)),
            main_ui_->statusBar, SLOT(pushFieldStatus(QString&)));

    connect(proto_tree, SIGNAL(protoItemSelected(bool)),
            main_ui_->actionViewExpandSubtrees, SLOT(setEnabled(bool)));

    main_ui_->mainStack->setCurrentWidget(main_welcome_);
}

MainWindow::~MainWindow()
{
    delete main_ui_;
}

#include <QDebug>
void MainWindow::setPipeInputHandler(gint source, gpointer user_data, int *child_process, pipe_input_cb_t input_cb)
{
    pipe_source_        = source;
    pipe_child_process_ = child_process;
    pipe_user_data_     = user_data;
    pipe_input_cb_      = input_cb;

#ifdef _WIN32
    /* Tricky to use pipes in win9x, as no concept of wait.  NT can
       do this but that doesn't cover all win32 platforms.  GTK can do
       this but doesn't seem to work over processes.  Attempt to do
       something similar here, start a timer and check for data on every
       timeout. */
       /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_input_set_handler: new");*/

    if (pipe_timer_) {
        disconnect(pipe_timer_, SIGNAL(timeout()), this, SLOT(pipeTimeout()));
        delete pipe_timer_;
    }

    pipe_timer_ = new QTimer(this);
    connect(pipe_timer_, SIGNAL(timeout()), this, SLOT(pipeTimeout()));
    connect(pipe_timer_, SIGNAL(destroyed()), this, SLOT(pipeNotifierDestroyed()));
    pipe_timer_->start(200);
#else
    if (pipe_notifier_) {
        disconnect(pipe_notifier_, SIGNAL(activated(int)), this, SLOT(pipeActivated(int)));
        delete pipe_notifier_;
    }

    pipe_notifier_ = new QSocketNotifier(pipe_source_, QSocketNotifier::Read);
    // XXX ui/gtk/gui_utils.c sets the encoding. Do we need to do the same?
    connect(pipe_notifier_, SIGNAL(activated(int)), this, SLOT(pipeActivated(int)));
    connect(pipe_notifier_, SIGNAL(destroyed()), this, SLOT(pipeNotifierDestroyed()));
#endif
}


bool MainWindow::eventFilter(QObject *obj, QEvent *event) {

    // The user typed some text. Start filling in a filter.
    // We may need to be more choosy here. We just need to catch events for the packet list,
    // proto tree, and main welcome widgets.
    if (event->type() == QEvent::KeyPress) {
        QKeyEvent *kevt = static_cast<QKeyEvent *>(event);
        if (kevt->text().length() > 0 && kevt->text()[0].isPrint()) {
            df_combo_box_->lineEdit()->insert(kevt->text());
            df_combo_box_->lineEdit()->setFocus();
            return true;
        }
    }

    return QObject::eventFilter(obj, event);
}

void MainWindow::keyPressEvent(QKeyEvent *event) {

    // Explicitly focus on the display filter combo.
    if (event->modifiers() & Qt::ControlModifier && event->key() == Qt::Key_Slash) {
        df_combo_box_->setFocus(Qt::ShortcutFocusReason);
        return;
    }

    if (wsApp->focusWidget() == main_ui_->goToLineEdit) {
        if (event->modifiers() == Qt::NoModifier) {
            if (event->key() == Qt::Key_Escape) {
                on_goToCancel_clicked();
            } else if (event->key() == Qt::Key_Enter || event->key() == Qt::Key_Return) {
                on_goToGo_clicked();
            }
        }
        return; // goToLineEdit didn't want it and we don't either.
    }

    // Move up & down the packet list.
    if (event->key() == Qt::Key_F7) {
        packet_list_->goPreviousPacket();
    } else if (event->key() == Qt::Key_F8) {
        packet_list_->goNextPacket();
    }

    // Move along, citizen.
    QMainWindow::keyPressEvent(event);
}

void MainWindow::closeEvent(QCloseEvent *event) {
   /* If we're in the middle of stopping a capture, don't do anything;
      the user can try deleting the window after the capture stops. */
    if (capture_stopping_) {
        event->ignore();
    }
}

void MainWindow::openCaptureFile(QString &cf_path)
{
    QString file_name = "";
    QString display_filter = "";
    dfilter_t *rfcode = NULL;
    int err;

    cap_file_ = NULL;

    testCaptureFileClose(&cfile, false);

    for (;;) {

        if (cf_path.isEmpty()) {
            CaptureFileDialog open_dlg(this, display_filter);

            switch (prefs.gui_fileopen_style) {

            case FO_STYLE_LAST_OPENED:
                /* The user has specified that we should start out in the last directory
                   we looked in.  If we've already opened a file, use its containing
                   directory, if we could determine it, as the directory, otherwise
                   use the "last opened" directory saved in the preferences file if
                   there was one. */
                /* This is now the default behaviour in file_selection_new() */
                break;

            case FO_STYLE_SPECIFIED:
                /* The user has specified that we should always start out in a
                   specified directory; if they've specified that directory,
                   start out by showing the files in that dir. */
                if (prefs.gui_fileopen_dir[0] != '\0')
                    open_dlg.setDirectory(prefs.gui_fileopen_dir);
                break;
            }

