/**************************************************************************** ** ** Copyright (C) 2016 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the QtNetwork module of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:LGPL$ ** Commercial License Usage ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and The Qt Company. For licensing terms ** and conditions see https://www.qt.io/terms-conditions. For further ** information use the contact form at https://www.qt.io/contact-us. ** ** GNU Lesser General Public License Usage ** Alternatively, this file may be used under the terms of the GNU Lesser ** General Public License version 3 as published by the Free Software ** Foundation and appearing in the file LICENSE.LGPL3 included in the ** packaging of this file. Please review the following information to ** ensure the GNU Lesser General Public License version 3 requirements ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. ** ** GNU General Public License Usage ** Alternatively, this file may be used under the terms of the GNU ** General Public License version 2.0 or (at your option) the GNU General ** Public license version 3 or any later version approved by the KDE Free ** Qt Foundation. The licenses are as published by the Free Software ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 ** included in the packaging of this file. Please review the following ** information to ensure the GNU General Public License requirements will ** be met: https://www.gnu.org/licenses/gpl-2.0.html and ** https://www.gnu.org/licenses/gpl-3.0.html. ** ** $QT_END_LICENSE$ ** ****************************************************************************/ #include "qnetworkconfiguration.h" #include "qnetworkconfiguration_p.h" #include QT_BEGIN_NAMESPACE /*! \class QNetworkConfiguration \brief The QNetworkConfiguration class provides an abstraction of one or more access point configurations. \since 4.7 \inmodule QtNetwork \ingroup network \ingroup shared QNetworkConfiguration encapsulates a single access point or service network. In most cases a single access point configuration can be mapped to one network interface. However a single network interface may not always map to only one access point configuration. Multiple configurations for the same network device may enable multiple access points. An example device that could exhibit such a configuration might be a Smartphone which allows the user to manage multiple WLAN configurations while the device itself has only one WLAN network device. The QNetworkConfiguration also supports the concept of service networks. This concept allows the grouping of multiple access point configurations into one entity. Such a group is called service network and can be beneficial in cases whereby a network session to a particular destination network is required (e.g. a company network). When using a service network the user doesn't usually care which one of the connectivity options is chosen (e.g. corporate WLAN or VPN via GPRS) as long as he can reach the company's target server. Depending on the current position and time some of the access points that make up the service network may not even be available. Furthermore automated access point roaming can be enabled which enables the device to change the network interface configuration dynamically while maintaining the applications connection to the target network. It allows adaption to the changing environment and may enable optimization with regards to cost, speed or other network parameters. Special configurations of type UserChoice provide a placeholder configuration which is resolved to an actual network configuration by the platform when a \l {QNetworkSession}{session} is \l {QNetworkSession::open()}{opened}. Not all platforms support the concept of a user choice configuration. \section1 Configuration States The list of available configurations can be obtained via QNetworkConfigurationManager::allConfigurations(). A configuration can have multiple states. The \l Defined configuration state indicates that the configuration is stored on the device. However the configuration is not yet ready to be activated as e.g. a WLAN may not be available at the current time. The \l Discovered state implies that the configuration is \l Defined and the outside conditions are such that the configuration can be used immediately to open a new network session. An example of such an outside condition may be that the Ethernet cable is actually connected to the device or that the WLAN with the specified SSID is in range. The \l Active state implies that the configuration is \l Discovered. A configuration in this state is currently being used by an application. The underlying network interface