![Joerg Mayer](/assets/img/avatar_default.png)
Change-Id: I95743eb53a3f30206a496163dea3b79f92a54b4e Reviewed-on: https://code.wireshark.org/review/23579 Reviewed-by: Jörg Mayer <jmayer@loplof.de>
619 lines
20 KiB
C++
619 lines
20 KiB
C++
/* interface_tree_cache_model.cpp
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* Model caching interface changes before sending them to global storage
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <ui/qt/models/interface_tree_cache_model.h>
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#include "glib.h"
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#include "epan/prefs.h"
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#include <ui/qt/utils/qt_ui_utils.h>
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#include "ui/capture_globals.h"
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#include "wsutil/utf8_entities.h"
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#include "wiretap/wtap.h"
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#include "wireshark_application.h"
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#include <QIdentityProxyModel>
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InterfaceTreeCacheModel::InterfaceTreeCacheModel(QObject *parent) :
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QIdentityProxyModel(parent)
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{
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/* ATTENTION: This cache model is not intended to be used with anything
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* else then InterfaceTreeModel, and will break with anything else
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* leading to unintended results. */
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sourceModel = new InterfaceTreeModel(parent);
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QIdentityProxyModel::setSourceModel(sourceModel);
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storage = new QMap<int, QMap<InterfaceTreeColumns, QVariant> *>();
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checkableColumns << IFTREE_COL_HIDDEN << IFTREE_COL_PROMISCUOUSMODE;
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#ifdef HAVE_PCAP_CREATE
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checkableColumns << IFTREE_COL_MONITOR_MODE;
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#endif
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editableColumns << IFTREE_COL_INTERFACE_COMMENT << IFTREE_COL_SNAPLEN << IFTREE_COL_PIPE_PATH;
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#ifdef CAN_SET_CAPTURE_BUFFER_SIZE
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editableColumns << IFTREE_COL_BUFFERLEN;
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#endif
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}
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InterfaceTreeCacheModel::~InterfaceTreeCacheModel()
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{
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#ifdef HAVE_LIBPCAP
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/* This list should only exist, if the dialog is closed, without calling save first */
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newDevices.clear();
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#endif
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delete storage;
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delete sourceModel;
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}
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QVariant InterfaceTreeCacheModel::getColumnContent(int idx, int col, int role)
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{
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return InterfaceTreeCacheModel::data(index(idx, col), role);
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}
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#ifdef HAVE_LIBPCAP
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void InterfaceTreeCacheModel::reset(int row)
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{
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if ( row < 0 )
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{
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delete storage;
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storage = new QMap<int, QMap<InterfaceTreeColumns, QVariant> *>();
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}
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else
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{
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if ( storage->count() > row )
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storage->remove(storage->keys().at(row));
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}
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}
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void InterfaceTreeCacheModel::saveNewDevices()
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{
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QList<interface_t>::const_iterator it = newDevices.constBegin();
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/* idx is used for iterating only over the indices of the new devices. As all new
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* devices are stored with an index higher then sourceModel->rowCount(), we start
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* only with those storage indices.
