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wireshark/ui/qt/capture_filter_edit.cpp

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/* capture_filter_edit.cpp
*
* 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 "config.h"
#include <glib.h>
#include <epan/proto.h>
#include "capture_opts.h"
#include <ui/capture_globals.h>
#include <filter_files.h>
#include <wsutil/utf8_entities.h>
#include "capture_filter_edit.h"
#include "capture_filter_syntax_worker.h"
#include "stock_icon_tool_button.h"
#include "wireshark_application.h"
#include <QComboBox>
#include <QCompleter>
#include <QPainter>
#include <QStringListModel>
#include <QStyleOptionFrame>
#include "qt_ui_utils.h"
// To do:
// - This duplicates some DisplayFilterEdit code.
// - We need simplified (button- and dropdown-free) versions for use in dialogs and field-only checking.
#if defined(Q_OS_MAC) && 0
// http://developer.apple.com/library/mac/#documentation/Cocoa/Reference/ApplicationKit/Classes/NSImage_Class/Reference/Reference.html
// http://www.virtualbox.org/svn/vbox/trunk/src/VBox/Frontends/VirtualBox/src/platform/darwin/UICocoaSpecialControls.mm
class UIMiniCancelButton: public QAbstractButton
{
Q_OBJECT;
public:
UIMiniCancelButton(QWidget *pParent = 0);
void setText(const QString &strText) { m_pButton->setText(strText); }
void setToolTip(const QString &strTip) { m_pButton->setToolTip(strTip); }
void removeBorder() {}
protected:
void paintEvent(QPaintEvent * /* pEvent */) {}
void resizeEvent(QResizeEvent *pEvent);
private:
UICocoaButton *m_pButton;
};
UIMiniCancelButton::UIMiniCancelButton(QWidget *pParent /* = 0 */)
: QAbstractButton(pParent)
{
setShortcut(QKeySequence(Qt::Key_Escape));
m_pButton = new UICocoaButton(UICocoaButton::CancelButton, this);
connect(m_pButton, SIGNAL(clicked()),
this, SIGNAL(clicked()));
setFixedSize(m_pButton->size());
}
#endif
static const QString libpcap_primitive_chars_ = "-0123456789abcdefghijklmnopqrstuvwxyz";
// grep '^[a-z].*return [A-Z].*;$' scanner.l | awk '{gsub(/\|/, "\n") ; print " << \"" $1 "\""}' | sort
// Remove "and" and "or".
static const QStringList libpcap_primitives_ = QStringList()
<< "aarp" << "action" << "address1" << "address2" << "address3" << "address4"
<< "ah" << "arp" << "atalk" << "bcc" << "broadcast" << "byte" << "carp"
<< "clnp" << "connectmsg" << "csnp" << "decnet" << "direction" << "dpc"
<< "dst" << "es-is" << "esis" << "esp" << "fddi" << "fisu" << "gateway"
<< "greater" << "hdpc" << "hfisu" << "hlssu" << "hmsu" << "hopc" << "host"
<< "hsio" << "hsls" << "icmp" << "icmp6" << "igmp" << "igrp" << "iih" << "ilmic"
<< "inbound" << "ip" << "ip6" << "ipx" << "is-is" << "isis" << "iso" << "l1"
<< "l2" << "lane" << "lat" << "len" << "less" << "link" << "llc" << "lsp"
<< "lssu" << "lsu" << "mask" << "metac" << "metaconnect" << "mopdl" << "moprc"
<< "mpls" << "msu" << "multicast" << "net" << "netbeui" << "oam" << "oamf4"
<< "oamf4ec" << "oamf4sc" << "on" << "opc" << "outbound" << "pim"
<< "port" << "portrange" << "pppoed" << "pppoes" << "proto" << "psnp" << "ra"
<< "radio" << "rarp" << "reason" << "rnr" << "rset" << "sc" << "sca" << "sctp"
<< "sio" << "sls" << "snp" << "src" << "srnr" << "stp" << "subtype" << "ta"
<< "tcp" << "type" << "udp" << "vci" << "vlan" << "vpi" << "vrrp"
;
CaptureFilterEdit::CaptureFilterEdit(QWidget *parent, bool plain) :
SyntaxLineEdit(parent),
plain_(plain),
field_name_only_(false),
bookmark_button_(NULL),
clear_button_(NULL),
apply_button_(NULL)
{
setAccessibleName(tr("Capture filter entry"));
completion_model_ = new QStringListModel(this);
setCompleter(new QCompleter(completion_model_, this));
setCompletionTokenChars(libpcap_primitive_chars_);
placeholder_text_ = QString(tr("Enter a capture filter %1")).arg(UTF8_HORIZONTAL_ELLIPSIS);
#if QT_VERSION >= QT_VERSION_CHECK(4, 7, 0)
setPlaceholderText(placeholder_text_);
#endif
// These are fully implemented in DisplayFilterEdit but not here.
