/*
    SPDX-FileCopyrightText: 2008, 2011 Will Stephenson <wstephenson@kde.org>
    SPDX-FileCopyrightText: 2013 Daniel Nicoletti <dantti12@gmail.com>

    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
*/

#include "ipconfig.h"

#include "manager.h"
#include "manager_p.h"

#include <arpa/inet.h>

#include "dbus/ip4configinterface.h"
#include "dbus/ip6configinterface.h"

namespace NetworkManager
{
class NetworkManager::IpConfig::Private
{
public:
    Private(const QList<IpAddress> &theAddresses, const QList<QHostAddress> &theNameservers, const QStringList &theDomains, const QList<IpRoute> &theRoutes)
        : addresses(theAddresses)
        , nameservers(theNameservers)
        , domains(theDomains)
        , routes(theRoutes)
    {
    }
    Private()
    {
    }
    IpAddresses addresses;
    QString gateway;
    QStringList searches;
    QList<QHostAddress> nameservers;
    QStringList domains;
    IpRoutes routes;
    QStringList dnsOptions;
};

}

NetworkManager::IpConfig::IpConfig(const IpAddresses &addresses, const QList<QHostAddress> &nameservers, const QStringList &domains, const IpRoutes &routes)
    : d(new Private(addresses, nameservers, domains, routes))
{
}

NetworkManager::IpConfig::IpConfig()
    : d(new Private())
{
}

NetworkManager::IpConfig::IpConfig(const IpConfig &other)
    : d(new Private)
{
    *this = other;
}

void NetworkManager::IpConfig::setIPv4Path(const QString &path)
{
    OrgFreedesktopNetworkManagerIP4ConfigInterface iface(NetworkManagerPrivate::DBUS_SERVICE,
                                                         path,
#ifdef NMQT_STATIC
                                                         QDBusConnection::sessionBus());
#else
                                                         QDBusConnection::systemBus());
#endif
    // TODO - watch propertiesChanged signal

    QList<NetworkManager::IpAddress> addressObjects;
    QList<NetworkManager::IpRoute> routeObjects;
    if (NetworkManager::checkVersion(1, 0, 0)) {
        const NMVariantMapList addresses = iface.addressData();
        for (const QVariantMap &addressList : addresses) {
            if (addressList.contains(QLatin1String("address")) //
                && addressList.contains(QLatin1String("prefix"))) {
                NetworkManager::IpAddress address;
                address.setIp(QHostAddress(addressList.value(QLatin1String("address")).toString()));
                address.setPrefixLength(addressList.value(QLatin1String("prefix")).toUInt());
                if (addressList.contains(QLatin1String("gateway"))) {
                    address.setGateway(QHostAddress(addressList.value(QLatin1String("gateway")).toString()));
                }
                addressObjects << address;
            }
        }

        const NMVariantMapList routes = iface.routeData();
        for (const QVariantMap &routeList : routes) {
            if (routeList.contains(QLatin1String("address")) && routeList.contains(QLatin1String("prefix"))) {
                NetworkManager::IpRoute route;
                route.setIp(QHostAddress(routeList.value(QLatin1String("address")).toString()));
                route.setPrefixLength(routeList.value(QLatin1String("prefix")).toUInt());
                if (routeList.contains(QLatin1String("next-hop"))) {
                    route.setNextHop(QHostAddress(routeList.value(QLatin1String("next-hop")).toString()));
                }

                if (routeList.contains(QLatin1String("metric"))) {
                    route.setMetric(routeList.value(QLatin1String("metric")).toUInt());
                }
                routeObjects << route;
            }
        }
    } else {
        // convert ipaddresses into object
        const UIntListList addresses = iface.addresses();
        for (const UIntList &addressList : addresses) {
            if (addressList.count() == 3) {
                NetworkManager::IpAddress address;
                address.setIp(QHostAddress(ntohl(addressList[0])));
                address.setPrefixLength(addressList[1]);
                address.setGateway(QHostAddress(ntohl(addressList[2])));
                addressObjects << address;
            }
        }
        // convert routes into objects
        const UIntListList routes = iface.routes();
        for (const UIntList &routeList : routes) {
            if (routeList.count() == 4) {
                NetworkManager::IpRoute route;
                route.setIp(QHostAddress(ntohl(routeList[0])));
                route.setPrefixLength(routeList[1]);
                route.setNextHop(QHostAddress(ntohl(routeList[2])));
                route.setMetric(ntohl(routeList[3]));
                routeObjects << route;
            }
        }
    }
    // nameservers' IP addresses are always in network byte order
    QList<QHostAddress> nameservers;
    const QList<uint> ifaceNameservers = iface.nameservers();
    for (uint nameserver : ifaceNameservers) {
        nameservers << QHostAddress(ntohl(nameserver));
    }

    d->addresses = addressObjects;
    d->routes = routeObjects;
    d->nameservers = nameservers;
    d->gateway = iface.gateway();
    d->searches = iface.searches();
    d->domains = iface.domains();
    if (NetworkManager::checkVersion(1, 2, 0)) {
        d->dnsOptions = iface.dnsOptions();
    }
}

void NetworkManager::IpConfig::setIPv6Path(const QString &path)
{
    // ask the daemon for the details
    OrgFreedesktopNetworkManagerIP6ConfigInterface iface(NetworkManagerPrivate::DBUS_SERVICE,
                                                         path,
#ifdef NMQT_STATIC
                                                         QDBusConnection::sessionBus());
#else
                                                         QDBusConnection::systemBus());
#endif
    // TODO - watch propertiesChanged signal

