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Diffstat (limited to 'src/network/kernel/qhostinfo_win.cpp')
| -rw-r--r-- | src/network/kernel/qhostinfo_win.cpp | 295 |
1 files changed, 295 insertions, 0 deletions
diff --git a/src/network/kernel/qhostinfo_win.cpp b/src/network/kernel/qhostinfo_win.cpp new file mode 100644 index 0000000..0a34e2b --- /dev/null +++ b/src/network/kernel/qhostinfo_win.cpp @@ -0,0 +1,295 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (qt-info@nokia.com) +** +** This file is part of the QtNetwork module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#if defined Q_CC_MSVC && _MSC_VER <=1300 +//VC.net 2002 support for templates doesn't match some PSDK requirements +#define _WSPIAPI_COUNTOF(_Array) (sizeof(_Array) / sizeof(_Array[0])) +#endif + +#include <winsock2.h> + +#include "qhostinfo_p.h" +#include "private/qnativesocketengine_p.h" +#include <ws2tcpip.h> +#include <qlibrary.h> +#include <qtimer.h> +#include <qmutex.h> +#include <private/qmutexpool_p.h> + +QT_BEGIN_NAMESPACE + +//#define QHOSTINFO_DEBUG + +// Older SDKs do not include the addrinfo struct declaration, so we +// include a copy of it here. +struct qt_addrinfo +{ + int ai_flags; + int ai_family; + int ai_socktype; + int ai_protocol; + size_t ai_addrlen; + char *ai_canonname; + sockaddr *ai_addr; + qt_addrinfo *ai_next; +}; + +// sockaddr_in6 size changed between old and new SDK +// Only the new version is the correct one, so always +// use this structure. +struct qt_in6_addr { + uchar qt_s6_addr[16]; +}; + +struct qt_sockaddr_in6 { + short sin6_family; /* AF_INET6 */ + u_short sin6_port; /* Transport level port number */ + u_long sin6_flowinfo; /* IPv6 flow information */ + struct qt_in6_addr sin6_addr; /* IPv6 address */ + u_long sin6_scope_id; /* set of interfaces for a scope */ +}; + +//### +#define QT_SOCKLEN_T int +#ifndef NI_MAXHOST // already defined to 1025 in ws2tcpip.h? +#define NI_MAXHOST 1024 +#endif + +typedef int (__stdcall *getnameinfoProto)(const sockaddr *, QT_SOCKLEN_T, const char *, DWORD, const char *, DWORD, int); +typedef int (__stdcall *getaddrinfoProto)(const char *, const char *, const qt_addrinfo *, qt_addrinfo **); +typedef int (__stdcall *freeaddrinfoProto)(qt_addrinfo *); +static getnameinfoProto local_getnameinfo = 0; +static getaddrinfoProto local_getaddrinfo = 0; +static freeaddrinfoProto local_freeaddrinfo = 0; + +static void resolveLibrary() +{ + // Attempt to resolve getaddrinfo(); without it we'll have to fall + // back to gethostbyname(), which has no IPv6 support. +#if !defined(Q_OS_WINCE) + local_getaddrinfo = (getaddrinfoProto) QLibrary::resolve(QLatin1String("ws2_32.dll"), "getaddrinfo"); + local_freeaddrinfo = (freeaddrinfoProto) QLibrary::resolve(QLatin1String("ws2_32.dll"), "freeaddrinfo"); + local_getnameinfo = (getnameinfoProto) QLibrary::resolve(QLatin1String("ws2_32.dll"), "getnameinfo"); +#else + local_getaddrinfo = (getaddrinfoProto) QLibrary::resolve(QLatin1String("ws2.dll"), "getaddrinfo"); + local_freeaddrinfo = (freeaddrinfoProto) QLibrary::resolve(QLatin1String("ws2.dll"), "freeaddrinfo"); + local_getnameinfo = (getnameinfoProto) QLibrary::resolve(QLatin1String("ws2.dll"), "getnameinfo"); +#endif +} + +#if defined(Q_OS_WINCE) +#include <qmutex.h> +QMutex qPrivCEMutex; +#endif +/* + Performs a blocking call to gethostbyname or getaddrinfo, stores + the results in a QHostInfo structure and emits the + resultsReady() signal. +*/ +QHostInfo QHostInfoAgent::fromName(const QString &hostName) +{ +#if defined(Q_OS_WINCE) + QMutexLocker locker(&qPrivCEMutex); +#endif + QWindowsSockInit winSock; + + // Load res_init on demand. + static volatile bool triedResolve = false; + if (!triedResolve) { +#ifndef QT_NO_THREAD + QMutexLocker locker(QMutexPool::globalInstanceGet(&local_getaddrinfo)); +#endif + if (!triedResolve) { + resolveLibrary(); + triedResolve = true; + } + } + + QHostInfo results; + results.setHostName(hostName); + +#if defined(QHOSTINFO_DEBUG) + qDebug("QHostInfoAgent::fromName(%p): looking up \"%s\" (IPv6 support is %s)", + this, hostName.toLatin1().constData(), + (local_getaddrinfo && local_freeaddrinfo) ? "enabled" : "disabled"); +#endif + + QHostAddress