if (!plain_) {
bookmark_button_ = new StockIconToolButton(this, "x-filter-bookmark");
bookmark_button_->setCursor(Qt::ArrowCursor);
bookmark_button_->setPopupMode(QToolButton::InstantPopup);
bookmark_button_->setToolTip(tr("Manage saved bookmarks."));
bookmark_button_->setIconSize(QSize(14, 14));
bookmark_button_->setStyleSheet(
"QToolButton {"
" border: none;"
" background: transparent;" // Disables platform style on Windows.
" padding: 0 0 0 0;"
"}"
"QToolButton::menu-indicator { image: none; }"
);
connect(bookmark_button_, SIGNAL(clicked()), this, SLOT(bookmarkClicked()));
}
if (!plain_) {
clear_button_ = new StockIconToolButton(this, "x-filter-clear");
clear_button_->setCursor(Qt::ArrowCursor);
clear_button_->setToolTip(QString());
clear_button_->setIconSize(QSize(14, 14));
clear_button_->setStyleSheet(
"QToolButton {"
" border: none;"
" background: transparent;" // Disables platform style on Windows.
" padding: 0 0 0 0;"
" margin-left: 1px;"
"}"
);
connect(clear_button_, SIGNAL(clicked()), this, SLOT(clear()));
}
connect(this, SIGNAL(textChanged(const QString&)), this, SLOT(checkFilter(const QString&)));
if (!plain_) {
apply_button_ = new StockIconToolButton(this, "x-filter-apply");
apply_button_->setCursor(Qt::ArrowCursor);
apply_button_->setEnabled(false);
apply_button_->setToolTip(tr("Apply this filter string to the display."));
apply_button_->setIconSize(QSize(24, 14));
apply_button_->setStyleSheet(
"QToolButton {"
" border: none;"
" background: transparent;" // Disables platform style on Windows.
" padding: 0 0 0 0;"
"}"
);
connect(apply_button_, SIGNAL(clicked()), this, SLOT(applyCaptureFilter()));
}
connect(this, SIGNAL(returnPressed()), this, SLOT(applyCaptureFilter()));
int frameWidth = style()->pixelMetric(QStyle::PM_DefaultFrameWidth);
QSize bksz;
if (bookmark_button_) bksz = bookmark_button_->sizeHint();
QSize cbsz;
if (clear_button_) cbsz = clear_button_->sizeHint();
QSize apsz;
if (apply_button_) apsz = apply_button_->sizeHint();
setStyleSheet(QString(
"CaptureFilterEdit {"
" padding-left: %1px;"
" margin-left: %2px;"
" margin-right: %3px;"
"}"
)
.arg(frameWidth + 1)
.arg(bksz.width())
.arg(cbsz.width() + apsz.width() + frameWidth + 1)
);
QThread *syntax_thread = new QThread;
syntax_worker_ = new CaptureFilterSyntaxWorker;
syntax_worker_->moveToThread(syntax_thread);
connect(wsApp, SIGNAL(appInitialized()), this, SLOT(initCaptureFilter()));
connect(syntax_thread, SIGNAL(started()), syntax_worker_, SLOT(start()));
connect(syntax_thread, SIGNAL(started()), this, SLOT(checkFilter()));
connect(syntax_worker_, SIGNAL(syntaxResult(QString,int,QString)),
this, SLOT(setFilterSyntaxState(QString,int,QString)));
connect(syntax_thread, SIGNAL(finished()), syntax_worker_, SLOT(deleteLater()));
syntax_thread->start();
checkFilter();
}
#if QT_VERSION < QT_VERSION_CHECK(4, 7, 0)
void CaptureFilterEdit::paintEvent(QPaintEvent *evt) {
SyntaxLineEdit::paintEvent(evt);
// http://wiki.forum.nokia.com/index.php/Custom_QLineEdit
if (text().isEmpty() && ! this->hasFocus()) {
QPainter p(this);
QFont f = font();
f.setItalic(true);
p.setFont(f);
QColor color(palette().color(foregroundRole()));
color.setAlphaF(0.5);
p.setPen(color);
QStyleOptionFrame opt;
initStyleOption(&opt);
QRect cr = style()->subElementRect(QStyle::SE_LineEditContents, &opt, this);
cr.setLeft(cr.left() + 2);
cr.setRight(cr.right() - 2);
p.drawText(cr, Qt::AlignLeft|Qt::AlignVCenter, placeholder_text_);
}
// else check filter syntax and set the background accordingly
// XXX - Should we add little warning/error icons as well?