has a valid IP configuration and can transfer IP packets between the device and the target network. The \l Undefined state indicates that the system has knowledge of possible target networks but cannot actually use that knowledge to connect to it. An example for such a state could be an encrypted WLAN that has been discovered but the user hasn't actually saved a configuration including the required password which would allow the device to connect to it. Depending on the type of configuration some states are transient in nature. A GPRS/UMTS connection may almost always be \l Discovered if the GSM/UMTS network is available. However if the GSM/UMTS network loses the connection the associated configuration may change its state from \l Discovered to \l Defined as well. A similar use case might be triggered by WLAN availability. QNetworkConfigurationManager::updateConfigurations() can be used to manually trigger updates of states. Note that some platforms do not require such updates as they implicitly change the state once it has been discovered. If the state of a configuration changes all related QNetworkConfiguration instances change their state automatically. \sa QNetworkSession, QNetworkConfigurationManager */ /*! \enum QNetworkConfiguration::Type This enum describes the type of configuration. \value InternetAccessPoint The configuration specifies the details for a single access point. Note that configurations of type InternetAccessPoint may be part of other QNetworkConfigurations of type ServiceNetwork. \value ServiceNetwork The configuration is based on a group of QNetworkConfigurations of type InternetAccessPoint. All group members can reach the same target network. This type of configuration is a mandatory requirement for roaming enabled network sessions. On some platforms this form of configuration may also be called Service Network Access Point (SNAP). \value UserChoice The configuration is a placeholder which will be resolved to an actual configuration by the platform when a session is opened. Depending on the platform the selection may generate a popup dialog asking the user for his preferred choice. \value Invalid The configuration is invalid. */ /*! \enum QNetworkConfiguration::StateFlag Specifies the configuration states. \value Undefined This state is used for transient configurations such as newly discovered WLANs for which the user has not actually created a configuration yet. \value Defined Defined configurations are known to the system but are not immediately usable (e.g. a configured WLAN is not within range or the Ethernet cable is currently not plugged into the machine). \value Discovered A discovered configuration can be immediately used to create a new QNetworkSession. An example of a discovered configuration could be a WLAN which is within in range. If the device moves out of range the discovered flag is dropped. A second example is a GPRS configuration which generally remains discovered for as long as the device has network coverage. A configuration that has this state is also in state QNetworkConfiguration::Defined. If the configuration is a service network this flag is set if at least one of the underlying access points configurations has the Discovered state. \value Active The configuration is currently used by an open network session (see \l QNetworkSession::isOpen()). However this does not mean that the current process is the entity that created the open session. It merely indicates that if a new QNetworkSession were to be constructed based on this configuration \l QNetworkSession::state() would return \l QNetworkSession::Connected. This state implies the QNetworkConfiguration::Discovered state. */ /*! \enum QNetworkConfiguration::Purpose Specifies the purpose of the configuration. \value UnknownPurpose The configuration doesn't specify any purpose. This is the default value. \value PublicPurpose The configuration can be used for general purpose internet access. \value PrivatePurpose The configuration is suitable to access a private network such as an office Intranet. \value ServiceSpecificPurpose The configuration can be used for operator specific services (e.g. receiving MMS messages or content streaming). */ /*! \enum QNetworkConfiguration::BearerType Specifies the type of bearer used by a configuration. \value BearerUnknown The type of bearer is unknown or unspecified. The bearerTypeName() function may return additional information. \value BearerEthernet The configuration is for an Ethernet interfaces. \value BearerWLAN The configuration is for a Wireless LAN interface. \value Bearer2G The configuration is for a CSD, GPRS, HSCSD, EDGE or cdmaOne interface. \value Bearer3G The configuration is for a 3G interface. \value