QHostInfo QHostInfoAgent::fromName(const QString &hostName)
{
QHostInfo results;
#if defined(QHOSTINFO_DEBUG)
qDebug("QHostInfoAgent::fromName(%s) looking up...",
hostName.toLatin1().constData());
#endif
// Load res_init on demand.
static volatile bool triedResolve = false;
if (!triedResolve) {
QMutexLocker locker(QMutexPool::globalInstanceGet(&local_res_init));
if (!triedResolve) {
resolveLibrary();
triedResolve = true;
}
}
// If res_init is available, poll it.
if (local_res_init)
local_res_init();
QHostAddress address;
if (address.setAddress(hostName)) {
// Reverse lookup
// Reverse lookups using getnameinfo are broken on darwin, use gethostbyaddr instead.
#if !defined (QT_NO_GETADDRINFO) && !defined (Q_OS_DARWIN)
sockaddr_in sa4;
#ifndef QT_NO_IPV6
sockaddr_in6 sa6;
#endif
sockaddr *sa = 0;
QT_SOCKLEN_T saSize = 0;
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());
}
#ifndef QT_NO_IPV6
else {
sa = (sockaddr *)&sa6;
saSize = sizeof(sa6);
memset(&sa6, 0, sizeof(sa6));
sa6.sin6_family = AF_INET6;
memcpy(sa6.sin6_addr.s6_addr, address.toIPv6Address().c, sizeof(sa6.sin6_addr.s6_addr));
}
#endif
char hbuf[NI_MAXHOST];
if (sa && getnameinfo(sa, saSize, hbuf, sizeof(hbuf), 0, 0, 0) == 0)
results.setHostName(QString::fromLatin1(hbuf));
#else
in_addr_t inetaddr = qt_safe_inet_addr(hostName.toLatin1().constData());
struct hostent *ent = gethostbyaddr((const char *)&inetaddr, sizeof(inetaddr), AF_INET);
if (ent)
results.setHostName(QString::fromLatin1(ent->h_name));
#endif
if (results.hostName().isEmpty())
results.setHostName(address.toString());
results.setAddresses(QList<QHostAddress>() << address);
return results;
}
// IDN support
QByteArray aceHostname = QUrl::toAce(hostName);
results.setHostName(hostName);
if (aceHostname.isEmpty()) {
results.setError(QHostInfo::HostNotFound);
results.setErrorString(hostName.isEmpty() ?
QCoreApplication::translate("QHostInfoAgent", "No host name given") :
QCoreApplication::translate("QHostInfoAgent", "Invalid hostname"));
return results;
}
#if !defined (QT_NO_GETADDRINFO)
// Call getaddrinfo, and place all IPv4 addresses at the start and
// the IPv6 addresses at the end of the address list in results.
addrinfo *res = 0;
struct addrinfo hints;
memset(&hints, 0, sizeof(hints));
hints.ai_family = PF_UNSPEC;
#ifdef Q_ADDRCONFIG
hints.ai_flags = Q_ADDRCONFIG;
#endif
int result = getaddrinfo(aceHostname.constData(), 0, &hints, &res);
# ifdef Q_ADDRCONFIG
if (result == EAI_BADFLAGS) {
// if the lookup failed with AI_ADDRCONFIG set, try again without it
hints.ai_flags = 0;
result = getaddrinfo(aceHostname.constData(), 0, &hints, &res);
}
# endif
if (result == 0) {
addrinfo *node = res;
QList<QHostAddress> addresses;
while (node) {
#ifdef QHOSTINFO_DEBUG
qDebug() << "getaddrinfo node: flags:" << node->ai_flags << "family:" << node->ai_family << "ai_socktype:" << node->ai_socktype << "ai_protocol:" << node->ai_protocol << "ai_addrlen:" << node->ai_addrlen;
#endif
if (node->ai_family == AF_INET) {
QHostAddress addr;
addr.setAddress(ntohl(((sockaddr_in *) node->ai_addr)->sin_addr.s_addr));
if (!addresses.contains(addr))
addresses.append(addr);
}
#ifndef QT_NO_IPV6
else if (node->ai_family == AF_INET6) {
QHostAddress addr;
sockaddr_in6 *sa6 = (sockaddr_in6 *) node->ai_addr;
addr.setAddress(sa6->sin6_addr.s6_addr);
if (sa6->sin6_scope_id)
addr.setScopeId(QString::number(sa6->sin6_scope_id));
if (!addresses.contains(addr))
addresses.append(addr);
}
#endif
node = node->ai_next;
}
if (addresses.isEmpty() && node == 0) {
// Reached the end of the list, but no addresses were found; this
// means the list contains one or more unknown address types.
