~Second()
{
order = cleanupOrder.fetchAndAddRelaxed(1);
}
~ThrowingType() { destructedCount.ref(); }
~First()
{
order = cleanupOrder.fetchAndAddRelaxed(1);
}
static void connManager_prepare()
{
int shutdown = appShutdown.fetchAndStoreAcquire(0);
Q_ASSERT(shutdown == 0 || shutdown == 1);
Q_UNUSED(shutdown);
}
ThrowingType(QBasicAtomicInt &throwControl)
{
constructedCount.ref();
if (throwControl.fetchAndAddRelaxed(-1) != 0)
throw 0;
}
int QHostInfo::lookupHost(const QString &name, QObject *receiver, const char *member)
{
#if defined QHOSTINFO_DEBUG
qDebug("QHostInfo::lookupHost(\"%s\", %p, %s)",
name.toLatin1().constData(), receiver, member ? member + 1 : 0);
#endif
if (! QAbstractEventDispatcher::instance(QThread::currentThread())) {
qWarning("QHostInfo::lookupHost() called with no event dispatcher");
return -1;
}
qRegisterMetaType<QHostInfo>("QHostInfo");
// generate unique ID
int id = theIdCounter.fetchAndAddRelaxed(1);
if (name.isEmpty()) {
if (! receiver) {
return -1;
}
QHostInfo hostInfo(id);
hostInfo.setError(QHostInfo::HostNotFound);
hostInfo.setErrorString(QCoreApplication::translate("QHostInfo", "No host name given"));
QScopedPointer<QHostInfoResult> result(new QHostInfoResult);
QObject::connect(result.data(), SIGNAL(resultsReady(const QHostInfo &)), receiver, member, Qt::QueuedConnection);
result.data()->emitResultsReady(hostInfo);
return id;
}
QHostInfoLookupManager *manager = theHostInfoLookupManager();
if (manager) {
// the application is still alive
if (manager->cache.isEnabled()) {
// check cache first
bool valid = false;
QHostInfo info = manager->cache.get(name, &valid);
if (valid) {
if (!receiver)
return -1;
info.setLookupId(id);
QHostInfoResult result;
QObject::connect(&result, SIGNAL(resultsReady(const QHostInfo &)), receiver, member, Qt::QueuedConnection);
result.emitResultsReady(info);
return id;
}
}
// cache is not enabled or it was not in the cache, do normal lookup
QHostInfoRunnable* runnable = new QHostInfoRunnable(name, id);
if (receiver) {
QObject::connect(&runnable->resultEmitter, SIGNAL(resultsReady(const QHostInfo &)), receiver, member, Qt::QueuedConnection);
}
manager->scheduleLookup(runnable);
}
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 QBasicAtomicInt triedResolve = Q_BASIC_ATOMIC_INITIALIZER(false);
if (!triedResolve.loadAcquire()) {
QMutexLocker locker(QMutexPool::globalInstanceGet(&local_res_init));
if (!triedResolve.load()) {
resolveLibrary();
triedResolve.storeRelease(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;
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));
#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);
}
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)));
}
#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;
}
inline SPointer(const SPointer &other) { count.ref(); }
inline ~SPointer() { count.deref(); }
inline SPointer() { count.ref(); }