            if (open_dlg.open(file_name)) {
                if (dfilter_compile(display_filter.toUtf8().constData(), &rfcode)) {
                    cf_set_rfcode(&cfile, rfcode);
                } else {
                    /* Not valid.  Tell the user, and go back and run the file
                       selection box again once they dismiss the alert. */
                    //bad_dfilter_alert_box(top_level, display_filter->str);
                    QMessageBox::warning(this, tr("Invalid Display Filter"),
                                         QString("The filter expression ") +
                                         display_filter +
                                         QString(" isn't a valid display filter. (") +
                                         dfilter_error_msg + QString(")."),
                                         QMessageBox::Ok);
                    continue;
                }
                cf_path = file_name;
            } else {
                return;
            }
        }

        /* Try to open the capture file. */
        if (cf_open(&cfile, cf_path.toUtf8().constData(), FALSE, &err) != CF_OK) {
            /* We couldn't open it; don't dismiss the open dialog box,
               just leave it around so that the user can, after they
               dismiss the alert box popped up for the open error,
               try again. */
            if (rfcode != NULL)
                dfilter_free(rfcode);
            cf_path.clear();
            continue;
        }

        cfile.window = this;

        switch (cf_read(&cfile, FALSE)) {

        case CF_READ_OK:
        case CF_READ_ERROR:
            /* Just because we got an error, that doesn't mean we were unable
               to read any of the file; we handle what we could get from the
               file. */
            break;

        case CF_READ_ABORTED:
            /* The user bailed out of re-reading the capture file; the
               capture file has been closed - just free the capture file name
               string and return (without changing the last containing
               directory). */
            cap_file_ = NULL;
            return;
        }
        break;
    }
    // get_dirname overwrites its path. Hopefully this isn't a problem.
    wsApp->setLastOpenDir(get_dirname(cf_path.toUtf8().data()));
    df_combo_box_->setEditText(display_filter);

    main_ui_->statusBar->showExpert();
}

void MainWindow::mergeCaptureFile()
{
    QString file_name = "";
    QString display_filter = "";
    dfilter_t *rfcode = NULL;
    int err;

    if (!cap_file_)
        return;

    if (prefs.gui_ask_unsaved) {
        if (cap_file_->is_tempfile || cap_file_->unsaved_changes) {
            QMessageBox msg_dialog;
            gchar *display_basename;
            int response;

            msg_dialog.setIcon(QMessageBox::Question);
            /* This is a temporary capture file or has unsaved changes; ask the
               user whether to save the capture. */
            if (cap_file_->is_tempfile) {
                msg_dialog.setText("Save packets before merging?");
                msg_dialog.setInformativeText("A temporary capture file can't be merged.");
            } else {
                /*
                 * Format the message.
                 */
                display_basename = g_filename_display_basename(cap_file_->filename);
                msg_dialog.setText(QString("Save changes in \"%1\" before merging?").arg(display_basename));
                g_free(display_basename);
                msg_dialog.setInformativeText("Changes must be saved before the files can be merged.");
            }

            msg_dialog.setStandardButtons(QMessageBox::Save | QMessageBox::Cancel);
            msg_dialog.setDefaultButton(QMessageBox::Save);

            response = msg_dialog.exec();

            switch (response) {

            case QMessageBox::Save:
                /* Save the file but don't close it */
                saveCapture(cap_file_, FALSE);
                break;

            case QMessageBox::Cancel:
            default:
                /* Don't do the merge. */
                return;
            }
        }
    }

    for (;;) {
        CaptureFileDialog merge_dlg(this, display_filter);
        int file_type;
        cf_status_t  merge_status;
        char        *in_filenames[2];
        char        *tmpname;

        switch (prefs.gui_fileopen_style) {

        case FO_STYLE_LAST_OPENED:
            /* The user has specified that we should start out in the last directory
           we looked in.  If we've already opened a file, use its containing
           directory, if we could determine it, as the directory, otherwise
           use the "last opened" directory saved in the preferences file if
           there was one. */
            /* This is now the default behaviour in file_selection_new() */
            break;

        case FO_STYLE_SPECIFIED:
            /* The user has specified that we should always start out in a
           specified directory; if they've specified that directory,
           start out by showing the files in that dir. */
            if (prefs.gui_fileopen_dir[0] != '\0')
                merge_dlg.setDirectory(prefs.gui_fileopen_dir);
            break;
        }

        if (merge_dlg.merge(file_name)) {
            if (dfilter_compile(display_filter.toUtf8().constData(), &rfcode)) {
                cf_set_rfcode(cap_file_, rfcode);
            } else {
                /* Not valid.  Tell the user, and go back and run the file
                   selection box again once they dismiss the alert. */
                //bad_dfilter_alert_box(top_level, display_filter->str);
                QMessageBox::warning(this, tr("Invalid Display Filter"),
                                     QString("The filter expression ") +
                                     display_filter +
                                     QString(" isn't a valid display filter. (") +
                                     dfilter_error_msg + QString(")."),
                                     QMessageBox::Ok);
                continue;
            }
        } else {
            return;
        }

        file_type = cap_file_->cd_t;