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* it is just the iterator over the new devices. A new device must not necessarily
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* have storage, which will lead to that device not being stored in global_capture_opts */
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for (int idx = sourceModel->rowCount(); it != newDevices.constEnd(); ++it, idx++)
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{
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interface_t *device = const_cast<interface_t *>(&(*it));
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bool useDevice = false;
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QMap<InterfaceTreeColumns, QVariant> * dataField = storage->value(idx, 0);
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/* When devices are being added, they are added using generic values. So only devices
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* whose data have been changed should be used from here on out. */
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if ( dataField != 0 )
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{
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if ( device->if_info.type != IF_PIPE )
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{
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continue;
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}
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if ( device->if_info.type == IF_PIPE )
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{
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QVariant saveValue = dataField->value(IFTREE_COL_PIPE_PATH);
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if ( saveValue.isValid() )
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{
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g_free(device->if_info.name);
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device->if_info.name = qstring_strdup(saveValue.toString());
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g_free(device->name);
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device->name = qstring_strdup(saveValue.toString());
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g_free(device->display_name);
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device->display_name = qstring_strdup(saveValue.toString());
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useDevice = true;
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}
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}
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if ( useDevice )
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g_array_append_val(global_capture_opts.all_ifaces, *device);
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}
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/* All entries of this new devices have been considered */
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storage->remove(idx);
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delete dataField;
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}
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newDevices.clear();
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}
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void InterfaceTreeCacheModel::save()
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{
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if ( storage->count() == 0 )
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return;
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QMap<char**, QStringList> prefStorage;
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/* No devices are hidden until checking "Show" state */
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prefStorage[&prefs.capture_devices_hide] = QStringList();
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/* Storing new devices first including their changed values */
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saveNewDevices();
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for(unsigned int idx = 0; idx < global_capture_opts.all_ifaces->len; idx++)
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{
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interface_t *device = &g_array_index(global_capture_opts.all_ifaces, interface_t, idx);
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if (! device->name )
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continue;
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/* Try to load a saved value row for this index */
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QMap<InterfaceTreeColumns, QVariant> * dataField = storage->value(idx, 0);
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/* Handle the storing of values for this device here */
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if ( dataField )
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{
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QMap<InterfaceTreeColumns, QVariant>::const_iterator it = dataField->constBegin();
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while ( it != dataField->constEnd() )
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{
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InterfaceTreeColumns col = it.key();
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QVariant saveValue = it.value();
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/* Setting the field values for each individual saved value cannot be generic, as the
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* struct cannot be accessed in a generic way. Therefore below, each individually changed
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* value has to be handled separately. Comments are stored only in the preference file
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* and applied to the data name during loading. Therefore comments are not handled here */
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if ( col == IFTREE_COL_HIDDEN )
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{
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device->hidden = saveValue.toBool();
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}
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#ifdef HAVE_EXTCAP
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else if ( device->if_info.type == IF_EXTCAP )
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{
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/* extcap interfaces do not have the following columns.
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* ATTENTION: all generic columns must be added, BEFORE this
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* if-clause, or they will be ignored for extcap interfaces */
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}
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#endif
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else if ( col == IFTREE_COL_PROMISCUOUSMODE )
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{
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device->pmode = saveValue.toBool();
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}
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#ifdef HAVE_PCAP_CREATE
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else if ( col == IFTREE_COL_MONITOR_MODE )
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{
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device->monitor_mode_enabled = saveValue.toBool();
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}
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#endif
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else if ( col == IFTREE_COL_SNAPLEN )
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{
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int iVal = saveValue.toInt();
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if ( iVal != WTAP_MAX_PACKET_SIZE_STANDARD )
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{
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device->has_snaplen = true;
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device->snaplen = iVal;
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}
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else
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{
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device->has_snaplen = false;
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device->snaplen = WTAP_MAX_PACKET_SIZE_STANDARD;
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}
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}
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#ifdef CAN_SET_CAPTURE_BUFFER_SIZE
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else if ( col == IFTREE_COL_BUFFERLEN )
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{
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device->buffer = saveValue.toInt();
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}
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#endif
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++it;
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}
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}
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QVariant content = getColumnContent(idx, IFTREE_COL_HIDDEN, Qt::CheckStateRole);
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if ( content.isValid() && static_cast<Qt::CheckState>(content.toInt()) == Qt::Unchecked )
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prefStorage[&prefs.capture_devices_hide] << QString(device->name);
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content = getColumnContent(idx, IFTREE_COL_INTERFACE_COMMENT);
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if ( content.isValid() && content.toString().size() > 0 )
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prefStorage[&prefs.capture_devices_descr] << QString("%1(%2)").arg(device->name).arg(content.toString());
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bool allowExtendedColumns = true;
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#ifdef HAVE_EXTCAP
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if ( device->if_info.type == IF_EXTCAP )
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allowExtendedColumns = false;
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#endif
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if ( allowExtendedColumns )
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{
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content = getColumnContent(idx, IFTREE_COL_PROMISCUOUSMODE, Qt::CheckStateRole);
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if ( content.isValid() )
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{
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bool value = static_cast<Qt::CheckState>(content.toInt()) == Qt::Checked;
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prefStorage[&prefs.capture_devices_pmode] << QString("%1(%2)").arg(device->name).arg(value ? 1 : 0);
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}
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#ifdef HAVE_PCAP_CREATE
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content = getColumnContent(idx, IFTREE_COL_MONITOR_MODE, Qt::CheckStateRole);
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if ( content.isValid() && static_cast<Qt::CheckState>(content.toInt()) == Qt::Checked )
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prefStorage[&prefs.capture_devices_monitor_mode] << QString(device->name);
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#endif
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content = getColumnContent(idx, IFTREE_COL_SNAPLEN);
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if ( content.isValid() )
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{
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int value = content.toInt();
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prefStorage[&prefs.capture_devices_snaplen] <<
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QString("%1:%2(%3)").arg(device->name).
