source: trunk/src/network/kernel/qnetworkinterface_unix.cpp@ 17

Last change on this file since 17 was 2, checked in by Dmitry A. Kuminov, 17 years ago

Initially imported qt-all-opensource-src-4.5.1 from Trolltech.
File size: 14.1 KB
Line 
1/****************************************************************************
2**
3** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
4** Contact: Qt Software Information ([email protected])
5**
6** This file is part of the QtNetwork module of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:LGPL$
9** Commercial Usage
10** Licensees holding valid Qt Commercial licenses may use this file in
11** accordance with the Qt Commercial License Agreement provided with the
12** Software or, alternatively, in accordance with the terms contained in
13** a written agreement between you and Nokia.
14**
15** GNU Lesser General Public License Usage
16** Alternatively, this file may be used under the terms of the GNU Lesser
17** General Public License version 2.1 as published by the Free Software
18** Foundation and appearing in the file LICENSE.LGPL included in the
19** packaging of this file. Please review the following information to
20** ensure the GNU Lesser General Public License version 2.1 requirements
21** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
22**
23** In addition, as a special exception, Nokia gives you certain
24** additional rights. These rights are described in the Nokia Qt LGPL
25** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
26** package.
27**
28** GNU General Public License Usage
29** Alternatively, this file may be used under the terms of the GNU
30** General Public License version 3.0 as published by the Free Software
31** Foundation and appearing in the file LICENSE.GPL included in the
32** packaging of this file. Please review the following information to
33** ensure the GNU General Public License version 3.0 requirements will be
34** met: http://www.gnu.org/copyleft/gpl.html.
35**
36** If you are unsure which license is appropriate for your use, please
37** contact the sales department at [email protected].
38** $QT_END_LICENSE$
39**
40****************************************************************************/
41
42#include "qset.h"
43#include "qnetworkinterface.h"
44#include "qnetworkinterface_p.h"
45#include "qalgorithms.h"
46
47#ifndef QT_NO_NETWORKINTERFACE
48
49#define IP_MULTICAST // make AIX happy and define IFF_MULTICAST
50
51#include <sys/types.h>
52#include <sys/socket.h>
53
54#ifdef Q_OS_SOLARIS
55# include <sys/sockio.h>
56#endif
57#include <net/if.h>
58
59#ifndef QT_NO_GETIFADDRS
60# include <ifaddrs.h>
61#endif
62
63#ifdef QT_LINUXBASE
64# include <arpa/inet.h>
65# ifndef SIOCGIFBRDADDR
66# define SIOCGIFBRDADDR 0x8919
67# endif
68#endif // QT_LINUXBASE
69
70#include <qplatformdefs.h>
71
72QT_BEGIN_NAMESPACE
73
74static QHostAddress addressFromSockaddr(sockaddr *sa)
75{
76 QHostAddress address;
77 if (!sa)
78 return address;
79
80 if (sa->sa_family == AF_INET)
81 address.setAddress(htonl(((sockaddr_in *)sa)->sin_addr.s_addr));
82#ifndef QT_NO_IPV6
83 else if (sa->sa_family == AF_INET6)
84 address.setAddress(((sockaddr_in6 *)sa)->sin6_addr.s6_addr);
85#endif
86 return address;
87
88}
89
90static QNetworkInterface::InterfaceFlags convertFlags(uint rawFlags)
91{
92 QNetworkInterface::InterfaceFlags flags = 0;
93 flags |= (rawFlags & IFF_UP) ? QNetworkInterface::IsUp : QNetworkInterface::InterfaceFlag(0);
94 flags |= (rawFlags & IFF_RUNNING) ? QNetworkInterface::IsRunning : QNetworkInterface::InterfaceFlag(0);