        /* Try to merge or append the two files */
        tmpname = NULL;
        if (merge_dlg.mergeType() == 0) {
            /* chronological order */
            in_filenames[0] = cap_file_->filename;
            in_filenames[1] = file_name.toUtf8().data();
            merge_status = cf_merge_files(&tmpname, 2, in_filenames, file_type, FALSE);
        } else if (merge_dlg.mergeType() <= 0) {
            /* prepend file */
            in_filenames[0] = file_name.toUtf8().data();
            in_filenames[1] = cap_file_->filename;
            merge_status = cf_merge_files(&tmpname, 2, in_filenames, file_type, TRUE);
        } else {
            /* append file */
            in_filenames[0] = cap_file_->filename;
            in_filenames[1] = file_name.toUtf8().data();
            merge_status = cf_merge_files(&tmpname, 2, in_filenames, file_type, TRUE);
        }

        if (merge_status != CF_OK) {
            if (rfcode != NULL)
                dfilter_free(rfcode);
            g_free(tmpname);
            continue;
        }

        cf_close(cap_file_);

        /* Try to open the merged capture file. */
        if (cf_open(&cfile, tmpname, TRUE /* temporary file */, &err) != CF_OK) {
            /* We couldn't open it; fail. */
            if (rfcode != NULL)
                dfilter_free(rfcode);
            g_free(tmpname);
            return;
        }

        /* Attach the new read filter to "cf" ("cf_open()" succeeded, so
           it closed the previous capture file, and thus destroyed any
           previous read filter attached to "cf"). */
        cfile.rfcode = rfcode;

        switch (cf_read(&cfile, FALSE)) {

        case CF_READ_OK:
        case CF_READ_ERROR:
            /* Just because we got an error, that doesn't mean we were unable
             to read any of the file; we handle what we could get from the
             file. */
            break;

        case CF_READ_ABORTED:
            /* The user bailed out of re-reading the capture file; the
             capture file has been closed - just free the capture file name
             string and return (without changing the last containing
             directory). */
            g_free(tmpname);
            return;
        }

        /* Save the name of the containing directory specified in the path name,
           if any; we can write over cf_merged_name, which is a good thing, given that
           "get_dirname()" does write over its argument. */
        wsApp->setLastOpenDir(get_dirname(tmpname));
        g_free(tmpname);
        df_combo_box_->setEditText(display_filter);
        main_ui_->statusBar->showExpert();
        return;
    }

}

void MainWindow::importCaptureFile() {
    ImportTextDialog import_dlg;

    if (!testCaptureFileClose(cap_file_, FALSE, *new QString(" before importing a new capture")))
        return;

    import_dlg.exec();

    if (import_dlg.result() != QDialog::Accepted) {
        main_ui_->mainStack->setCurrentWidget(main_welcome_);
        return;
    }

    openCaptureFile(import_dlg.capfileName());
}

void MainWindow::saveCapture(capture_file *cf, bool close_capture) {
    Q_UNUSED(cf);
    Q_UNUSED(close_capture);
    g_log(NULL, G_LOG_LEVEL_DEBUG, "FIX: saveCapture");
}

bool MainWindow::testCaptureFileClose(capture_file *cf, bool from_quit, QString &before_what) {
    bool   capture_in_progress = FALSE;

    if (!cf || cf->state == FILE_CLOSED)
        return true; /* Already closed, nothing to do */

#ifdef HAVE_LIBPCAP
    if (cf->state == FILE_READ_IN_PROGRESS) {
        /* This is true if we're reading a capture file *or* if we're doing
         a live capture.  If we're reading a capture file, the main loop
         is busy reading packets, and only accepting input from the
         progress dialog, so we can't get here, so this means we're
         doing a capture. */
        capture_in_progress = TRUE;
    }
#endif

    if (prefs.gui_ask_unsaved) {
        if (cf->is_tempfile || capture_in_progress || cf->unsaved_changes) {
            QMessageBox msg_dialog;
            QString question;
            QPushButton *default_button;
            int response;

            msg_dialog.setIcon(QMessageBox::Question);

            /* This is a temporary capture file, or there's a capture in
               progress, or the file has unsaved changes; ask the user whether
               to save the data. */
            if (cf->is_tempfile) {

                msg_dialog.setText("You have unsaved packets");
                msg_dialog.setInformativeText("They will be lost if you don't save them.");

                if (capture_in_progress) {
                    question.append("Do you want to stop the capture and save the captured packets");
                } else {
                    question.append("Do you want to save the captured packets");
                }
                question.append(before_what).append("?");
                msg_dialog.setInformativeText(question);