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arg(device->has_snaplen ? 1 : 0).
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arg(device->has_snaplen ? value : WTAP_MAX_PACKET_SIZE_STANDARD);
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}
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#ifdef CAN_SET_CAPTURE_BUFFER_SIZE
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content = getColumnContent(idx, IFTREE_COL_BUFFERLEN);
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if ( content.isValid() )
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{
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int value = content.toInt();
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if ( value != -1 )
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{
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prefStorage[&prefs.capture_devices_buffersize] <<
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QString("%1(%2)").arg(device->name).
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arg(value);
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}
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}
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#endif
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}
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}
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QMap<char**, QStringList>::const_iterator it = prefStorage.constBegin();
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while ( it != prefStorage.constEnd() )
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{
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char ** key = it.key();
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g_free(*key);
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*key = qstring_strdup(it.value().join(","));
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++it;
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}
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wsApp->emitAppSignal(WiresharkApplication::LocalInterfacesChanged);
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}
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#endif
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int InterfaceTreeCacheModel::rowCount(const QModelIndex & parent) const
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{
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int totalCount = sourceModel->rowCount(parent);
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#ifdef HAVE_LIBPCAP
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totalCount += newDevices.size();
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#endif
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return totalCount;
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}
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bool InterfaceTreeCacheModel::changeIsAllowed(InterfaceTreeColumns col) const
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{
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if ( editableColumns.contains(col) || checkableColumns.contains(col) )
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return true;
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return false;
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}
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#ifdef HAVE_LIBPCAP
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const interface_t * InterfaceTreeCacheModel::lookup(const QModelIndex &index) const
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{
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const interface_t * result = 0;
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if ( ! index.isValid() )
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return result;
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if ( ! global_capture_opts.all_ifaces && newDevices.size() == 0 )
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return result;
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int idx = index.row();
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if ( (unsigned int) idx >= global_capture_opts.all_ifaces->len )
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{
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idx = idx - global_capture_opts.all_ifaces->len;
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if ( idx < newDevices.size() )
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result = &newDevices[idx];
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}
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else
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{
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result = &g_array_index(global_capture_opts.all_ifaces, interface_t, idx);
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}
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return result;
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}
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#endif
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/* This checks if the column can be edited for the given index. This differs from
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* isAvailableField in such a way, that it is only used in flags and not any
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* other method.*/
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bool InterfaceTreeCacheModel::isAllowedToBeEdited(const QModelIndex &index) const
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{
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#ifndef HAVE_LIBPCAP
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Q_UNUSED(index);
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#else
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const interface_t * device = lookup(index);
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if ( device == 0 )
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return false;
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#ifdef HAVE_EXTCAP
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InterfaceTreeColumns col = (InterfaceTreeColumns) index.column();
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if ( device->if_info.type == IF_EXTCAP )
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{
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/* extcap interfaces do not have those settings */
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if ( col == IFTREE_COL_PROMISCUOUSMODE || col == IFTREE_COL_SNAPLEN )
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return false;
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#ifdef CAN_SET_CAPTURE_BUFFER_SIZE
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if ( col == IFTREE_COL_BUFFERLEN )
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return false;
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#endif
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}
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#endif
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#endif
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return true;
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}
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// Whether this field is available for modification and display.