95 flags |= (rawFlags & IFF_BROADCAST) ? QNetworkInterface::CanBroadcast : QNetworkInterface::InterfaceFlag(0);
96 flags |= (rawFlags & IFF_LOOPBACK) ? QNetworkInterface::IsLoopBack : QNetworkInterface::InterfaceFlag(0);
97#ifdef IFF_POINTOPOINT //cygwin doesn't define IFF_POINTOPOINT
98 flags |= (rawFlags & IFF_POINTOPOINT) ? QNetworkInterface::IsPointToPoint : QNetworkInterface::InterfaceFlag(0);
99#endif
100
101#ifdef IFF_MULTICAST
102 flags |= (rawFlags & IFF_MULTICAST) ? QNetworkInterface::CanMulticast : QNetworkInterface::InterfaceFlag(0);
103#endif
104 return flags;
105}
106
107#ifdef QT_NO_GETIFADDRS
108// getifaddrs not available
109
110static const int STORAGEBUFFER_GROWTH = 256;
111
112static QSet<QByteArray> interfaceNames(int socket)
113{
114 QSet<QByteArray> result;
115#ifdef QT_NO_IPV6IFNAME
116 QByteArray storageBuffer;
117 struct ifconf interfaceList;
118
119 forever {
120 // grow the storage buffer
121 storageBuffer.resize(storageBuffer.size() + STORAGEBUFFER_GROWTH);
122 interfaceList.ifc_buf = storageBuffer.data();
123 interfaceList.ifc_len = storageBuffer.size();
124
125 // get the interface list
126 if (::ioctl(socket, SIOCGIFCONF, &interfaceList) >= 0) {
127 if (int(interfaceList.ifc_len + sizeof(ifreq) + 64) < storageBuffer.size()) {
128 // if the buffer was big enough, break
129 storageBuffer.resize(interfaceList.ifc_len);
130 break;
131 }
132 } else {
133 // internal error
134 return result;
135 }
136 if (storageBuffer.size() > 100000) {
137 // out of space
138 return result;
139 }
140 }
141
142 int interfaceCount = interfaceList.ifc_len / sizeof(ifreq);
143 for (int i = 0; i < interfaceCount; ++i) {
144 QByteArray name = QByteArray(interfaceList.ifc_req[i].ifr_name);
145 if (!name.isEmpty())
146 result << name;
147 }
148
149 return result;
150#else
151 Q_UNUSED(socket);
152
153 // use if_nameindex
154 struct if_nameindex *interfaceList = ::if_nameindex();
155 for (struct if_nameindex *ptr = interfaceList; ptr && ptr->if_name; ++ptr)
156 result << ptr->if_name;
157
158 if_freenameindex(interfaceList);
159 return result;
160#endif
161}
162
163static QNetworkInterfacePrivate *findInterface(int socket, QList<QNetworkInterfacePrivate *> &interfaces,
164 struct ifreq &req)
165{
166 QNetworkInterfacePrivate *iface = 0;
167 int ifindex = 0;
168
169#ifndef QT_NO_IPV6IFNAME
170 // Get the interface index
171 ifindex = if_nametoindex(req.ifr_name);
172
173 // find the interface data
174 QList<QNetworkInterfacePrivate *>::Iterator if_it = interfaces.begin();
175 for ( ; if_it != interfaces.end(); ++if_it)
176 if ((*if_it)->index == ifindex) {
177 // existing interface
178 iface = *if_it;
179 break;
180 }
181#else
182 // Search by name
183 QList<QNetworkInterfacePrivate *>::Iterator if_it = interfaces.begin();
184 for ( ; if_it != interfaces.end(); ++if_it)
185 if ((*if_it)->name == QLatin1String(req.ifr_name)) {
186 // existing interface
187 iface = *if_it;
188 break;
189 }
190#endif
191
192 if (!iface) {
193 // new interface, create data:
194 iface = new QNetworkInterfacePrivate;
195 iface->index = ifindex;
196 interfaces << iface;
197
198#ifdef SIOCGIFNAME
199 // Get the canonical name
200 QByteArray oldName = req.ifr_name;
201 if (::ioctl(socket, SIOCGIFNAME, &req) >= 0) {
202 iface->name = QString::fromLatin1(req.ifr_name);
203
204 // reset the name:
205 memcpy(req.ifr_name, oldName, qMin<int>(oldName.length() + 1, sizeof(req.ifr_name) - 1));
206 } else
207#endif
208 {
209 // use this name anyways
