RemoteLinux: Do not use SftpTransfer in device tester

When the -b switch is used, sftp does not invoke the askpass tool, so
this mode is not suitable for an initial device test. Use SftpSession
instead.

Change-Id: I0ad6e79e821851b6fae2cd11c6194c1956a73d02
Reviewed-by: hjk <hjk@qt.io>

src/plugins/remotelinux/linuxdevicetester.cpp

@@ -31,7 +31,7 @@
 #include <projectexplorer/devicesupport/deviceusedportsgatherer.h>
 #include <utils/port.h>
 #include <utils/qtcassert.h>
-#include <ssh/sftptransfer.h>
+#include <ssh/sftpsession.h>
 #include <ssh/sshremoteprocess.h>
 #include <ssh/sshconnection.h>
 #include <ssh/sshconnectionmanager.h>
@@ -54,7 +54,7 @@ public:
     SshConnection *connection = nullptr;
     SshRemoteProcessPtr process;
     DeviceUsedPortsGatherer portsGatherer;
-    SftpTransferPtr sftpUpload;
+    SftpSessionPtr sftpSession;
     QProcess rsyncProcess;
     State state = Inactive;
     bool sftpWorks = false;
@@ -108,7 +108,7 @@ void GenericLinuxDeviceTester::stopTest()
         d->process->close();
         break;
     case TestingSftp:
-        d->sftpUpload->stop();
+        d->sftpSession->quit();
         break;
     case TestingRsync:
         d->rsyncProcess.disconnect();
@@ -190,25 +190,37 @@ void GenericLinuxDeviceTester::handlePortListReady()
     }
 
     emit progressMessage(tr("Checking whether an SFTP connection can be set up..."));
-    d->sftpUpload = d->connection->createUpload(FilesToTransfer(),
-                                                FileTransferErrorHandling::Abort);
-    connect(d->sftpUpload.get(), &SftpTransfer::done,
+    d->sftpSession = d->connection->createSftpSession();
+    connect(d->sftpSession.get(), &SftpSession::started,
+            this, &GenericLinuxDeviceTester::handleSftpStarted);
+    connect(d->sftpSession.get(), &SftpSession::done,
             this, &GenericLinuxDeviceTester::handleSftpFinished);
     d->state = TestingSftp;
-    d->sftpUpload->start();
+    d->sftpSession->start();
+}
+
+void GenericLinuxDeviceTester::handleSftpStarted()
+{
+    QTC_ASSERT(d->state == TestingSftp, return);
+    emit progressMessage(tr("SFTP service available.\n"));
+    d->sftpWorks = true;
+    disconnect(d->sftpSession.get(), nullptr, this, nullptr);
+    d->sftpSession->quit();
+    testRsync();
 }
 
 void GenericLinuxDeviceTester::handleSftpFinished(const QString &error)
 {
     QTC_ASSERT(d->state == TestingSftp, return);
-    if (!error.isEmpty()) {
-        emit errorMessage(tr("Error setting up SFTP connection: %1\n").arg(error));
+    QString theError;
+    theError = error.isEmpty() ? tr("sftp finished unexpectedly.") : error;
     d->sftpWorks = false;
-    } else {
-        emit progressMessage(tr("SFTP service available.\n"));
-        d->sftpWorks = true;
+    emit errorMessage(tr("Error setting up SFTP connection: %1\n").arg(theError));
+    testRsync();
 }
 
+void GenericLinuxDeviceTester::testRsync()
+{
     emit progressMessage(tr("Checking whether rsync works..."));
     connect(&d->rsyncProcess, &QProcess::errorOccurred, [this] {
         if (d->rsyncProcess.error() == QProcess::FailedToStart)
@@ -255,9 +267,9 @@ void GenericLinuxDeviceTester::setFinished(TestResult result)
 {
     d->state = Inactive;
     disconnect(&d->portsGatherer, nullptr, this, nullptr);
-    if (d->sftpUpload) {
-        disconnect(d->sftpUpload.get(), nullptr, this, nullptr);
-        d->sftpUpload.release()->deleteLater();
+    if (d->sftpSession) {
+        disconnect(d->sftpSession.get(), nullptr, this, nullptr);
+        d->sftpSession.release()->deleteLater();
     }
     if (d->connection) {
         disconnect(d->connection, nullptr, this, nullptr);

src/plugins/remotelinux/linuxdevicetester.h

@@ -50,7 +50,9 @@ private:
     void handleProcessFinished(const QString &error);
     void handlePortsGatheringError(const QString &message);
     void handlePortListReady();
+    void handleSftpStarted();
     void handleSftpFinished(const QString &error);
+    void testRsync();
     void handleRsyncFinished();
     void setFinished(ProjectExplorer::DeviceTester::TestResult result);