}
#endif // QT < 4.7
void CaptureFilterEdit::resizeEvent(QResizeEvent *)
{
QSize cbsz;
if (clear_button_) cbsz = clear_button_->sizeHint();
QSize apsz;
if (apply_button_) apsz = apply_button_->sizeHint();
int frameWidth = style()->pixelMetric(QStyle::PM_DefaultFrameWidth);
if (clear_button_) {
clear_button_->move(contentsRect().right() - frameWidth - cbsz.width() - apsz.width(),
contentsRect().top());
clear_button_->setMinimumHeight(contentsRect().height());
clear_button_->setMaximumHeight(contentsRect().height());
}
if (apply_button_) {
apply_button_->move(contentsRect().right() - frameWidth - apsz.width(),
contentsRect().top());
apply_button_->setMinimumHeight(contentsRect().height());
apply_button_->setMaximumHeight(contentsRect().height());
}
if (bookmark_button_) {
bookmark_button_->setMinimumHeight(contentsRect().height());
bookmark_button_->setMaximumHeight(contentsRect().height());
}
}
void CaptureFilterEdit::checkFilter(const QString& filter)
{
setSyntaxState(Busy);
popFilterSyntaxStatus();
bool empty = filter.isEmpty();
if (bookmark_button_) {
bookmark_button_->setEnabled(false);
}
if (apply_button_) {
apply_button_->setEnabled(false);
}
if (clear_button_) {
clear_button_->setVisible(!empty);
}
if (empty) {
setFilterSyntaxState(filter, Empty, QString());
} else {
syntax_worker_->checkFilter(filter);
}
}
void CaptureFilterEdit::checkFilter()
{
checkFilter(text());
}
void CaptureFilterEdit::initCaptureFilter()
{
#ifdef HAVE_LIBPCAP
setText(global_capture_opts.default_options.cfilter);
#endif // HAVE_LIBPCAP
}
void CaptureFilterEdit::setFilterSyntaxState(QString filter, int state, QString err_msg)
{
if (filter.compare(text()) == 0) { // The user hasn't changed the filter
setSyntaxState((SyntaxState)state);
if (!err_msg.isEmpty()) {
emit pushFilterSyntaxStatus(err_msg);
}
}
bool valid = (state != Invalid);
if (valid) {
if (bookmark_button_) {
bookmark_button_->setEnabled(true);
}
if (apply_button_) {
apply_button_->setEnabled(true);
}
}
emit captureFilterSyntaxChanged(valid);
}
void CaptureFilterEdit::bookmarkClicked()
{
emit addBookmark(text());
}
void CaptureFilterEdit::buildCompletionList(const QString &primitive_word)
{
if (primitive_word.length() < 1) {
completion_model_->setStringList(QStringList());
return;
}
// Grab matching capture filters from our parent combo and from the
// saved capture filters file. Skip ones that look like single fields
// and assume they will be added below.
QStringList complex_list;
QComboBox *cf_combo = qobject_cast<QComboBox *>(parent());
if (cf_combo) {
for (int i = 0; i < cf_combo->count() ; i++) {
QString recent_filter = cf_combo->itemText(i);
if (isComplexFilter(recent_filter)) {
complex_list << recent_filter;
}
}
}
for (const GList *cf_item = get_filter_list_first(CFILTER_LIST); cf_item; cf_item = g_list_next(cf_item)) {
const filter_def *cf_def = (filter_def *) cf_item->data;
if (!cf_def || !cf_def->strval) continue;
QString saved_filter = cf_def->strval;
if (isComplexFilter(saved_filter) && !complex_list.contains(saved_filter)) {
complex_list << saved_filter;
}
}
// libpcap has a small number of primitives so we just add the whole list
// sans the current word.
QStringList primitive_list = libpcap_primitives_;
primitive_list.removeAll(primitive_word);
completion_model_->setStringList(complex_list + primitive_list);
completer()->setCompletionPrefix(primitive_word);
}
void CaptureFilterEdit::applyCaptureFilter()
{
if (syntaxState() == Invalid) {
return;
}
emit startCapture();
}
/*
* 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:
*/
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