            } else {
                /*
                 * Format the message.
                 */
                if (capture_in_progress) {
                    question.append("Do you want to stop the capture and save the captured packets");
                    question.append(before_what).append("?");
                    msg_dialog.setInformativeText("Your captured packets will be lost if you don't save them.");
                } else {
                    gchar *display_basename = g_filename_display_basename(cf->filename);
                    question.append(QString("Do you want to save the changes you've made to the capture file \"%1\"%2?")
                                    .arg(display_basename)
                                    .arg(before_what)
                                    );
                    g_free(display_basename);
                    msg_dialog.setInformativeText("Your changes will be lost if you don't save them.");
                }
            }

            // XXX Text comes from ui/gtk/stock_icons.[ch]
            // Note that the button roles differ from the GTK+ version.
            // Cancel = RejectRole
            // Save = AcceptRole
            // Don't Save = DestructiveRole
            msg_dialog.setStandardButtons(QMessageBox::Cancel);

            if (capture_in_progress) {
                default_button = msg_dialog.addButton("Stop and Save", QMessageBox::AcceptRole);
            } else {
                default_button = msg_dialog.addButton(QMessageBox::Save);
            }
            msg_dialog.setDefaultButton(default_button);

            if (from_quit) {
                if (cf->state == FILE_READ_IN_PROGRESS) {
                    msg_dialog.addButton("Stop and Quit without Saving", QMessageBox::DestructiveRole);
                } else {
                    msg_dialog.addButton("Quit without Saving", QMessageBox::DestructiveRole);
                }
            } else {
                if (capture_in_progress) {
                    msg_dialog.addButton("Stop and Continue without Saving", QMessageBox::DestructiveRole);
                } else {
                    msg_dialog.addButton(QMessageBox::Discard);
                }
            }

            response = msg_dialog.exec();

            switch (response) {

            case QMessageBox::Save:
#ifdef HAVE_LIBPCAP
                /* If there's a capture in progress, we have to stop the capture
             and then do the save. */
                if (capture_in_progress)
                    captureStop(cf);
#endif
                /* Save the file and close it */
                saveCapture(cf, TRUE);
                break;

            case QMessageBox::Discard:
#ifdef HAVE_LIBPCAP
                /*
                 * If there's a capture in progress; we have to stop the capture
                 * and then do the close.
                 */
                if (capture_in_progress)
                    captureStop(cf);
#endif
                /* Just close the file, discarding changes */
                cf_close(cf);
                return true;
                break;

            case QMessageBox::Cancel:
            default:
                /* Don't close the file (and don't stop any capture in progress). */
                return false; /* file not closed */
                break;
            }
        } else {
            /* Unchanged file, just close it */
            cf_close(cf);
        }
    } else {
        /* User asked not to be bothered by those prompts, just close it.
         XXX - should that apply only to saving temporary files? */
#ifdef HAVE_LIBPCAP
        /* If there's a capture in progress, we have to stop the capture
           and then do the close. */
        if (capture_in_progress)
            captureStop(cf);
#endif
        cf_close(cf);
    }

    return true; /* File closed */
}

void MainWindow::captureStop(capture_file *cf) {
    stopCapture();

    while(cf->state == FILE_READ_IN_PROGRESS) {
        WiresharkApplication::processEvents();
    }
}

// Menu state

/* Enable or disable menu items based on whether you have a capture file
   you've finished reading and, if you have one, whether it's been saved
   and whether it could be saved except by copying the raw packet data. */
void MainWindow::setMenusForCaptureFile(bool force_disable)
{
    if (force_disable || cap_file_ == NULL || cap_file_->state == FILE_READ_IN_PROGRESS) {
        /* We have no capture file or we're currently reading a file */
        main_ui_->actionFileMerge->setEnabled(false);
        main_ui_->actionFileClose->setEnabled(false);
        main_ui_->actionFileSave->setEnabled(false);
        main_ui_->actionFileSaveAs->setEnabled(false);
        main_ui_->actionFileExportPackets->setEnabled(false);
        main_ui_->actionFileExportPacketDissections->setEnabled(false);
        main_ui_->actionFileExportPacketBytes->setEnabled(false);
        main_ui_->actionFileExportSSLSessionKeys->setEnabled(false);
        main_ui_->actionFileExportObjects->setEnabled(false);
        main_ui_->actionViewReload->setEnabled(false);
    } else {
        main_ui_->actionFileMerge->setEnabled(cf_can_write_with_wiretap(cap_file_));

        main_ui_->actionFileClose->setEnabled(true);
        /*
         * "Save" should be available only if:
         *
         *  the file has unsaved changes, and we can save it in some
         *  format through Wiretap
         *
         * or
         *
         *  the file is a temporary file and has no unsaved changes (so
         *  that "saving" it just means copying it).
         */
        main_ui_->actionFileSave->setEnabled(
                    (cap_file_->unsaved_changes && cf_can_write_with_wiretap(cap_file_)) ||
                    (cap_file_->is_tempfile && !cap_file_->unsaved_changes));
        /*
         * "Save As..." should be available only if:
         *
         *  we can save it in some format through Wiretap
         *
         * or
         *
         *  the file is a temporary file and has no unsaved changes (so
         *  that "saving" it just means copying it).
         */
        main_ui_->actionFileSaveAs->setEnabled(
                    cf_can_write_with_wiretap(cap_file_) ||
                    (cap_file_->is_tempfile && !cap_file_->unsaved_changes));
        /*
         * "Export Specified Packets..." should be available only if
         * we can write the file out in at least one format.
         */
//        set_menu_sensitivity(ui_manager_main_menubar, "/Menubar/FileMenu/ExportSpecifiedPackets",
//                             cf_can_write_with_wiretap(cf));
        main_ui_->actionFileExportPacketDissections->setEnabled(true);
        main_ui_->actionFileExportPacketBytes->setEnabled(true);
        main_ui_->actionFileExportSSLSessionKeys->setEnabled(true);
        main_ui_->actionFileExportObjects->setEnabled(true);
        main_ui_->actionViewReload->setEnabled(true);
    }
}

