/**************************************************************************** ** ** 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 #include "qhostinfo_p.h" #include "private/qnativesocketengine_p.h" #include #include #include #include #include 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 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 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 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 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