    QList<NetworkManager::IpAddress> addressObjects;
    QList<NetworkManager::IpRoute> routeObjects;
    if (NetworkManager::checkVersion(1, 0, 0)) {
        const NMVariantMapList addresses = iface.addressData();
        for (const QVariantMap &addressList : addresses) {
            if (addressList.contains(QLatin1String("address")) //
                && addressList.contains(QLatin1String("prefix"))) {
                NetworkManager::IpAddress address;
                address.setIp(QHostAddress(addressList.value(QLatin1String("address")).toString()));
                address.setPrefixLength(addressList.value(QLatin1String("prefix")).toUInt());
                if (addressList.contains(QLatin1String("gateway"))) {
                    address.setGateway(QHostAddress(addressList.value(QLatin1String("gateway")).toString()));
                }
                addressObjects << address;
            }
        }

        const NMVariantMapList routes = iface.routeData();
        for (const QVariantMap &routeList : routes) {
            if (routeList.contains(QLatin1String("address")) && routeList.contains(QLatin1String("prefix"))) {
                NetworkManager::IpRoute route;
                route.setIp(QHostAddress(routeList.value(QLatin1String("address")).toString()));
                route.setPrefixLength(routeList.value(QLatin1String("prefix")).toUInt());
                if (routeList.contains(QLatin1String("next-hop"))) {
                    route.setNextHop(QHostAddress(routeList.value(QLatin1String("next-hop")).toString()));
                }

                if (routeList.contains(QLatin1String("metric"))) {
                    route.setMetric(routeList.value(QLatin1String("metric")).toUInt());
                }
                routeObjects << route;
            }
        }
    } else {
        const IpV6DBusAddressList addresses = iface.addresses();
        for (const IpV6DBusAddress &address : addresses) {
            Q_IPV6ADDR addr;
            Q_IPV6ADDR gateway;
            for (int i = 0; i < 16; i++) {
                addr[i] = address.address[i];
            }
            for (int i = 0; i < 16; i++) {
                gateway[i] = address.gateway[i];
            }
            NetworkManager::IpAddress addressEntry;
            addressEntry.setIp(QHostAddress(addr));
            addressEntry.setPrefixLength(address.prefix);
            addressEntry.setGateway(QHostAddress(gateway));
            addressObjects << addressEntry;
        }

        const IpV6DBusRouteList routes = iface.routes();
        for (const IpV6DBusRoute &route : routes) {
            Q_IPV6ADDR dest;
            Q_IPV6ADDR nexthop;
            for (int i = 0; i < 16; i++) {
                dest[i] = route.destination[i];
            }
            for (int i = 0; i < 16; i++) {
                nexthop[i] = route.nexthop[i];
            }
            NetworkManager::IpRoute routeEntry;
            routeEntry.setIp(QHostAddress(dest));
            routeEntry.setPrefixLength(route.prefix);
            routeEntry.setNextHop(QHostAddress(nexthop));
            routeEntry.setMetric(route.metric);
            routeObjects << routeEntry;
        }
    }

    QList<QHostAddress> nameservers;
    const QList<QByteArray> ifaceNservers = iface.nameservers();
    for (const QByteArray &nameserver : ifaceNservers) {
        Q_IPV6ADDR address;
        for (int i = 0; i < 16; i++) {
            address[i] = static_cast<quint8>(nameserver[i]);
        }
        nameservers << QHostAddress(address);
    }

    d->addresses = addressObjects;
    d->routes = routeObjects;
    d->nameservers = nameservers;
    d->gateway = iface.gateway();
    d->searches = iface.searches();
    d->domains = iface.domains();
    if (NetworkManager::checkVersion(1, 2, 0)) {
        d->dnsOptions = iface.dnsOptions();
    }
}

NetworkManager::IpConfig::~IpConfig()
{
    delete d;
}

NetworkManager::IpAddresses NetworkManager::IpConfig::addresses() const
{
    return d->addresses;
}

QString NetworkManager::IpConfig::gateway() const
{
    return d->gateway;
}

QList<QHostAddress> NetworkManager::IpConfig::nameservers() const
{
    return d->nameservers;
}

QStringList NetworkManager::IpConfig::domains() const
{
    return d->domains;
}

QList<NetworkManager::IpRoute> NetworkManager::IpConfig::routes() const
{
    return d->routes;
}

QStringList NetworkManager::IpConfig::searches() const
{
    return d->searches;
}

QStringList NetworkManager::IpConfig::dnsOptions() const
{
    return d->dnsOptions;
}

NetworkManager::IpConfig &NetworkManager::IpConfig::operator=(const IpConfig &other)
{
    if (this == &other) {
        return *this;
    }

    *d = *other.d;
    return *this;
}

bool NetworkManager::IpConfig::isValid() const
{
    return !d->addresses.isEmpty();
}