add a backport of Qt5's QDnsLookup class

1 files changed, 108 insertions, 0 deletions

diff --git a/src/qdnslookup_symbian.cpp b/src/qdnslookup_symbian.cpp
new file mode 100644
index 00000000..38876783
--- /dev/null
+++ b/src/qdnslookup_symbian.cpp
@@ -0,0 +1,108 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Jeremy Lainé <jeremy.laine@m4x.org>
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the QtNetwork module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** 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 1.1, 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.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qdnslookup_p.h"
+
+#include <QUrl>
+#include <QMutex>
+#include <QLibrary>
+
+#include <dns_qry.h>
+
+QT_BEGIN_NAMESPACE
+
+static void resolveLibrary()
+{
+    QLibrary lib(QLatin1String("dnsapi"));
+    if (!lib.load())
+        return;
+
+    local_dns_query_utf8 = (dns_query_utf8_proto) lib.resolve(QLatin1String("dnsapi"), "DnsQuery_UTF8");
+    local_dns_record_list_free = (dns_record_list_free_proto) lib.resolve(QLatin1String("dnsapi"), "DnsRecordListFree");
+}
+
+void QDnsLookupRunnable::query(const int requestType, const QByteArray &requestName, QDnsLookupReply *reply)
+{
+    RHostResolver dnsResolver;
+    RSocketServ dnsSocket;
+
+    // Initialise resolver.
+    TInt err = dnsSocket.Connect();
+    err = dnsResolver.Open(dnsSocket, KAfInet, KProtocolInetUdp);
+    if (err != KErrNone) {
+        reply->error = QXmppSrvInfo::UnknownError;
+        reply->errorString = QLatin1String("RHostResolver::Open failed");
+        return;
+    }
+
+    // Perform DNS query.
+    TDnsQueryBuf dnsQuery;
+    TDnsRespSRVBuf dnsResponse;
+    dnsQuery().SetClass(KDnsRRClassIN);
+    TPtrC8 queryPtr(reinterpret_cast<const TUint8*>(requestName.constData()), requestNname.size());
+    dnsQuery().SetData(queryPtr);
+    dnsQuery().SetType(KDnsRRTypeSRV);
+    err = dnsResolver.Query(dnsQuery, dnsResponse);
+    if (err != KErrNone) {
+        error = QXmppSrvInfo::NotFoundError;
+        errorString = QLatin1String("RHostResolver::Query failed");
+        return;
+    }
+
+    // Extract results.
+    while (err == KErrNone) {
+        const QByteArray aceName((const char*)dnsResponse().Target().Ptr(),
+                                 dnsResponse().Target().Length());
+
+        QDnsServiceRecord record;
+        record.d->name = name;
+        record.d->target = QUrl::fromAce(aceName);
+        record.d->port = dnsResponse().Port();
+        record.d->priority = dnsResponse().Priority();
+        //record.d->timeToLive = 0;
+        record.d->weight = dnsResponse().Weight();
+        reply->serviceRecords.append(record);
+
+        err = dnsResolver.QueryGetNext(dnsResponse);
+    }
+}
+
+QT_END_NAMESPACE