Merge pull request #1340 from p12tic/use-utf8

Use UTF8 internally and convert to UTF16 at the edge.

src/gui/src/CommandProcess.cpp

@@ -30,35 +30,34 @@ CommandProcess::CommandProcess(QString cmd, QStringList arguments, QString input
 QString CommandProcess::run()
 {
     QProcess process;
-    QString standardOutput, standardError;
     process.setReadChannel(QProcess::StandardOutput);
     process.start(m_Command, m_Arguments);
     bool success = process.waitForStarted();
 
+    QString output, error;
     if (success)
     {
         if (!m_Input.isEmpty()) {
-            process.write(m_Input.toLocal8Bit());
+            process.write(m_Input.toStdString().c_str());
         }
 
         if (process.waitForFinished()) {
-            standardOutput = QString::fromLocal8Bit(process.readAllStandardOutput().trimmed());
+            output = process.readAllStandardOutput().trimmed();
-            standardError = QString::fromLocal8Bit(process.readAllStandardError().trimmed());
+            error = process.readAllStandardError().trimmed();
         }
     }
 
     int code = process.exitCode();
-    if (!standardError.isEmpty() || !success || code != 0)
+    if (!error.isEmpty() || !success || code != 0)
     {
         throw std::runtime_error(
-            std::string(
             QString("Code: %1\nError: %2")
                 .arg(process.exitCode())
-                    .arg(standardError.isEmpty() ? "Unknown" : standardError)
+                .arg(error.isEmpty() ? "Unknown" : error)
-                .toLocal8Bit().constData()));
+                .toStdString());
     }
 
     emit finished();
 
-    return standardOutput;
+    return output;
 }

src/gui/src/Fingerprint.cpp

@@ -16,7 +16,8 @@
  */
 
 #include "Fingerprint.h"
-#include "QUtility.h"
+
+#include "common/DataDirectories.h"
 
 #include <QDir>
 #include <QTextStream>
@@ -123,8 +124,10 @@ void Fingerprint::persistDirectory()
 
 QString Fingerprint::directoryPath()
 {
+    auto profileDir = QString::fromStdString(DataDirectories::profile());
+
     return QString("%1/%2")
-      .arg(profilePath())
+      .arg(profileDir)
       .arg(kDirName);
 }
 

src/gui/src/IpcClient.cpp

@@ -104,12 +104,14 @@ void IpcClient::sendCommand(const QString& command, ElevateMode const elevate)
 
     stream.writeRawData(kIpcMsgCommand, 4);
 
-    QByteArray utf8Command = command.toUtf8();
+    std::string stdStringCommand = command.toStdString();
+    const char* charCommand = stdStringCommand.c_str();
+    int length = (int)strlen(charCommand);
 
     char lenBuf[4];
-    intToBytes(utf8Command.size(), lenBuf, 4);
+    intToBytes(length, lenBuf, 4);
     stream.writeRawData(lenBuf, 4);
-    stream.writeRawData(utf8Command.constData(), utf8Command.size());
+    stream.writeRawData(charCommand, length);
 
     char elevateBuf[1];
     // Refer to enum ElevateMode documentation for why this flag is mapped this way

src/gui/src/MainWindow.cpp

@@ -31,6 +31,7 @@
 #include "ProcessorArch.h"
 #include "SslCertificate.h"
 #include "ShutdownCh.h"
+#include "common/DataDirectories.h"
 
 #include <QtCore>
 #include <QtGui>
@@ -524,7 +525,7 @@ void MainWindow::startBarrier()
     // launched the process (e.g. when launched with elevation). setting the
     // profile dir on launch ensures it uses the same profile dir is used
     // no matter how its relaunched.
-    args << "--profile-dir" << QString("\"%1\"").arg(profilePath());
+    args << "--profile-dir" << QString::fromStdString("\"" + DataDirectories::profile() + "\"");
 #endif
 
     if ((barrierType() == barrierClient && !clientArgs(args, app))

src/gui/src/QUtility.cpp

@@ -19,7 +19,6 @@
 
 #include "ProcessorArch.h"
 #include "CommandProcess.h"
-#include "common/DataDirectories.h"
 