Bearer4G The configuration is for a 4G interface. \value BearerCDMA2000 The configuration is for CDMA interface. \value BearerWCDMA The configuration is for W-CDMA/UMTS interface. \value BearerHSPA The configuration is for High Speed Packet Access (HSPA) interface. \value BearerBluetooth The configuration is for a Bluetooth interface. \value BearerWiMAX The configuration is for a WiMAX interface. \value BearerEVDO The configuration is for an EVDO (3G) interface. \value BearerLTE The configuration is for a LTE (4G) interface. */ /*! Constructs an invalid configuration object. \sa isValid() */ QNetworkConfiguration::QNetworkConfiguration() : d(0) { } /*! Creates a copy of the QNetworkConfiguration object contained in \a other. */ QNetworkConfiguration::QNetworkConfiguration(const QNetworkConfiguration &other) : d(other.d) { } /*! Frees the resources associated with the QNetworkConfiguration object. */ QNetworkConfiguration::~QNetworkConfiguration() { } /*! Copies the content of the QNetworkConfiguration object contained in \a other into this one. */ QNetworkConfiguration &QNetworkConfiguration::operator=(const QNetworkConfiguration &other) { d = other.d; return *this; } /*! \fn void QNetworkConfiguration::swap(QNetworkConfiguration &other) \since 5.0 Swaps this network configuration with \a other. This function is very fast and never fails. */ /*! Returns \c true, if this configuration is the same as the \a other configuration given; otherwise returns \c false. */ bool QNetworkConfiguration::operator==(const QNetworkConfiguration &other) const { return (d == other.d); } /*! \fn bool QNetworkConfiguration::operator!=(const QNetworkConfiguration &other) const Returns \c true if this configuration is not the same as the \a other configuration given; otherwise returns \c false. */ /*! Returns the user visible name of this configuration. The name may either be the name of the underlying access point or the name for service network that this configuration represents. */ QString QNetworkConfiguration::name() const { if (!d) return QString(); QMutexLocker locker(&d->mutex); return d->name; } /*! Returns the unique and platform specific identifier for this network configuration; otherwise an empty string. */ QString QNetworkConfiguration::identifier() const { if (!d) return QString(); QMutexLocker locker(&d->mutex); return d->id; } /*! Returns the type of the configuration. A configuration can represent a single access point configuration or a set of access point configurations. Such a set is called service network. A configuration that is based on a service network can potentially support roaming of network sessions. */ QNetworkConfiguration::Type QNetworkConfiguration::type() const { if (!d) return QNetworkConfiguration::Invalid; QMutexLocker locker(&d->mutex); return d->type; } /*! Returns \c true if this QNetworkConfiguration object is valid. A configuration may become invalid if the user deletes the configuration or the configuration was default-constructed. The addition and removal of configurations can be monitored via the QNetworkConfigurationManager. \sa QNetworkConfigurationManager */ bool QNetworkConfiguration::isValid() const { if (!d) return false; QMutexLocker locker(&d->mutex); return d->isValid; } /*! \since 5.9 Returns the connect timeout of this configuration. \sa setConnectTimeout */ int QNetworkConfiguration::connectTimeout() const { if (!d) return QNetworkConfigurationPrivate::DefaultTimeout; QMutexLocker locker(&d->mutex); return d->timeout; } /*! \since 5.9 Sets the connect timeout of this configuration to \a timeout. This allows control of the timeout used by \c QAbstractSocket to establish a connection. \note \a timeout is in millisecond. \warning This will have no effect if the bearer plugin doesn't have the CanStartAndStopInterfaces capability. Returns true if succeeded. \sa connectTimeout */ bool QNetworkConfiguration::setConnectTimeout(int timeout) { if (!d) return false; QMutexLocker locker(&d->mutex); d->timeout = timeout; return true; } /*! Returns the current state of the configuration. */ QNetworkConfiguration::StateFlags QNetworkConfiguration::state() const { if (!d) return QNetworkConfiguration::Undefined; QMutexLocker locker(&d->mutex); return d->state; } /*! Returns the purpose of this configuration. The purpose field may be used to programmatically determine the purpose of a configuration. Such information is usually part of the access point or service network meta data. */ QNetworkConfiguration::Purpose QNetworkConfiguration::purpose() const { if (!d) return QNetworkConfiguration::UnknownPurpose; QMutexLocker locker(&d->mutex); return d->purpose; } /*! Returns \c true if this configuration supports roaming; otherwise