void MainWindow::setMenusForCaptureInProgress(bool capture_in_progress) {
    /* Either a capture was started or stopped; in either case, it's not
       in the process of stopping, so allow quitting. */

    main_ui_->actionFileOpen->setEnabled(!capture_in_progress);
    main_ui_->menuOpenRecentCaptureFile->setEnabled(!capture_in_progress);
    main_ui_->actionFileExportPacketDissections->setEnabled(capture_in_progress);
    main_ui_->actionFileExportPacketBytes->setEnabled(capture_in_progress);
    main_ui_->actionFileExportSSLSessionKeys->setEnabled(capture_in_progress);
    main_ui_->actionFileExportObjects->setEnabled(capture_in_progress);
    main_ui_->menuFile_Set->setEnabled(capture_in_progress);
    main_ui_->actionFileQuit->setEnabled(true);

    //    set_menu_sensitivity(ui_manager_packet_list_heading, "/PacketListHeadingPopup/SortAscending",
    //                         !capture_in_progress);
    //    set_menu_sensitivity(ui_manager_packet_list_heading, "/PacketListHeadingPopup/SortDescending",
    //                         !capture_in_progress);
    //    set_menu_sensitivity(ui_manager_packet_list_heading, "/PacketListHeadingPopup/NoSorting",
    //                         !capture_in_progress);

#ifdef HAVE_LIBPCAP
    main_ui_->actionCaptureOptions->setEnabled(!capture_in_progress);
    main_ui_->actionStartCapture->setEnabled(!capture_in_progress);
    main_ui_->actionStartCapture->setChecked(capture_in_progress);
    main_ui_->actionStopCapture->setEnabled(capture_in_progress);
    main_ui_->actionCaptureRestart->setEnabled(capture_in_progress);
#endif /* HAVE_LIBPCAP */

}

void MainWindow::setMenusForCaptureStopping() {
    main_ui_->actionFileQuit->setEnabled(false);
#ifdef HAVE_LIBPCAP
    main_ui_->actionStartCapture->setChecked(false);
    main_ui_->actionStopCapture->setEnabled(false);
    main_ui_->actionCaptureRestart->setEnabled(false);
#endif /* HAVE_LIBPCAP */
}

void MainWindow::updateForUnsavedChanges() {
//    set_display_filename(cf);
    setMenusForCaptureFile();
//    set_toolbar_for_capture_file(cf);

}

/* Update main window items based on whether there's a capture in progress. */
void MainWindow::setForCaptureInProgress(gboolean capture_in_progress)
{
    setMenusForCaptureInProgress(capture_in_progress);

//#ifdef HAVE_LIBPCAP
//    set_toolbar_for_capture_in_progress(capture_in_progress);

//    set_capture_if_dialog_for_capture_in_progress(capture_in_progress);
//#endif
}

// Capture callbacks

#ifdef HAVE_LIBPCAP
void MainWindow::captureCapturePrepared(capture_options *capture_opts) {
    qDebug() << "FIX captureCapturePrepared";
//    main_capture_set_main_window_title(capture_opts);

//    if(icon_list == NULL) {
//        icon_list = icon_list_create(wsiconcap16_xpm, wsiconcap32_xpm, wsiconcap48_xpm, NULL);
//    }
//    gtk_window_set_icon_list(GTK_WINDOW(top_level), icon_list);

    /* Disable menu items that make no sense if you're currently running
       a capture. */
    setForCaptureInProgress(true);
//    set_capture_if_dialog_for_capture_in_progress(TRUE);

//    /* Don't set up main window for a capture file. */
//    main_set_for_capture_file(FALSE);
    main_ui_->mainStack->setCurrentWidget(packet_splitter_);
    cap_file_ = (capture_file *) capture_opts->cf;
}
void MainWindow::captureCaptureUpdateStarted(capture_options *capture_opts) {
    Q_UNUSED(capture_opts);

    qDebug() << "captureCaptureUpdateStarted";
    setForCaptureInProgress(true);
}
void MainWindow::captureCaptureUpdateFinished(capture_options *capture_opts) {
    Q_UNUSED(capture_opts);

    /* The capture isn't stopping any more - it's stopped. */
    capture_stopping_ = false;

    /* Update the main window as appropriate */
    updateForUnsavedChanges();