 #if defined(Q_OS_LINUX)
 #include <QProcess>
@@ -113,11 +112,3 @@ QString getOSInformation()
 
     return result;
 }
-
-QString profilePath()
-{
-    // Get path to current profile directory, properly converted
-    // from an OS locale std::string to Unicode QString.
-    auto localePath = DataDirectories::profile();
-    return QString::fromLocal8Bit(localePath.c_str(), localePath.size());
-}

src/gui/src/QUtility.h

@@ -29,4 +29,3 @@ QString hash(const QString& string);
 QString getFirstMacAddress();
 qProcessorArch getProcessorArch();
 QString getOSInformation();
-QString profilePath();

src/gui/src/SslCertificate.cpp

@@ -17,7 +17,7 @@
 
 #include "SslCertificate.h"
 #include "Fingerprint.h"
-#include "QUtility.h"
+#include "common/DataDirectories.h"
 
 #include <QProcess>
 #include <QDir>
@@ -43,13 +43,13 @@ static const char kConfigFile[] = "barrier.conf";
 SslCertificate::SslCertificate(QObject *parent) :
     QObject(parent)
 {
-    m_ProfileDir = profilePath();
+    m_ProfileDir = DataDirectories::profile();
-    if (m_ProfileDir.isEmpty()) {
+    if (m_ProfileDir.empty()) {
         emit error(tr("Failed to get profile directory."));
     }
 }
 
-std::pair<bool, QString> SslCertificate::runTool(const QStringList& args)
+std::pair<bool, std::string> SslCertificate::runTool(const QStringList& args)
 {
     QString program;
 #if defined(Q_OS_WIN)
@@ -68,15 +68,17 @@ std::pair<bool, QString> SslCertificate::runTool(const QStringList& args)
 #endif
 
     QProcess process;
-    QString standardOutput, standardError;
     process.setEnvironment(environment);
     process.start(program, args);
-    bool success = process.waitForStarted();
 
+    bool success = process.waitForStarted();
+    std::string output;
+
+    QString standardError;
     if (success && process.waitForFinished())
     {
-        standardOutput = QString::fromLocal8Bit(process.readAllStandardOutput().trimmed());
+        output = process.readAllStandardOutput().trimmed().toStdString();
-        standardError = QString::fromLocal8Bit(process.readAllStandardError().trimmed());
+        standardError = process.readAllStandardError().trimmed();
     }
 
     int code = process.exitCode();
@@ -87,15 +89,15 @@ std::pair<bool, QString> SslCertificate::runTool(const QStringList& args)
                 .arg(program)
                 .arg(process.exitCode())
                 .arg(standardError.isEmpty() ? "Unknown" : standardError));
-        return {false, standardOutput};
+        return {false, output};
     }
 
-    return {true, standardOutput};
+    return {true, output};
 }
 
 void SslCertificate::generateCertificate()
 {
-    auto filename = getCertificatePath();
+    auto filename = QString::fromStdString(getCertificatePath());
 
     QFile file(filename);
     if (!file.exists() || !isCertificateValid(filename)) {
@@ -120,7 +122,7 @@ void SslCertificate::generateCertificate()
         arguments.append("-newkey");
         arguments.append("rsa:2048");
 
-        QDir sslDir(getCertificateDirectory());
+        QDir sslDir(QString::fromStdString(getCertificateDirectory()));
         if (!sslDir.exists()) {
             sslDir.mkpath(".");
         }
@@ -157,17 +159,20 @@ void SslCertificate::generateFingerprint(const QString& certificateFilename)
 
     auto ret = runTool(arguments);
     bool success = ret.first;
+    std::string output = ret.second;
+
     if (!success) {
         return;
     }
 
     // find the fingerprint from the tool output
-    QString fingerprint = ret.second;
+    auto i = output.find_first_of('=');
-    auto i = fingerprint.indexOf('=');
+    if (i != std::string::npos) {
-    if (i != -1) {
+        i++;
-        fingerprint.remove(0, i+1);
+        auto fingerprint = output.substr(
+            i, output.size() - i);
 
-        Fingerprint::local().trust(fingerprint, false);
+        Fingerprint::local().trust(QString::fromStdString(fingerprint), false);
         emit info(tr("SSL fingerprint generated."));
     }
     else {
@@ -175,14 +180,14 @@ void SslCertificate::generateFingerprint(const QString& certificateFilename)
     }
 }
 
-QString SslCertificate::getCertificatePath()
+std::string SslCertificate::getCertificatePath()
 {
-    return getCertificateDirectory() + QDir::separator() + kCertificateFilename;
+    return getCertificateDirectory() + QDir::separator().toLatin1() + kCertificateFilename;
 }
 