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bool InterfaceTreeCacheModel::isAvailableField(const QModelIndex &index) const
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{
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#ifndef HAVE_LIBPCAP
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Q_UNUSED(index);
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#else
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const interface_t * device = lookup(index);
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if ( device == 0 )
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return false;
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InterfaceTreeColumns col = (InterfaceTreeColumns) index.column();
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if ( col == IFTREE_COL_HIDDEN )
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{
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// Do not allow default capture interface to be hidden.
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if ( ! g_strcmp0(prefs.capture_device, device->display_name) )
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return false;
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}
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#endif
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return true;
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}
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Qt::ItemFlags InterfaceTreeCacheModel::flags(const QModelIndex &index) const
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{
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if ( ! index.isValid() )
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return 0;
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Qt::ItemFlags flags = Qt::ItemIsEnabled | Qt::ItemIsSelectable;
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InterfaceTreeColumns col = (InterfaceTreeColumns) index.column();
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if ( changeIsAllowed(col) && isAvailableField(index) && isAllowedToBeEdited(index) )
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{
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if ( checkableColumns.contains(col) )
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{
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flags |= Qt::ItemIsUserCheckable;
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}
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else
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{
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flags |= Qt::ItemIsEditable;
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}
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}
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return flags;
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}
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bool InterfaceTreeCacheModel::setData(const QModelIndex &index, const QVariant &value, int role)
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{
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if ( ! index.isValid() )
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return false;
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if ( ! isAvailableField(index) )
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return false;
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int row = index.row();
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InterfaceTreeColumns col = (InterfaceTreeColumns)index.column();
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if ( role == Qt::CheckStateRole || role == Qt::EditRole )
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{
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if ( changeIsAllowed( col ) )
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{
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QVariant saveValue = value;
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QMap<InterfaceTreeColumns, QVariant> * dataField = 0;
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/* obtain the list of already stored changes for this row. If none exist
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* create a new storage row for this entry */
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if ( ( dataField = storage->value(row, 0) ) == 0 )
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{
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dataField = new QMap<InterfaceTreeColumns, QVariant>();
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storage->insert(row, dataField);
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}
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dataField->insert(col, saveValue);
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return true;
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}
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}
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return false;
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}
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QVariant InterfaceTreeCacheModel::data(const QModelIndex &index, int role) const
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{
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if ( ! index.isValid() )
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return QVariant();
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int row = index.row();
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InterfaceTreeColumns col = (InterfaceTreeColumns)index.column();
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if ( isAvailableField(index) && isAllowedToBeEdited(index) )
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{
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if ( ( ( role == Qt::DisplayRole || role == Qt::EditRole ) && editableColumns.contains(col) ) ||
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( role == Qt::CheckStateRole && checkableColumns.contains(col) ) )
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{
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QMap<InterfaceTreeColumns, QVariant> * dataField = 0;
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if ( ( dataField = storage->value(row, 0) ) != 0 )
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{
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if ( dataField->contains(col) )
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{
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return dataField->value(col, QVariant());
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}
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}
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}
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}
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else
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{
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if ( role == Qt::CheckStateRole )
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return QVariant();
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else if ( role == Qt::DisplayRole )
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return QString(UTF8_EM_DASH);
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}
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if ( row < sourceModel->rowCount() )
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{
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return sourceModel->data(index, role);
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}
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#ifdef HAVE_LIBPCAP
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else
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{
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/* Handle all fields, which will have to be displayed for new devices. Only pipes
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* are supported at the moment, so the information to be displayed is pretty limited.