results.setError(QHostInfo::UnknownError);
results.setErrorString(tr("Unknown address type"));
}
results.setAddresses(addresses);
freeaddrinfo(res);
} else if (result == EAI_NONAME
|| result == EAI_FAIL
#ifdef EAI_NODATA
// EAI_NODATA is deprecated in RFC 3493
|| result == EAI_NODATA
#endif
) {
results.setError(QHostInfo::HostNotFound);
results.setErrorString(tr("Host not found"));
} else {
results.setError(QHostInfo::UnknownError);
results.setErrorString(QString::fromLocal8Bit(gai_strerror(result)));
}
#else
// Fall back to gethostbyname for platforms that don't define
// getaddrinfo. gethostbyname does not support IPv6, and it's not
// reentrant on all platforms. For now this is okay since we only
// use one QHostInfoAgent, but if more agents are introduced, locking
// must be provided.
QMutexLocker locker(::getHostByNameMutex());
hostent *result = gethostbyname(aceHostname.constData());
if (result) {
if (result->h_addrtype == AF_INET) {
QList<QHostAddress> addresses;
for (char **p = result->h_addr_list; *p != 0; p++) {
QHostAddress addr;
addr.setAddress(ntohl(*((quint32 *)*p)));
if (!addresses.contains(addr))
addresses.prepend(addr);
}
results.setAddresses(addresses);
} else {
results.setError(QHostInfo::UnknownError);
results.setErrorString(tr("Unknown address type"));
}
#if !defined(Q_OS_VXWORKS)
} else if (h_errno == HOST_NOT_FOUND || h_errno == NO_DATA
|| h_errno == NO_ADDRESS) {
results.setError(QHostInfo::HostNotFound);
results.setErrorString(tr("Host not found"));
#endif
} else {
results.setError(QHostInfo::UnknownError);
results.setErrorString(tr("Unknown error"));
}
#endif // !defined (QT_NO_GETADDRINFO)
#if defined(QHOSTINFO_DEBUG)
if (results.error() != QHostInfo::NoError) {
qDebug("QHostInfoAgent::fromName(): error #%d %s",
h_errno, 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::fromName(): found %i entries for \"%s\": {%s}",
addresses.count(), hostName.toLatin1().constData(),
tmp.toLatin1().constData());
}
#endif
return results;
}
QHostInfo QHostInfoAgent::fromName(const QString &hostName)
{
QHostInfo results;
results.setHostName(hostName);
#if defined(QHOSTINFO_DEBUG)
qDebug("QHostInfoAgent::fromName(%s) looking up...",
hostName.toLatin1().constData());
#endif
QHostAddress address;
if (address.setAddress(hostName)) {
// Reverse lookup
// Reverse lookups using getnameinfo are broken on darwin, use gethostbyaddr instead.
#if !defined (QT_NO_GETADDRINFO) && !defined (Q_OS_DARWIN)
sockaddr_in sa4;
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.s6_addr, address.toIPv6Address().c, sizeof(sa6.sin6_addr.s6_addr));
}
char hbuf[NI_MAXHOST];
if (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
in_addr_t inetaddr = inet_addr(hostName.toLatin1().constData());
struct hostent *ent = gethostbyaddr((const char *)&inetaddr, sizeof(inetaddr), AF_INET);
if (!ent) {
results.setError(QHostInfo::HostNotFound);
results.setErrorString(tr("Host not found"));
return results;
}
results.setHostName(QString::fromLatin1(ent->h_name));
#endif
}
#if !defined (QT_NO_GETADDRINFO)
// Call getaddrinfo, and place all IPv4 addresses at the start and
// the IPv6 addresses at the end of the address list in results.