    /* Enable menu items that make sense if you're not currently running
     a capture. */
    setForCaptureInProgress(false);

}
void MainWindow::captureCaptureFixedStarted(capture_options *capture_opts) {
    Q_UNUSED(capture_opts);
    qDebug() << "captureCaptureFixedStarted";
}
void MainWindow::captureCaptureFixedFinished(capture_options *capture_opts) {
    Q_UNUSED(capture_opts);
    qDebug() << "captureCaptureFixedFinished";

    /* The capture isn't stopping any more - it's stopped. */
    capture_stopping_ = false;

    /* Enable menu items that make sense if you're not currently running
     a capture. */
    setForCaptureInProgress(false);

}
void MainWindow::captureCaptureStopping(capture_options *capture_opts) {
    Q_UNUSED(capture_opts);

    capture_stopping_ = true;
    setMenusForCaptureStopping();
}
void MainWindow::captureCaptureFailed(capture_options *capture_opts) {
    Q_UNUSED(capture_opts);
    qDebug() << "captureCaptureFailed";
    /* Capture isn't stopping any more. */
    capture_stopping_ = false;

    setForCaptureInProgress(false);
}
#endif // HAVE_LIBPCAP


// Callbacks from cfile.c via WiresharkApplication::captureFileCallback

void MainWindow::captureFileReadStarted(const capture_file *cf) {
    cap_file_ = (capture_file *) cf;
//    tap_param_dlg_update();

    /* Set up main window for a capture file. */
//    main_set_for_capture_file(TRUE);

    main_ui_->statusBar->popFileStatus();
    QString msg = QString(tr("Loading: %1")).arg(get_basename(cf->filename));
    main_ui_->statusBar->pushFileStatus(msg);
    main_ui_->mainStack->setCurrentWidget(packet_splitter_);
    WiresharkApplication::processEvents();
}

void MainWindow::captureFileReadFinished(const capture_file *cf) {
    if (cf != cap_file_) return;

//    gchar *dir_path;

//    if (!cf->is_tempfile && cf->filename) {
//        /* Add this filename to the list of recent files in the "Recent Files" submenu */
//        add_menu_recent_capture_file(cf->filename);

//        /* Remember folder for next Open dialog and save it in recent */
//	dir_path = get_dirname(g_strdup(cf->filename));
//        wsApp->setLastOpenDir(dir_path);
//        g_free(dir_path);
//    }
//    set_display_filename(cf);

    /* Update the appropriate parts of the main window. */
    updateForUnsavedChanges();

//    /* Enable menu items that make sense if you have some captured packets. */
//    set_menus_for_captured_packets(TRUE);

    main_ui_->statusBar->popFileStatus();
    QString msg = QString().sprintf("%s", get_basename(cf->filename));
    main_ui_->statusBar->pushFileStatus(msg);
}

void MainWindow::captureFileClosing(const capture_file *cf) {
    if (cf != cap_file_) return;

    setMenusForCaptureFile(true);
    setForCaptureInProgress(false);

    // Reset expert info indicator
    main_ui_->statusBar->hideExpert();
//    gtk_widget_show(expert_info_none);
}

void MainWindow::captureFileClosed(const capture_file *cf) {
    if (cf != cap_file_) return;
    packets_bar_update();

    // Reset expert info indicator
    main_ui_->statusBar->hideExpert();

    main_ui_->statusBar->popFileStatus();
    cap_file_ = NULL;
}


// ui/gtk/capture_dlg.c:start_capture_confirmed

void MainWindow::startCapture() {
    interface_options interface_opts;
    guint i;

    /* did the user ever select a capture interface before? */
    if(global_capture_opts.num_selected == 0 &&
            ((prefs.capture_device == NULL) || (*prefs.capture_device != '\0'))) {
        QString msg = QString("No interface selected");
        main_ui_->statusBar->pushTemporaryStatus(msg);
        return;
    }

    /* XXX - we might need to init other pref data as well... */
//    main_auto_scroll_live_changed(auto_scroll_live);

    /* XXX - can this ever happen? */
    if (global_capture_opts.state != CAPTURE_STOPPED)
      return;

    /* close the currently loaded capture file */
    cf_close((capture_file *) global_capture_opts.cf);

    /* Copy the selected interfaces to the set of interfaces to use for
       this capture. */
    collect_ifaces(&global_capture_opts);

    if (capture_start(&global_capture_opts)) {
        /* The capture succeeded, which means the capture filter syntax is
         valid; add this capture filter to the recent capture filter list. */
        for (i = 0; i < global_capture_opts.ifaces->len; i++) {
            interface_opts = g_array_index(global_capture_opts.ifaces, interface_options, i);
            if (interface_opts.cfilter) {
//              cfilter_combo_add_recent(interface_opts.cfilter);
            }
        }
    }
}

// Copied from ui/gtk/gui_utils.c
void MainWindow::pipeTimeout() {
#ifdef _WIN32
    HANDLE handle;
    DWORD avail = 0;
    gboolean result, result1;
    DWORD childstatus;
    gint iterations = 0;


