kwin: make use of QHostInfo::localHostName()

Signed-off-by: Ivailo Monev <xakepa10@laimg.moc>

kwin/client_machine.cpp

@@ -24,147 +24,14 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 // KDE
 #include <KDebug>
 // Qt
-#include <QtConcurrentRun>
-#include <QFutureWatcher>
-// system
-#include <unistd.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <netdb.h>
+#include <QHostInfo>
 
 namespace KWin {
 
-static QByteArray getHostName()
-{
-#ifdef HOST_NAME_MAX
-    char hostnamebuf[HOST_NAME_MAX];
-#else
-    char hostnamebuf[256];
-#endif
-    if (gethostname(hostnamebuf, sizeof hostnamebuf) >= 0) {
-        hostnamebuf[sizeof(hostnamebuf)-1] = 0;
-        return QByteArray(hostnamebuf);
-    }
-    return QByteArray();
-}
-
-GetAddrInfo::GetAddrInfo(const QByteArray &hostName, QObject *parent)
-    : QObject(parent)
-    , m_resolving(false)
-    , m_resolved(false)
-    , m_ownResolved(false)
-    , m_hostName(hostName)
-    , m_addressHints(new addrinfo)
-    , m_address(NULL)
-    , m_ownAddress(NULL)
-    , m_watcher(new QFutureWatcher<int>(this))
-    , m_ownAddressWatcher(new QFutureWatcher<int>(this))
-{
-    // watcher will be deleted together with the GetAddrInfo once the future
-    // got canceled or finished
-    connect(m_watcher, SIGNAL(canceled()), SLOT(deleteLater()));
-    connect(m_watcher, SIGNAL(finished()), SLOT(slotResolved()));
-    connect(m_ownAddressWatcher, SIGNAL(canceled()), SLOT(deleteLater()));
-    connect(m_ownAddressWatcher, SIGNAL(finished()), SLOT(slotOwnAddressResolved()));
-}
-
-GetAddrInfo::~GetAddrInfo()
-{
-    if (m_watcher && m_watcher->isRunning()) {
-        m_watcher->cancel();
-    }
-    if (m_ownAddressWatcher && m_ownAddressWatcher->isRunning()) {
-        m_ownAddressWatcher->cancel();
-    }
-    if (m_address) {
-        freeaddrinfo(m_address);
-    }
-    if (m_ownAddress) {
-        freeaddrinfo(m_ownAddress);
-    }
-    delete m_addressHints;
-}
-
-void GetAddrInfo::resolve()
-{
-    if (m_resolving) {
-        return;
-    }
-    m_resolving = true;
-    memset(m_addressHints, 0, sizeof(*m_addressHints));
-    m_addressHints->ai_family = PF_UNSPEC;
-    m_addressHints->ai_socktype = SOCK_STREAM;
-    m_addressHints->ai_flags |= AI_CANONNAME;
-
-    // TODO: C++11 nullptr
-    const char* nullPtr = NULL;
-    m_watcher->setFuture(QtConcurrent::run(getaddrinfo, m_hostName, nullPtr, m_addressHints, &m_address));
-    m_ownAddressWatcher->setFuture(QtConcurrent::run(getaddrinfo, getHostName(), nullPtr, m_addressHints, &m_ownAddress));
-}
-
-void GetAddrInfo::slotResolved()
-{
-    if (resolved(m_watcher)) {
-        m_resolved = true;
-        compare();
-    }
-}
-
-void GetAddrInfo::slotOwnAddressResolved()
-{
-    if (resolved(m_ownAddressWatcher)) {
-        m_ownResolved = true;
-        compare();
-    }
-}
-
-bool GetAddrInfo::resolved(QFutureWatcher< int >* watcher)
-{
-    if (!watcher->isFinished()) {
-        return false;
-    }
-    if (watcher->result() != 0) {
-        kDebug(1212) << "getaddrinfo failed with error:" << gai_strerror(watcher->result());
-        // call failed;
-        deleteLater();
-        return false;
-    }
-    return true;
-}
-
-void GetAddrInfo::compare()
-{
-    if (!m_resolved || !m_ownResolved) {
-        return;
-    }
-    addrinfo *address = m_address;
-    while (address) {
-        if (address->ai_canonname && m_hostName == QByteArray(address->ai_canonname).toLower()) {
-            addrinfo *ownAddress = m_ownAddress;
-            bool localFound = false;
-            while (ownAddress) {
-                if (ownAddress->ai_canonname  && QByteArray(ownAddress->ai_canonname).toLower() == m_hostName) {
-                    localFound = true;
-                    break;
-                }
-                ownAddress = ownAddress->ai_next;
-            }
-            if (localFound) {
-                emit local();
-                break;
-            }
-        }
-        address = address->ai_next;
-    }
-    deleteLater();
-}
-
-
 ClientMachine::ClientMachine(QObject *parent)
     : QObject(parent)
     , m_localhost(false)
     , m_resolved(false)
-    , m_resolving(false)
 {
 }
 