210 iface->name = QString::fromLatin1(req.ifr_name);
211 }
212
213 // Get interface flags
214 if (::ioctl(socket, SIOCGIFFLAGS, &req) >= 0) {
215 iface->flags = convertFlags(req.ifr_flags);
216 }
217
218#ifdef SIOCGIFHWADDR
219 // Get the HW address
220 if (::ioctl(socket, SIOCGIFHWADDR, &req) >= 0) {
221 uchar *addr = (uchar *)&req.ifr_addr;
222 iface->hardwareAddress = iface->makeHwAddress(6, addr);
223 }
224#endif
225 }
226
227 return iface;
228}
229
230static QList<QNetworkInterfacePrivate *> interfaceListing()
231{
232 QList<QNetworkInterfacePrivate *> interfaces;
233
234 int socket;
235 if ((socket = ::socket(AF_INET, SOCK_STREAM, IPPROTO_IP)) == -1)
236 return interfaces; // error
237
238 QSet<QByteArray> names = interfaceNames(socket);
239 QSet<QByteArray>::ConstIterator it = names.constBegin();
240 for ( ; it != names.constEnd(); ++it) {
241 ifreq req;
242 memset(&req, 0, sizeof(ifreq));
243 memcpy(req.ifr_name, *it, qMin<int>(it->length() + 1, sizeof(req.ifr_name) - 1));
244
245 QNetworkInterfacePrivate *iface = findInterface(socket, interfaces, req);
246
247 // Get the interface broadcast address
248 QNetworkAddressEntry entry;
249 if (iface->flags & QNetworkInterface::CanBroadcast) {
250 if (::ioctl(socket, SIOCGIFBRDADDR, &req) >= 0) {
251 sockaddr *sa = &req.ifr_addr;
252 if (sa->sa_family == AF_INET)
253 entry.setBroadcast(addressFromSockaddr(sa));
254 }
255 }
256
257 // Get the interface netmask
258 if (::ioctl(socket, SIOCGIFNETMASK, &req) >= 0) {
259 sockaddr *sa = &req.ifr_addr;
260 entry.setNetmask(addressFromSockaddr(sa));
261 }
262
263 // Get the address of the interface
264 if (::ioctl(socket, SIOCGIFADDR, &req) >= 0) {
265 sockaddr *sa = &req.ifr_addr;
266 entry.setIp(addressFromSockaddr(sa));
267 }
268
269 iface->addressEntries << entry;
270 }
271
272 ::close(socket);
273 return interfaces;
274}
275
276#else
277// use getifaddrs
278
279// platform-specific defs:
280# ifdef Q_OS_LINUX
281QT_BEGIN_INCLUDE_NAMESPACE
282# include <features.h>
283QT_END_INCLUDE_NAMESPACE
284# endif
285
286# if defined(Q_OS_LINUX) && __GLIBC__ - 0 >= 2 && __GLIBC_MINOR__ - 0 >= 1
287# include <netpacket/packet.h>
288
289static QList<QNetworkInterfacePrivate *> createInterfaces(ifaddrs *rawList)
290{
291 QList<QNetworkInterfacePrivate *> interfaces;
292
293 for (ifaddrs *ptr = rawList; ptr; ptr = ptr->ifa_next) {
294 if ( !ptr->ifa_addr )
295 continue;
296
297 // Get the interface index
298 int ifindex = if_nametoindex(ptr->ifa_name);
299
300 // on Linux we use AF_PACKET and sockaddr_ll to obtain hHwAddress
301 QList<QNetworkInterfacePrivate *>::Iterator if_it = interfaces.begin();
302 for ( ; if_it != interfaces.end(); ++if_it)
303 if ((*if_it)->index == ifindex) {
304 // this one has been added already
305 if ( ptr->ifa_addr->sa_family == AF_PACKET
306 && (*if_it)->hardwareAddress.isEmpty()) {
307 sockaddr_ll *sll = (sockaddr_ll *)ptr->ifa_addr;
308 (*if_it)->hardwareAddress = (*if_it)->makeHwAddress(sll->sll_halen, (uchar*)sll->sll_addr);
309 }
310 break;
311 }
312 if ( if_it != interfaces.end() )
313 continue;
314
315 QNetworkInterfacePrivate *iface = new QNetworkInterfacePrivate;
316 interfaces << iface;
317 iface->index = ifindex;
318 iface->name = QString::fromLatin1(ptr->ifa_name);
319 iface->flags = convertFlags(ptr->ifa_flags);
320
321 if ( ptr->ifa_addr->sa_family == AF_PACKET ) {
322 sockaddr_ll *sll = (sockaddr_ll *)ptr->ifa_addr;
323 iface->hardwareAddress = iface->makeHwAddress(sll->sll_halen, (uchar*)sll->sll_addr);
324 }
325 }
326