addrinfo *res = 0;
struct addrinfo hints;
memset(&hints, 0, sizeof(hints));
hints.ai_family = PF_UNSPEC;
int result = getaddrinfo(hostName.toLatin1().constData(), 0, &hints, &res);
if (result == 0) {
addrinfo *node = res;
QList<QHostAddress> addresses;
while (node) {
if (node->ai_family == AF_INET) {
QHostAddress addr;
addr.setAddress(ntohl(((sockaddr_in *) node->ai_addr)->sin_addr.s_addr));
if (!addresses.contains(addr))
addresses.prepend(addr);
} else if (node->ai_family == AF_INET6) {
QHostAddress addr;
addr.setAddress(((sockaddr_in6 *) node->ai_addr)->sin6_addr.s6_addr);
if (!addresses.contains(addr))
addresses.append(addr);
} else {
results.setError(QHostInfo::UnknownError);
results.setErrorString(tr("Unknown address type"));
break;
}
node = node->ai_next;
}
results.setAddresses(addresses);
freeaddrinfo(res);
} else if (result == EAI_NONAME
|| result == EAI_FAIL
|| result == EAI_FAIL
#ifdef EAI_NODATA
// EAI_NODATA is deprecated in RFC 3493
|| result == EAI_NODATA
#endif
) {
results.setError(QHostInfo::HostNotFound);
results.setErrorString(tr("Host not found"));
} else {
results.setError(QHostInfo::UnknownError);
results.setErrorString(QString::fromLocal8Bit(gai_strerror(result)));
}
#else
// Fall back to gethostbyname for platforms that don't define
// getaddrinfo. gethostbyname does not support IPv6, and it's not
// reentrant on all platforms. For now this is okay since we only
// use one QHostInfoAgent, but if more agents are introduced, locking
// must be provided.
QMutexLocker locker(::getHostByNameMutex());
hostent *result = gethostbyname(hostName.toLatin1().constData());
if (result) {
if (result->h_addrtype == AF_INET) {
QList<QHostAddress> addresses;
for (char **p = result->h_addr_list; *p != 0; p++) {
QHostAddress addr;
addr.setAddress(ntohl(*((quint32 *)*p)));
if (!addresses.contains(addr))
addresses.prepend(addr);
}
results.setAddresses(addresses);
} else {
results.setError(QHostInfo::UnknownError);
results.setErrorString(tr("Unknown address type"));
}
} else if (h_errno == HOST_NOT_FOUND || h_errno == NO_DATA
|| h_errno == NO_ADDRESS) {
results.setError(QHostInfo::HostNotFound);
results.setErrorString(tr("Host not found"));
} else {
results.setError(QHostInfo::UnknownError);
results.setErrorString(tr("Unknown error"));
}
#endif // !defined (QT_NO_GETADDRINFO)
#if defined(QHOSTINFO_DEBUG)
if (results.error() != QHostInfo::NoError) {
qDebug("QHostInfoAgent::fromName(): error #%d %s",
h_errno, 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::fromName(): found %i entries for \"%s\": {%s}",
addresses.count(), hostName.toLatin1().constData(),
tmp.toLatin1().constData());
}
#endif
return results;
}
QHostInfo QHostInfoAgent::fromName(const QString &hostName, QSharedPointer<QNetworkSession> networkSession)
{
QHostInfo results;
// Connect to ESOCK
RSocketServ socketServ(qt_symbianGetSocketServer());
RHostResolver hostResolver;
int err;
if (networkSession)
err = QNetworkSessionPrivate::nativeOpenHostResolver(*networkSession, hostResolver, KAfInet, KProtocolInetUdp);
else
err = hostResolver.Open(socketServ, KAfInet, KProtocolInetUdp);
if (err) {
setError_helper(results, err);
return results;
}
TNameEntry nameResult;
#if defined(QHOSTINFO_DEBUG)
qDebug("QHostInfoAgent::fromName(%s) looking up...",
hostName.toLatin1().constData());
#endif
QHostAddress address;
if (address.setAddress(hostName)) {
// Reverse lookup
#if defined(QHOSTINFO_DEBUG)
qDebug("(reverse lookup)");
#endif
TInetAddr IpAdd;
IpAdd.Input(qt_QString2TPtrC(hostName));
// Synchronous request. nameResult returns Host Name.
err = hostResolver.GetByAddress(IpAdd, nameResult);
if (err) {
//for behavioural compatibility with Qt 4.7 and unix/windows
//backends: don't report error, return ip address as host name
results.setHostName(address.toString());
} else {
results.setHostName(qt_TDesC2QString(nameResult().iName));
}
results.setAddresses(QList<QHostAddress>() << address);
return results;
}
// IDN support
QByteArray aceHostname = QUrl::toAce(hostName);
results.setHostName(hostName);
if (aceHostname.isEmpty()) {
results.setError(QHostInfo::HostNotFound);
results.setErrorString(hostName.isEmpty() ?