@@ -198,7 +65,7 @@ void ClientMachine::checkForLocalhost()
         // nothing to do
         return;
     }
-    QByteArray host = getHostName();
+    QByteArray host = QHostInfo::localHostName().toAscii();
 
     if (!host.isEmpty()) {
         host = host.toLower();
@@ -211,16 +78,7 @@ void ClientMachine::checkForLocalhost()
             *dot = '\0';
             if (host == lowerHostName) {
                 setLocal();
-                return;
             }
-        } else {
-            m_resolving = true;
-            // check using information from get addr info
-            // GetAddrInfo gets automatically destroyed once it finished or not
-            GetAddrInfo *info = new GetAddrInfo(lowerHostName, this);
-            connect(info, SIGNAL(local()), SLOT(setLocal()));
-            connect(info, SIGNAL(destroyed(QObject*)), SLOT(resolveFinished()));
-            info->resolve();
         }
     }
 }
@@ -231,9 +89,4 @@ void ClientMachine::setLocal()
     emit localhostChanged();
 }
 
-void ClientMachine::resolveFinished()
-{
-    m_resolving = false;
-}
-
 } // namespace

kwin/client_machine.h

@@ -23,42 +23,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include <QObject>
 #include <xcb/xcb.h>
 
-// forward declaration
-struct addrinfo;
-#include <QFutureWatcher>
-
 namespace KWin {
 
-class GetAddrInfo : public QObject
-{
-    Q_OBJECT
-public:
-    explicit GetAddrInfo(const QByteArray &hostName, QObject *parent = NULL);
-    virtual ~GetAddrInfo();
-
-    void resolve();
-
-Q_SIGNALS:
-    void local();
-
-private Q_SLOTS:
-    void slotResolved();
-    void slotOwnAddressResolved();
-
-private:
-    void compare();
-    bool resolved(QFutureWatcher<int> *watcher);
-    bool m_resolving;
-    bool m_resolved;
-    bool m_ownResolved;
-    QByteArray m_hostName;
-    addrinfo *m_addressHints;
-    addrinfo *m_address;
-    addrinfo *m_ownAddress;
-    QFutureWatcher<int> *m_watcher;
-    QFutureWatcher<int> *m_ownAddressWatcher;
-};
-
 class ClientMachine : public QObject
 {
     Q_OBJECT
@@ -70,21 +36,18 @@ public:
     const QByteArray &hostName() const;
     bool isLocal() const;
     static QByteArray localhost();
-    bool isResolving() const;
 
 Q_SIGNALS:
     void localhostChanged();
 
 private Q_SLOTS:
     void setLocal();
-    void resolveFinished();
 
 private:
     void checkForLocalhost();
     QByteArray m_hostName;
     bool m_localhost;
     bool m_resolved;
-    bool m_resolving;
 };
 
 inline
@@ -105,12 +68,6 @@ QByteArray ClientMachine::localhost()
     return "localhost";
 }
 
-inline
-bool ClientMachine::isResolving() const
-{
-    return m_resolving;
-}
-
 } // namespace
 
 #endif

kwin/tests/test_client_machine.cpp

@@ -129,12 +129,6 @@ void TestClientMachine::hostName()
     clientMachine.resolve(window, XCB_WINDOW_NONE);
     QTEST(clientMachine.hostName(), "expectedHost");
 
-    int i=0;
-    while (clientMachine.isResolving() && i++ < 50) {
-        // name is being resolved in an external thread, so let's wait a little bit
-        QTest::qWait(250);
-    }
-
     QCOMPARE(clientMachine.isLocal(), local);
     QCOMPARE(spy.isEmpty(), !local);
 }