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tdenetwork/krfb/srvloc/kinetinterface.cpp

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/*
* Represents an Inet interface
* Copyright (C) 2002 Tim Jansen <tim@tjansen.de>
*
* $Id$
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "kinetinterface.h"
#include "getifaddrs.h"
#include <netinet/in.h>
#include <ksockaddr.h>
class KInetInterfacePrivate {
public:
QString name;
int flags;
KInetSocketAddress *address;
KInetSocketAddress *netmask;
KInetSocketAddress *broadcast;
KInetSocketAddress *destination;
KInetInterfacePrivate() :
flags(0),
address(0),
netmask(0),
broadcast(0),
destination(0) {
}
KInetInterfacePrivate(const QString _name,
int _flags,
KInetSocketAddress *_address,
KInetSocketAddress *_netmask,
KInetSocketAddress *_broadcast,
KInetSocketAddress *_destination) :
name(_name),
flags(_flags),
address(_address),
netmask(_netmask),
broadcast(_broadcast),
destination(_destination) {
}
~KInetInterfacePrivate() {
if (address)
delete address;
if (netmask)
delete netmask;
if (broadcast)
delete broadcast;
if (destination)
delete destination;
}
KInetInterfacePrivate& operator =(const KInetInterfacePrivate& i) {
name = i.name;
flags = i.flags;
if (i.address)
address = new KInetSocketAddress(*i.address);
else
address = 0;
if (i.netmask)
netmask = new KInetSocketAddress(*i.netmask);
else
netmask = 0;
if (i.broadcast)
broadcast = new KInetSocketAddress(*i.broadcast);
else
broadcast = 0;
if (i.destination)
destination = new KInetSocketAddress(*i.destination);
else
destination = 0;
return *this;
}
};
KInetInterface::KInetInterface() :
d(0) {
}
KInetInterface::KInetInterface(const QString &_name,
int _flags,
KInetSocketAddress *_address,
KInetSocketAddress *_netmask,
KInetSocketAddress *_broadcast,
KInetSocketAddress *_destination) {
d = new KInetInterfacePrivate(_name, _flags,
_address, _netmask,
_broadcast, _destination);
}
KInetInterface::KInetInterface(const KInetInterface &i) :
d(0) {
if (!i.d)
return;
d = new KInetInterfacePrivate();
*d = *i.d;
}
KInetInterface::~KInetInterface() {
if (d)
delete d;
}
KInetInterface& KInetInterface::operator =(const KInetInterface& i) {
if (this == &i)
return *this;
if (d)
delete d;
d = 0;
if (!i.d)
return *this;
d = new KInetInterfacePrivate();
*d = *i.d;
return *this;
}
bool KInetInterface::isValid() const {
return d == 0;
}
QString KInetInterface::displayName() const {
return d->name;
}
QString KInetInterface::name() const {
return d->name;
}
int KInetInterface::flags() const {
return d->flags;
}
KInetSocketAddress *KInetInterface::address() const {
return d->address;
}
KInetSocketAddress *KInetInterface::netmask() const {
return d->netmask;
}
KInetSocketAddress *KInetInterface::broadcastAddress() const {
return d->broadcast;
}
KInetSocketAddress *KInetInterface::destinationAddress() const {
return d->destination;
}
KInetSocketAddress *KInetInterface::getPublicInetAddress() {
QValueVector<KInetInterface> v = getAllInterfaces(true);
// TODO: first step: take the default route interface
// try to find point-2-point interface, because it may be
// a dial-up connection. Take it.
QValueVector<KInetInterface>::const_iterator it = v.begin();
while (it != v.end()) {
if (((*it).flags() & (PointToPoint | Up | Running)) &&
(!((*it).flags() & Loopback)) &&
(*it).address() &&
((*it).address()->family() == AF_INET))
return new KInetSocketAddress(*(*it).address());
it++;
}
// otherwise, just take the first non-loopback interface
it = v.begin();
while (it != v.end()) {
if (((*it).flags() & (Up | Running)) &&
(!((*it).flags() & Loopback)) &&
(*it).address() &&
((*it).address()->family() == AF_INET))
return new KInetSocketAddress(*(*it).address());
it++;
}
// ok, giving up, try to take loopback
it = v.begin();
while (it != v.end()) {
if (((*it).flags() & (Up | Running)) &&
(*it).address())
return new KInetSocketAddress(*(*it).address());
it++;
}
// not even loopback..
return 0;
}
namespace {
KInetSocketAddress *createAddress(struct sockaddr *a) {
if (!a)
return 0;
else if (a->sa_family == AF_INET)
return new KInetSocketAddress((struct sockaddr_in*) a,
sizeof(struct sockaddr_in));
#ifdef AF_INET6
else if (a->sa_family == AF_INET6)
return new KInetSocketAddress((struct sockaddr_in6*) a,
sizeof(struct sockaddr_in6));
#endif
else
return 0;
}
int convertFlags(int flags) {
int r = 0;
if (flags & IFF_UP)
r |= KInetInterface::Up;
if (flags & IFF_BROADCAST)
r |= KInetInterface::Broadcast;
if (flags & IFF_LOOPBACK)
r |= KInetInterface::Loopback;
if (flags & IFF_POINTOPOINT)
r |= KInetInterface::PointToPoint;
if (flags & IFF_RUNNING)
r |= KInetInterface::Running;
if (flags & IFF_MULTICAST)
r |= KInetInterface::Multicast;
return r;
}
}
QValueVector<KInetInterface> KInetInterface::getAllInterfaces(bool includeLoopback) {
struct kde_ifaddrs *ads;
struct kde_ifaddrs *a;
QValueVector<KInetInterface> r;
if (kde_getifaddrs(&ads))
return r;
a = ads;
while (a) {
if ((a->ifa_flags & IFF_LOOPBACK) && !includeLoopback) {
a = a->ifa_next;
continue;
}
r.push_back(KInetInterface(QString::fromUtf8(a->ifa_name),
convertFlags(a->ifa_flags),
createAddress(a->ifa_addr),
createAddress(a->ifa_netmask),
(a->ifa_flags & IFF_BROADCAST) ?
createAddress(a->ifa_broadaddr) : 0,
(a->ifa_flags & IFF_POINTOPOINT) ?
createAddress(a->ifa_dstaddr) : 0));
a = a->ifa_next;
}
kde_freeifaddrs(ads);
return r;
}