    /* try to read data from the pipe only 5 times, to avoid blocking */
    while(iterations < 5) {
        /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: new iteration");*/

        /* Oddly enough although Named pipes don't work on win9x,
           PeekNamedPipe does !!! */
        handle = (HANDLE) _get_osfhandle (pipe_source_);
        result = PeekNamedPipe(handle, NULL, 0, NULL, &avail, NULL);

        /* Get the child process exit status */
        result1 = GetExitCodeProcess((HANDLE)*(pipe_child_process_),
                                     &childstatus);

        /* If the Peek returned an error, or there are bytes to be read
           or the childwatcher thread has terminated then call the normal
           callback */
        if (!result || avail > 0 || childstatus != STILL_ACTIVE) {

            /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: data avail");*/

            /* And call the real handler */
            if (!pipe_input_cb_(pipe_source_, pipe_user_data_)) {
                g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: input pipe closed, iterations: %u", iterations);
                /* pipe closed, return false so that the old timer is not run again */
                delete pipe_timer_;
                return;
            }
        }
        else {
            /*g_log(NULL, G_LOG_LEVEL_DEBUG, "pipe_timer_cb: no data avail");*/
            /* No data, stop now */
            break;
        }

        iterations++;
    }
#endif // _WIN32
}

void MainWindow::pipeActivated(int source) {
#ifdef _WIN32
    Q_UNUSED(source);
#else
    g_assert(source == pipe_source_);

    pipe_notifier_->setEnabled(false);
    if (pipe_input_cb_(pipe_source_, pipe_user_data_)) {
        pipe_notifier_->setEnabled(true);
    } else {
        delete pipe_notifier_;
    }
#endif // _WIN32
}

void MainWindow::pipeNotifierDestroyed() {
#ifdef _WIN32
    pipe_timer_ = NULL;
#else
    pipe_notifier_ = NULL;
#endif // _WIN32
}

void MainWindow::stopCapture() {
//#ifdef HAVE_AIRPCAP
//  if (airpcap_if_active)
//    airpcap_set_toolbar_stop_capture(airpcap_if_active);
//#endif

    capture_stop(&global_capture_opts);
}

// XXX - Copied from ui/gtk/menus.c

/**
 * Add the capture filename (with an absolute path) to the "Recent Files" menu.
 *
 * @param cf_name Absolute path to the file.
 * @param first Prepend the filename if true, otherwise append it. Default is false (append).
 */
// XXX - We should probably create a RecentFile class.
void MainWindow::updateRecentFiles() {
    QAction *ra;
    QMenu *recentMenu = main_ui_->menuOpenRecentCaptureFile;
    QString action_cf_name;

    if (!recentMenu) {
        return;
    }

    recentMenu->clear();

    /* Iterate through the actions in menuOpenRecentCaptureFile,
     * removing special items, a maybe duplicate entry and every item above count_max */
    int shortcut = Qt::Key_0;
    foreach (recent_item_status *ri, wsApp->recent_item_list()) {
        // Add the new item
        ra = new QAction(recentMenu);
        ra->setData(ri->filename);
        // XXX - Needs get_recent_item_status or equivalent
        ra->setEnabled(ri->accessible);
        recentMenu->insertAction(NULL, ra);
        action_cf_name = ra->data().toString();
        if (shortcut <= Qt::Key_9) {
            ra->setShortcut(Qt::META | shortcut);
            shortcut++;
        }
        ra->setText(action_cf_name);
        connect(ra, SIGNAL(triggered()), this, SLOT(recentActionTriggered()));
    }

    if (recentMenu->actions().count() > 0) {
        // Separator + "Clear"
        // XXX - Do we really need this?
        ra = new QAction(recentMenu);
        ra->setSeparator(true);
        recentMenu->insertAction(NULL, ra);

        ra = new QAction(recentMenu);
        ra->setText(tr("Clear Menu"));
        recentMenu->insertAction(NULL, ra);
        connect(ra, SIGNAL(triggered()), wsApp, SLOT(clearRecentItems()));
    } else {
        if (main_ui_->actionDummyNoFilesFound) {
            recentMenu->addAction(main_ui_->actionDummyNoFilesFound);
        }
    }
}

void MainWindow::recentActionTriggered() {
    QAction *ra = qobject_cast<QAction*>(sender());

    if (ra) {
        QString cfPath = ra->data().toString();
        openCaptureFile(cfPath);
    }
}

void MainWindow::openRecentCaptureFile(QString &cfPath)
{
    openCaptureFile(cfPath);
}


// File Menu

void MainWindow::on_actionFileOpen_triggered()
{
    openCaptureFile();
}

void MainWindow::on_actionFileMerge_triggered()
{
    mergeCaptureFile();
}

void MainWindow::on_actionFileImport_triggered()
{
    importCaptureFile();
}

void MainWindow::on_actionFileClose_triggered() {
    if (testCaptureFileClose(&cfile))
        main_ui_->mainStack->setCurrentWidget(main_welcome_);
}