QCoreApplication::translate("QHostInfoAgent", "No host name given") :
QCoreApplication::translate("QHostInfoAgent", "Invalid hostname"));
return results;
}
// Call RHostResolver::GetByAddress, and place all IPv4 addresses at the start and
// the IPv6 addresses at the end of the address list in results.
// Synchronous request.
err = hostResolver.GetByName(qt_QString2TPtrC(QString::fromLatin1(aceHostname)), nameResult);
if (err) {
setError_helper(results, err);
return results;
}
QList<QHostAddress> hostAddresses;
TInetAddr hostAdd = nameResult().iAddr;
if (!(nameResult().iFlags & TNameRecord::EAlias) && !(hostAdd.IsUnspecified()))
hostAddresses.append(qt_QHostAddressFromTInetAddr(hostAdd));
// Check if there's more than one IP address linkd to this name
while (hostResolver.Next(nameResult) == KErrNone) {
hostAdd = nameResult().iAddr;
// Ensure that record is valid (not an alias and with length greater than 0)
if (!(nameResult().iFlags & TNameRecord::EAlias) && !(hostAdd.IsUnspecified()))
hostAddresses.append(qt_QHostAddressFromTInetAddr(hostAdd));
}
hostResolver.Close();
results.setAddresses(hostAddresses);
return results;
}
QHostInfo QHostInfoAgent::fromName(const QString &hostName)
{
QHostInfo results;
#if defined(QHOSTINFO_DEBUG)
qDebug("QHostInfoAgent::fromName(%s) looking up...",
hostName.toLatin1().constData());
#endif
// Load res_init on demand.
resolveLibrary();
// If res_init is available, poll it.
if (local_res_init)
local_res_init();
QHostAddress address;
if (address.setAddress(hostName)) {
// Reverse lookup
sockaddr_in sa4;
sockaddr_in6 sa6;
sockaddr *sa = 0;
QT_SOCKLEN_T saSize = 0;
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.s6_addr, address.toIPv6Address().c, sizeof(sa6.sin6_addr.s6_addr));
}
char hbuf[NI_MAXHOST];
if (sa && getnameinfo(sa, saSize, hbuf, sizeof(hbuf), 0, 0, 0) == 0)
results.setHostName(QString::fromLatin1(hbuf));
if (results.hostName().isEmpty())
results.setHostName(address.toString());
results.setAddresses(QList<QHostAddress>() << address);
return results;
}
// IDN support
QByteArray aceHostname = QUrl::toAce(hostName);
results.setHostName(hostName);
if (aceHostname.isEmpty()) {
results.setError(QHostInfo::HostNotFound);
results.setErrorString(hostName.isEmpty() ?
QCoreApplication::translate("QHostInfoAgent", "No host name given") :
QCoreApplication::translate("QHostInfoAgent", "Invalid hostname"));
return results;
}
// Call getaddrinfo, and place all IPv4 addresses at the start and
// the IPv6 addresses at the end of the address list in results.
addrinfo *res = 0;
struct addrinfo hints;
memset(&hints, 0, sizeof(hints));
hints.ai_family = PF_UNSPEC;
#ifdef Q_ADDRCONFIG
hints.ai_flags = Q_ADDRCONFIG;
#endif
int result = getaddrinfo(aceHostname.constData(), 0, &hints, &res);
# ifdef Q_ADDRCONFIG
if (result == EAI_BADFLAGS) {
// if the lookup failed with AI_ADDRCONFIG set, try again without it
hints.ai_flags = 0;
result = getaddrinfo(aceHostname.constData(), 0, &hints, &res);
}
# endif
if (result == 0) {
addrinfo *node = res;
QList<QHostAddress> addresses;
while (node) {
#ifdef QHOSTINFO_DEBUG
qDebug() << "getaddrinfo node: flags:" << node->ai_flags << "family:" << node->ai_family << "ai_socktype:" << node->ai_socktype << "ai_protocol:" << node->ai_protocol << "ai_addrlen:" << node->ai_addrlen;
#endif
if (node->ai_family == AF_INET) {
QHostAddress addr;
addr.setAddress(ntohl(((sockaddr_in *) node->ai_addr)->sin_addr.s_addr));
if (!addresses.contains(addr))
addresses.append(addr);
}
else if (node->ai_family == AF_INET6) {
QHostAddress addr;
sockaddr_in6 *sa6 = (sockaddr_in6 *) node->ai_addr;
addr.setAddress(sa6->sin6_addr.s6_addr);
if (sa6->sin6_scope_id)
addr.setScopeId(QString::number(sa6->sin6_scope_id));
if (!addresses.contains(addr))
addresses.append(addr);
}
node = node->ai_next;
}
if (addresses.isEmpty() && node == 0) {
// Reached the end of the list, but no addresses were found; this
// means the list contains one or more unknown address types.