327 return interfaces;
328}
329
330# elif defined(Q_OS_BSD4)
331QT_BEGIN_INCLUDE_NAMESPACE
332# include <net/if_dl.h>
333QT_END_INCLUDE_NAMESPACE
334
335static QList<QNetworkInterfacePrivate *> createInterfaces(ifaddrs *rawList)
336{
337 QList<QNetworkInterfacePrivate *> interfaces;
338
339 // on NetBSD we use AF_LINK and sockaddr_dl
340 // scan the list for that family
341 for (ifaddrs *ptr = rawList; ptr; ptr = ptr->ifa_next)
342 if (ptr->ifa_addr && ptr->ifa_addr->sa_family == AF_LINK) {
343 QNetworkInterfacePrivate *iface = new QNetworkInterfacePrivate;
344 interfaces << iface;
345
346 sockaddr_dl *sdl = (sockaddr_dl *)ptr->ifa_addr;
347 iface->index = sdl->sdl_index;
348 iface->name = QString::fromLatin1(ptr->ifa_name);
349 iface->flags = convertFlags(ptr->ifa_flags);
350 iface->hardwareAddress = iface->makeHwAddress(sdl->sdl_alen, (uchar*)LLADDR(sdl));
351 }
352
353 return interfaces;
354}
355
356# else // Generic version
357
358static QList<QNetworkInterfacePrivate *> createInterfaces(ifaddrs *rawList)
359{
360 QList<QNetworkInterfacePrivate *> interfaces;
361
362 // make sure there's one entry for each interface
363 for (ifaddrs *ptr = rawList; ptr; ptr = ptr->ifa_next) {
364 // Get the interface index
365 int ifindex = if_nametoindex(ptr->ifa_name);
366
367 QList<QNetworkInterfacePrivate *>::Iterator if_it = interfaces.begin();
368 for ( ; if_it != interfaces.end(); ++if_it)
369 if ((*if_it)->index == ifindex)
370 // this one has been added already
371 break;
372
373 if (if_it == interfaces.end()) {
374 // none found, create
375 QNetworkInterfacePrivate *iface = new QNetworkInterfacePrivate;
376 interfaces << iface;
377
378 iface->index = ifindex;
379 iface->name = QString::fromLatin1(ptr->ifa_name);
380 iface->flags = convertFlags(ptr->ifa_flags);
381 }
382 }
383
384 return interfaces;
385}
386
387# endif
388
389
390static QList<QNetworkInterfacePrivate *> interfaceListing()
391{
392 QList<QNetworkInterfacePrivate *> interfaces;
393
394 int socket;
395 if ((socket = ::socket(AF_INET, SOCK_STREAM, IPPROTO_IP)) == -1)
396 return interfaces; // error
397
398 ifaddrs *interfaceListing;
399 if (getifaddrs(&interfaceListing) == -1) {
400 // error
401 ::close(socket);
402 return interfaces;
403 }
404
405 interfaces = createInterfaces(interfaceListing);
406 for (ifaddrs *ptr = interfaceListing; ptr; ptr = ptr->ifa_next) {
407 // Get the interface index
408 int ifindex = if_nametoindex(ptr->ifa_name);
409 QNetworkInterfacePrivate *iface = 0;
410 QList<QNetworkInterfacePrivate *>::Iterator if_it = interfaces.begin();
411 for ( ; if_it != interfaces.end(); ++if_it)
412 if ((*if_it)->index == ifindex) {
413 // found this interface already
414 iface = *if_it;
415 break;
416 }
417 if (!iface) {
418 // skip all non-IP interfaces
419 continue;
420 }
421
422 QNetworkAddressEntry entry;
423 entry.setIp(addressFromSockaddr(ptr->ifa_addr));
424 if (entry.ip().isNull())
425 // could not parse the address
426 continue;
427
428 entry.setNetmask(addressFromSockaddr(ptr->ifa_netmask));
429 if (iface->flags & QNetworkInterface::CanBroadcast)
430 entry.setBroadcast(addressFromSockaddr(ptr->ifa_broadaddr));
431
432 iface->addressEntries << entry;
433 }
434
435 freeifaddrs(interfaceListing);
436 ::close(socket);
437 return interfaces;
438}
439#endif
440
441QList<QNetworkInterfacePrivate *> QNetworkInterfaceManager::scan()
442{
443 return interfaceListing();
444}
445
446QT_END_NAMESPACE
447
448#endif // QT_NO_NETWORKINTERFACE
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