// View Menu

// Expand / collapse slots in proto_tree

// Go Menu

// Next / previous / first / last slots in packet_list

// Help Menu
void MainWindow::on_actionHelpContents_triggered() {

    topic_action(HELP_CONTENT);
}

void MainWindow::on_actionHelpMPWireshark_triggered() {

    topic_action(LOCALPAGE_MAN_WIRESHARK);
}
void MainWindow::on_actionHelpMPWireshark_Filter_triggered() {

    topic_action(LOCALPAGE_MAN_WIRESHARK_FILTER);
}
void MainWindow::on_actionHelpMPTShark_triggered() {

    topic_action(LOCALPAGE_MAN_TSHARK);
}
void MainWindow::on_actionHelpMPRawShark_triggered() {

    topic_action(LOCALPAGE_MAN_RAWSHARK);
}
void MainWindow::on_actionHelpMPDumpcap_triggered() {

    topic_action(LOCALPAGE_MAN_DUMPCAP);
}
void MainWindow::on_actionHelpMPMergecap_triggered() {

    topic_action(LOCALPAGE_MAN_MERGECAP);
}
void MainWindow::on_actionHelpMPEditcap_triggered() {

    topic_action(LOCALPAGE_MAN_EDITCAP);
}
void MainWindow::on_actionHelpMPText2cap_triggered() {

    topic_action(LOCALPAGE_MAN_TEXT2PCAP);
}

void MainWindow::on_actionHelpWebsite_triggered() {

    topic_action(ONLINEPAGE_HOME);
}

void MainWindow::on_actionHelpFAQ_triggered() {

    topic_action(ONLINEPAGE_FAQ);
}

void MainWindow::on_actionHelpAsk_triggered() {

    topic_action(ONLINEPAGE_ASK);
}

void MainWindow::on_actionHelpDownloads_triggered() {

    topic_action(ONLINEPAGE_DOWNLOAD);
}

void MainWindow::on_actionHelpWiki_triggered() {

    topic_action(ONLINEPAGE_WIKI);
}

void MainWindow::on_actionHelpSampleCaptures_triggered() {

    topic_action(ONLINEPAGE_SAMPLE_FILES);
}

void MainWindow::on_actionGoGoToPacket_triggered() {
    if (packet_list_->model()->rowCount() < 1) {
        return;
    }
    previous_focus_ = wsApp->focusWidget();
    connect(previous_focus_, SIGNAL(destroyed()), this, SLOT(resetPreviousFocus()));
    main_ui_->goToFrame->show();
    main_ui_->goToLineEdit->setFocus();
}

void MainWindow::resetPreviousFocus() {
    previous_focus_ = NULL;
}

void MainWindow::on_goToCancel_clicked()
{
    main_ui_->goToFrame->hide();
    if (previous_focus_) {
        disconnect(previous_focus_, SIGNAL(destroyed()), this, SLOT(resetPreviousFocus()));
        previous_focus_->setFocus();
        resetPreviousFocus();
    }
}

void MainWindow::on_goToGo_clicked()
{
    int packet_num = main_ui_->goToLineEdit->text().toInt();

    if (packet_num > 0) {
        packet_list_->goToPacket(packet_num);
    }
    on_goToCancel_clicked();
}

void MainWindow::on_goToLineEdit_returnPressed()
{
    on_goToGo_clicked();
}

void MainWindow::on_actionStartCapture_triggered()
{
//#ifdef HAVE_AIRPCAP
//  airpcap_if_active = airpcap_if_selected;
//  if (airpcap_if_active)
//    airpcap_set_toolbar_start_capture(airpcap_if_active);
//#endif

//  if (cap_open_w) {
//    /*
//     * There's an options dialog; get the values from it and close it.
//     */
//    gboolean success;

//    /* Determine if "capture start" while building of the "capture options" window */
//    /*  is in progress. If so, ignore the "capture start.                          */
//    /* XXX: Would it be better/cleaner for the "capture options" window code to    */
//    /*      disable the capture start button temporarily ?                         */
//    if (cap_open_complete == FALSE) {
//      return;  /* Building options window: ignore "capture start" */
//    }
//    success = capture_dlg_prep(cap_open_w);
//    window_destroy(GTK_WIDGET(cap_open_w));
//    if (!success)
//      return;   /* error in options dialog */
//  }

    main_ui_->mainStack->setCurrentWidget(packet_splitter_);

    if (global_capture_opts.num_selected == 0) {
        QMessageBox::critical(
                    this,
                    tr("No Interface Selected"),
                    tr("You didn't specify an interface on which to capture packets."),
                    QMessageBox::Ok
                    );
        return;
    }

    /* XXX - will closing this remove a temporary file? */
    if (testCaptureFileClose(&cfile, FALSE, *new QString(" before starting a new capture")))
        startCapture();
}

void MainWindow::on_actionStopCapture_triggered()
{
    stopCapture();
}

/*
 * Editor modelines
 *
 * Local Variables:
 * c-basic-offset: 4
 * tab-width: 8
 * indent-tabs-mode: nil
 * End:
 *
 * ex: set shiftwidth=4 tabstop=8 expandtab:
 * :indentSize=4:tabSize=8:noTabs=true:
 */