results.setError(QHostInfo::UnknownError);
results.setErrorString(tr("Unknown address type"));
}
results.setAddresses(addresses);
freeaddrinfo(res);
} else if (result == EAI_NONAME
|| result == EAI_FAIL
#ifdef EAI_NODATA
// EAI_NODATA is deprecated in RFC 3493
|| result == EAI_NODATA
#endif
) {
results.setError(QHostInfo::HostNotFound);
results.setErrorString(tr("Host not found"));
} else {
results.setError(QHostInfo::UnknownError);
results.setErrorString(QString::fromLocal8Bit(gai_strerror(result)));
}
#if defined(QHOSTINFO_DEBUG)
if (results.error() != QHostInfo::NoError) {
qDebug("QHostInfoAgent::fromName(): error #%d %s",
h_errno, 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::fromName(): found %i entries for \"%s\": {%s}",
addresses.count(), hostName.toLatin1().constData(),
tmp.toLatin1().constData());
}
#endif
return results;
}
QT_BEGIN_NAMESPACE
//#define QHOSTINFO_DEBUG
QHostInfo QHostInfoAgent::fromName(const QString &hostName)
{
QHostInfo results;
QHostAddress address;
if (address.setAddress(hostName)) {
// Reverse lookup
// TODO: is there a replacement for getnameinfo for winrt?
Q_UNIMPLEMENTED();
return results;
}
QByteArray aceHostname = QUrl::toAce(hostName);
results.setHostName(hostName);
if (aceHostname.isEmpty()) {
results.setError(QHostInfo::HostNotFound);
results.setErrorString(hostName.isEmpty() ? tr("No host name given") : tr("Invalid hostname"));
return results;
}
ComPtr<IHostNameFactory> hostnameFactory;
HRESULT hr = RoGetActivationFactory(HString::MakeReference(RuntimeClass_Windows_Networking_HostName).Get(),
IID_PPV_ARGS(&hostnameFactory));
Q_ASSERT_X(SUCCEEDED(hr), Q_FUNC_INFO, qPrintable(qt_error_string(hr)));
ComPtr<IHostName> host;
HStringReference hostNameRef((const wchar_t*)hostName.utf16());
hostnameFactory->CreateHostName(hostNameRef.Get(), &host);
ComPtr<IDatagramSocketStatics> datagramSocketStatics;
GetActivationFactory(HString::MakeReference(RuntimeClass_Windows_Networking_Sockets_DatagramSocket).Get(), &datagramSocketStatics);
ComPtr<IAsyncOperation<IVectorView<EndpointPair *> *>> op;
datagramSocketStatics->GetEndpointPairsAsync(host.Get(),
HString::MakeReference(L"0").Get(),
&op);
ComPtr<IVectorView<EndpointPair *>> endpointPairs;
hr = op->GetResults(&endpointPairs);
int waitCount = 0;
while (hr == E_ILLEGAL_METHOD_CALL) {
WaitForSingleObjectEx(GetCurrentThread(), 50, FALSE);
hr = op->GetResults(&endpointPairs);
if (++waitCount > 1200) // Wait for 1 minute max
return results;
}
if (!endpointPairs)
return results;
unsigned int size;
endpointPairs->get_Size(&size);
QList<QHostAddress> addresses;
for (unsigned int i = 0; i < size; ++i) {
ComPtr<IEndpointPair> endpointpair;
endpointPairs->GetAt(i, &endpointpair);
ComPtr<IHostName> remoteHost;
endpointpair->get_RemoteHostName(&remoteHost);
if (!remoteHost)
continue;
HostNameType type;
remoteHost->get_Type(&type);
if (type == HostNameType_DomainName)
continue;
HString name;
remoteHost->get_CanonicalName(name.GetAddressOf());
UINT32 length;
PCWSTR rawString = name.GetRawBuffer(&length);
QHostAddress addr;
addr.setAddress(QString::fromWCharArray(rawString, length));
if (!addresses.contains(addr))
addresses.append(addr);
}
results.setAddresses(addresses);
return results;
}
void QHostInfoProto::setAddresses(const QList<QHostAddress> & addresses)
{
QHostInfo *item = qscriptvalue_cast<QHostInfo*>(thisObject());
if (item)
item->setAddresses(addresses);
}