-QString SslCertificate::getCertificateDirectory()
+std::string SslCertificate::getCertificateDirectory()
 {
-    return m_ProfileDir + QDir::separator() + kSslDir;
+    return m_ProfileDir + QDir::separator().toLatin1() + kSslDir;
 }
 
 bool SslCertificate::isCertificateValid(const QString& path)
@@ -193,7 +198,7 @@ bool SslCertificate::isCertificateValid(const QString& path)
 
     BIO* bio = BIO_new(BIO_s_file());
 
-    auto ret = BIO_read_filename(bio, path.toLocal8Bit().constData());
+    auto ret = BIO_read_filename(bio, path.toStdString().c_str());
     if (!ret) {
         emit info(tr("Could not read from default certificate file."));
         BIO_free_all(bio);

src/gui/src/SslCertificate.h

@@ -36,13 +36,13 @@ signals:
     void generateFinished();
 
 private:
-    std::pair<bool, QString> runTool(const QStringList& args);
+    std::pair<bool, std::string> runTool(const QStringList& args);
     void generateFingerprint(const QString& certificateFilename);
 
-    QString getCertificatePath();
+    std::string getCertificatePath();
-    QString getCertificateDirectory();
+    std::string getCertificateDirectory();
 
     bool isCertificateValid(const QString& path);
 private:
-    QString m_ProfileDir;
+    std::string m_ProfileDir;
 };

src/lib/barrier/DropHelper.cpp

@@ -18,6 +18,7 @@
 #include "barrier/DropHelper.h"
 
 #include "base/Log.h"
+#include "io/fstream.h"
 
 #include <fstream>
 
@@ -35,7 +36,7 @@ DropHelper::writeToDir(const String& destination, DragFileList& fileList, String
         dropTarget.append("/");
 #endif
         dropTarget.append(fileList.at(0).getFilename());
-        file.open(dropTarget.c_str(), std::ios::out | std::ios::binary);
+        barrier::open_utf8_path(file, dropTarget, std::ios::out | std::ios::binary);
         if (!file.is_open()) {
             LOG((CLOG_ERR "drop file failed: can not open %s", dropTarget.c_str()));
         }

src/lib/barrier/win32/DaemonApp.cpp

@@ -34,7 +34,6 @@
 #include "base/log_outputters.h"
 #include "base/Log.h"
 #include "common/DataDirectories.h"
-#include "base/Unicode.h"
 
 #include "arch/win32/ArchMiscWindows.h"
 #include "arch/win32/XArchWindows.h"
@@ -258,7 +257,7 @@ DaemonApp::handleIpcMessage(const Event& e, void*)
     switch (m->type()) {
         case kIpcCommand: {
             IpcCommandMessage* cm = static_cast<IpcCommandMessage*>(m);
-            String command = Unicode::UTF8ToText(cm->command());
+            String command = cm->command();
 
             // if empty quotes, clear.
             if (command == "\"\"") {

src/lib/base/log_outputters.cpp

@@ -20,7 +20,7 @@
 #include "base/TMethodJob.h"
 #include "arch/Arch.h"
 #include "base/String.h"
-
+#include "io/fstream.h"
 #include <fstream>
 
 enum EFileLogOutputter {
@@ -260,7 +260,7 @@ FileLogOutputter::write(ELevel level, const char *message)
     bool moveFile = false;
 
     std::ofstream m_handle;
-    m_handle.open(m_fileName.c_str(), std::fstream::app);
+    barrier::open_utf8_path(m_handle, m_fileName, std::fstream::app);
     if (m_handle.is_open() && m_handle.fail() != true) {
         m_handle << message << std::endl;
 

src/lib/common/win32/DataDirectories.cpp

@@ -16,12 +16,26 @@
 */
 
 #include "../DataDirectories.h"
-#include "KnownFolderPaths.h"
+#include "encoding_utilities.h"
+
+#include <Shlobj.h>
+
+std::string known_folder_path(const KNOWNFOLDERID& id)
+{
+    std::string path;
+    WCHAR* buffer;
+    HRESULT result = SHGetKnownFolderPath(id, 0, NULL, &buffer);
+    if (result == S_OK) {
+        path = win_wchar_to_utf8(buffer);
+        CoTaskMemFree(buffer);
+    }
+    return path;
+}
 
 const std::string& DataDirectories::profile()
 {
     if (_profile.empty())
-        _profile = localAppDataPath() + "\\Barrier";
+        _profile = known_folder_path(FOLDERID_LocalAppData) + "\\Barrier";
     return _profile;
 }
 const std::string& DataDirectories::profile(const std::string& path)
@@ -33,7 +47,7 @@ const std::string& DataDirectories::profile(const std::string& path)
 const std::string& DataDirectories::global()
 {
     if (_global.empty())
-        _global = programDataPath() + "\\Barrier";
+        _global = known_folder_path(FOLDERID_ProgramData) + "\\Barrier";
     return _global;
 }
 const std::string& DataDirectories::global(const std::string& path)