address; + if (address.setAddress(hostName)) { + // Reverse lookup + if (local_getnameinfo) { + sockaddr_in sa4; + qt_sockaddr_in6 sa6; + sockaddr *sa; + QT_SOCKLEN_T saSize; + if (address.protocol() == QAbstractSocket::IPv4Protocol) { + sa = (sockaddr *)&sa4; + saSize = sizeof(sa4); + memset(&sa4, 0, sizeof(sa4)); + sa4.sin_family = AF_INET; + sa4.sin_addr.s_addr = htonl(address.toIPv4Address()); + } else { + sa = (sockaddr *)&sa6; + saSize = sizeof(sa6); + memset(&sa6, 0, sizeof(sa6)); + sa6.sin6_family = AF_INET6; + memcpy(sa6.sin6_addr.qt_s6_addr, address.toIPv6Address().c, sizeof(sa6.sin6_addr.qt_s6_addr)); + } + + char hbuf[NI_MAXHOST]; + if (local_getnameinfo(sa, saSize, hbuf, sizeof(hbuf), 0, 0, 0) != 0) { + results.setError(QHostInfo::HostNotFound); + results.setErrorString(tr("Host not found")); + return results; + } + results.setHostName(QString::fromLatin1(hbuf)); + } else { + unsigned long addr = inet_addr(hostName.toLatin1().constData()); + struct hostent *ent = gethostbyaddr((const char*)&addr, sizeof(addr), AF_INET); + if (!ent) { + results.setError(QHostInfo::HostNotFound); + results.setErrorString(tr("Host not found")); + return results; + } + results.setHostName(QString::fromLatin1(ent->h_name)); + } + } + + if (local_getaddrinfo && local_freeaddrinfo) { + // Call getaddrinfo, and place all IPv4 addresses at the start + // and the IPv6 addresses at the end of the address list in + // results. + qt_addrinfo *res; + int err = local_getaddrinfo(hostName.toLatin1().constData(), 0, 0, &res); + if (err == 0) { + QList<QHostAddress> addresses; + for (qt_addrinfo *p = res; p != 0; p = p->ai_next) { + switch (p->ai_family) { + case AF_INET: { + QHostAddress addr; + addr.setAddress(ntohl(((sockaddr_in *) p->ai_addr)->sin_addr.s_addr)); + if (!addresses.contains(addr)) + addresses.append(addr); + } + break; + case AF_INET6: { + QHostAddress addr; + addr.setAddress(((qt_sockaddr_in6 *) p->ai_addr)->sin6_addr.qt_s6_addr); + if (!addresses.contains(addr)) + addresses.append(addr); + } + break; + default: + results.setError(QHostInfo::UnknownError); + results.setErrorString(tr("Unknown address type")); + } + } + results.setAddresses(addresses); + local_freeaddrinfo(res); + } else if (WSAGetLastError() == WSAHOST_NOT_FOUND || WSAGetLastError() == WSANO_DATA) { + results.setError(QHostInfo::HostNotFound); + results.setErrorString(tr("Host not found")); + } else { + results.setError(QHostInfo::UnknownError); + results.setErrorString(tr("Unknown error")); + } + } else { + // Fall back to gethostbyname, which only supports IPv4. + hostent *ent = gethostbyname(hostName.toLatin1().constData()); + if (ent) { + char **p; + QList<QHostAddress> addresses; + switch (ent->h_addrtype) { + case AF_INET: + for (p = ent->h_addr_list; *p != 0; p++) { + long *ip4Addr = (long *) *p; + QHostAddress temp; + temp.setAddress(ntohl(*ip4Addr)); + addresses << temp; + } + break; + default: + results.setError(QHostInfo::UnknownError); + results.setErrorString(tr("Unknown address type")); + break; + } + results.setAddresses(addresses); + } else if (WSAGetLastError() == 11001) { + results.setErrorString(tr("Host not found")); + results.setError(QHostInfo::HostNotFound); + } else { + results.setErrorString(tr("Unknown error")); + results.setError(QHostInfo::UnknownError); + } + } + +#if defined(QHOSTINFO_DEBUG) + if (results.error() != QHostInfo::NoError) { + qDebug("QHostInfoAgent::run(%p): error (%s)", + this, results.errorString().toLatin1().constData()); + } else { + QString tmp; + QList<QHostAddress> addresses = results.addresses(); + for (int i = 0; i < addresses.count(); ++i) { + if (i != 0) tmp += ", "; + tmp += addresses.at(i).toString(); + } + qDebug("QHostInfoAgent::run(%p): found %i entries: {%s}", + this, addresses.count(), tmp.toLatin1().constData()); + } +#endif + return results; +} + +QString QHostInfo::localHostName() +{ + QWindowsSockInit winSock; + + char hostName[512]; + if (gethostname(hostName, sizeof(hostName)) == -1) + return QString(); + hostName[sizeof(hostName) - 1] = '\0'; + return QString::fromLocal8Bit(hostName); +} + +// QString QHostInfo::localDomainName() defined in qnetworkinterface_win.cpp + +QT_END_NAMESPACE |