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* After saving, the devices are stored in global_capture_opts and no longer
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* classify as new devices. */
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const interface_t * device = lookup(index);
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if ( device != 0 )
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{
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if ( role == Qt::DisplayRole || role == Qt::EditRole )
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{
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if ( col == IFTREE_COL_PIPE_PATH ||
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col == IFTREE_COL_NAME ||
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col == IFTREE_COL_INTERFACE_NAME )
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{
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QMap<InterfaceTreeColumns, QVariant> * dataField = 0;
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if ( ( dataField = storage->value(row, 0) ) != 0 &&
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dataField->contains(IFTREE_COL_PIPE_PATH) )
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{
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return dataField->value(IFTREE_COL_PIPE_PATH, QVariant());
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}
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else
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return QString(device->name);
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}
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else if ( col == IFTREE_COL_TYPE )
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{
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return QVariant::fromValue((int)device->if_info.type);
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}
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}
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else if ( role == Qt::CheckStateRole )
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{
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if ( col == IFTREE_COL_HIDDEN )
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{
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// Do not allow default capture interface to be hidden.
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if ( ! g_strcmp0(prefs.capture_device, device->display_name) )
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return QVariant();
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/* Hidden is a de-selection, therefore inverted logic here */
|
|
return device->hidden ? Qt::Unchecked : Qt::Checked;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
return QVariant();
|
|
}
|
|
|
|
#ifdef HAVE_LIBPCAP
|
|
QModelIndex InterfaceTreeCacheModel::index(int row, int column, const QModelIndex &parent) const
|
|
{
|
|
if ( row >= sourceModel->rowCount() && ( row - sourceModel->rowCount() ) < newDevices.count() )
|
|
{
|
|
return createIndex(row, column, (void *)0);
|
|
}
|
|
|
|
return sourceModel->index(row, column, parent);
|
|
}
|
|
|
|
void InterfaceTreeCacheModel::addDevice(const interface_t * newDevice)
|
|
{
|
|
emit beginInsertRows(QModelIndex(), rowCount(), rowCount());
|
|
newDevices << *newDevice;
|
|
emit endInsertRows();
|
|
}
|
|
|
|
void InterfaceTreeCacheModel::deleteDevice(const QModelIndex &index)
|
|
{
|
|
if ( ! index.isValid() )
|
|
return;
|
|
|
|
emit beginRemoveRows(QModelIndex(), index.row(), index.row());
|
|
|
|
int row = index.row();
|
|
|
|
/* device is in newDevices */
|
|
if ( row >= sourceModel->rowCount() )
|
|
{
|
|
int newDeviceIdx = row - sourceModel->rowCount();
|
|
|
|
newDevices.removeAt(newDeviceIdx);
|
|
if ( storage->contains(index.row()) )
|
|
storage->remove(index.row());
|
|
|
|
/* The storage array has to be resorted, if the index, that was removed
|
|
* had been in the middle of the array. Can't start at index.row(), as
|
|
* it may not be contained in storage
|
|
* We must iterate using a list, not an iterator, otherwise the change
|
|
* will fold on itself. */
|
|
QList<int> storageKeys = storage->keys();
|
|
for ( int i = 0; i < storageKeys.size(); ++i )
|
|
{
|
|
int key = storageKeys.at(i);
|
|
if ( key > index.row() )
|
|
{
|
|
storage->insert(key - 1, storage->value(key));
|
|
storage->remove(key);
|
|
}
|
|
}
|
|
|
|
emit endRemoveRows();
|
|
}
|
|
else
|
|
{
|
|
interface_t *device = &g_array_index(global_capture_opts.all_ifaces, interface_t, row);
|
|
capture_opts_free_interface_t(device);
|
|
global_capture_opts.all_ifaces = g_array_remove_index(global_capture_opts.all_ifaces, row);
|
|
emit endRemoveRows();
|
|
wsApp->emitAppSignal(WiresharkApplication::LocalInterfacesChanged);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* 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:
|
|
*/
|