false. */ bool QNetworkConfiguration::isRoamingAvailable() const { if (!d) return false; QMutexLocker locker(&d->mutex); return d->roamingSupported; } /*! Returns all sub configurations of this network configuration in priority order. The first sub configuration in the list has the highest priority. Only network configurations of type \l ServiceNetwork can have children. Otherwise this function returns an empty list. */ QList QNetworkConfiguration::children() const { return {}; } /*! Returns the type of bearer used by this network configuration. If the bearer type is \l {QNetworkConfiguration::BearerUnknown}{unknown} the bearerTypeName() function can be used to retrieve a textural type name for the bearer. An invalid network configuration always returns the BearerUnknown value. \sa bearerTypeName(), bearerTypeFamily() */ QNetworkConfiguration::BearerType QNetworkConfiguration::bearerType() const { if (!isValid()) return BearerUnknown; QMutexLocker locker(&d->mutex); return d->bearerType; } /*! \since 5.2 Returns the bearer type family used by this network configuration. The following table lists how bearerType() values map to bearerTypeFamily() values: \table \header \li bearer type \li bearer type family \row \li BearerUnknown, Bearer2G, BearerEthernet, BearerWLAN, BearerBluetooth \li (same type) \row \li BearerCDMA2000, BearerEVDO, BearerWCDMA, BearerHSPA, Bearer3G \li Bearer3G \row \li BearerWiMAX, BearerLTE, Bearer4G \li Bearer4G \endtable An invalid network configuration always returns the BearerUnknown value. \sa bearerType(), bearerTypeName() */ QNetworkConfiguration::BearerType QNetworkConfiguration::bearerTypeFamily() const { QNetworkConfiguration::BearerType type = bearerType(); switch (type) { case QNetworkConfiguration::BearerUnknown: // fallthrough case QNetworkConfiguration::Bearer2G: // fallthrough case QNetworkConfiguration::BearerEthernet: // fallthrough case QNetworkConfiguration::BearerWLAN: // fallthrough case QNetworkConfiguration::BearerBluetooth: return type; case QNetworkConfiguration::BearerCDMA2000: // fallthrough case QNetworkConfiguration::BearerEVDO: // fallthrough case QNetworkConfiguration::BearerWCDMA: // fallthrough case QNetworkConfiguration::BearerHSPA: // fallthrough case QNetworkConfiguration::Bearer3G: return QNetworkConfiguration::Bearer3G; case QNetworkConfiguration::BearerWiMAX: // fallthrough case QNetworkConfiguration::BearerLTE: // fallthrough case QNetworkConfiguration::Bearer4G: return QNetworkConfiguration::Bearer4G; default: qWarning() << "unknown bearer type" << type; return QNetworkConfiguration::BearerUnknown; } } /*! Returns the type of bearer used by this network configuration as a string. The string is not translated and therefore cannot be shown to the user. The subsequent table shows the fixed mappings between BearerType and the bearer type name for known types. If the BearerType is unknown this function may return additional information if it is available; otherwise an empty string will be returned. \table \header \li BearerType \li Value \row \li BearerUnknown \li The session is based on an unknown or unspecified bearer type. The value of the string returned describes the bearer type. \row \li BearerEthernet \li Ethernet \row \li BearerWLAN \li WLAN \row \li Bearer2G \li 2G \row \li Bearer3G \li 3G \row \li Bearer4G \li 4G \row \li BearerCDMA2000 \li CDMA2000 \row \li BearerWCDMA \li WCDMA \row \li BearerHSPA \li HSPA \row \li BearerBluetooth \li Bluetooth \row \li BearerWiMAX \li WiMAX \row \li BearerEVDO \li EVDO \row \li BearerLTE \li LTE \endtable This function returns an empty string if this is an invalid configuration, a network configuration of type \l QNetworkConfiguration::ServiceNetwork or \l QNetworkConfiguration::UserChoice. \sa bearerType(), bearerTypeFamily() */ QString QNetworkConfiguration::bearerTypeName() const { if (!isValid()) return QString(); QMutexLocker locker(&d->mutex); if (d->type == QNetworkConfiguration::ServiceNetwork || d->type == QNetworkConfiguration::UserChoice) return QString(); switch (d->bearerType) { case BearerEthernet: return QStringLiteral("Ethernet"); case BearerWLAN: return QStringLiteral("WLAN"); case Bearer2G: return QStringLiteral("2G"); case Bearer3G: return QStringLiteral("3G"); case Bearer4G: return QStringLiteral("4G"); case BearerCDMA2000: return QStringLiteral("CDMA2000"); case BearerWCDMA: return QStringLiteral("WCDMA"); case BearerHSPA: return QStringLiteral("HSPA"); case BearerBluetooth: return QStringLiteral("Bluetooth"); case BearerWiMAX: return QStringLiteral("WiMAX"); case BearerEVDO: return QStringLiteral("EVDO"); case BearerLTE: return QStringLiteral("LTE"); case BearerUnknown: break; } return QStringLiteral("Unknown"); } QT_END_NAMESPACE