src/lib/common/win32/KnownFolderPaths.cpp

@@ -1,63 +0,0 @@
-/*
-* barrier -- mouse and keyboard sharing utility
-* Copyright (C) 2018 Debauchee Open Source Group
-*
-* This package is free software; you can redistribute it and/or
-* modify it under the terms of the GNU General Public License
-* found in the file LICENSE that should have accompanied this file.
-*
-* This package is distributed in the hope that it will be useful,
-* but WITHOUT ANY WARRANTY; without even the implied warranty of
-* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-* GNU General Public License for more details.
-*
-* You should have received a copy of the GNU General Public License
-* along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-#include "KnownFolderPaths.h"
-
-#define WIN32_LEAN_AND_MEAN
-#include <Windows.h>
-#include <Shlobj.h>
-
-static std::string wide_to_mb(const wchar_t* source, int length)
-{
-    int ansiLength = WideCharToMultiByte(CP_ACP, 0, source, length, NULL, 0, NULL, NULL);
-    if (ansiLength > 0) {
-        std::string ansiString(ansiLength, 0);
-        ansiLength = WideCharToMultiByte(CP_ACP, 0, source, length, &ansiString[0], ansiLength, NULL, NULL);
-        if (ansiLength > 0) {
-            return ansiString;
-        }
-    }
-    return {};
-}
-
-static std::string known_folder_path(const KNOWNFOLDERID& id)
-{
-    std::string path;
-    WCHAR* buffer;
-    HRESULT result = SHGetKnownFolderPath(id, 0, NULL, &buffer);
-    if (result == S_OK) {
-        auto length = lstrlenW(buffer);
-        path = wide_to_mb(buffer, length);
-        CoTaskMemFree(buffer);
-    }
-    return path;
-}
-
-std::string desktopPath()
-{
-    return known_folder_path(FOLDERID_Desktop);
-}
-
-std::string localAppDataPath()
-{
-    return known_folder_path(FOLDERID_LocalAppData);
-}
-
-std::string programDataPath()
-{
-    return known_folder_path(FOLDERID_ProgramData);
-}

src/lib/common/win32/KnownFolderPaths.h

@@ -1,24 +0,0 @@
-/*
-* barrier -- mouse and keyboard sharing utility
-* Copyright (C) 2018 Debauchee Open Source Group
-*
-* This package is free software; you can redistribute it and/or
-* modify it under the terms of the GNU General Public License
-* found in the file LICENSE that should have accompanied this file.
-*
-* This package is distributed in the hope that it will be useful,
-* but WITHOUT ANY WARRANTY; without even the implied warranty of
-* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-* GNU General Public License for more details.
-*
-* You should have received a copy of the GNU General Public License
-* along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-#pragma once
-
-#include <string>
-
-std::string desktopPath();
-std::string localAppDataPath();
-std::string programDataPath();

src/lib/common/win32/encoding_utilities.cpp

@@ -0,0 +1,37 @@
+/*
+    barrier -- mouse and keyboard sharing utility
+    Copyright (C) Barrier contributors
+
+    This package is free software; you can redistribute it and/or
+    modify it under the terms of the GNU General Public License
+    found in the file LICENSE that should have accompanied this file.
+
+    This package is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "encoding_utilities.h"
+#include <stringapiset.h>
+
+std::string win_wchar_to_utf8(const WCHAR* utfStr)
+{
+    int utfLength = lstrlenW(utfStr);
+    int mbLength = WideCharToMultiByte(CP_UTF8, 0, utfStr, utfLength, NULL, 0, NULL, NULL);
+    std::string mbStr(mbLength, 0);
+    WideCharToMultiByte(CP_UTF8, 0, utfStr, utfLength, &mbStr[0], mbLength, NULL, NULL);
+    return mbStr;
+}
+
+std::vector<WCHAR> utf8_to_win_char(const std::string& str)
+{
+    int result_len = MultiByteToWideChar(CP_UTF8, 0, str.data(), str.size(), NULL, 0);
+    std::vector<WCHAR> result;
+    result.resize(result_len + 1, 0);
+    MultiByteToWideChar(CP_UTF8, 0, str.data(), str.size(), result.data(), result_len);
+    return result;
+}

src/lib/common/win32/encoding_utilities.h

@@ -0,0 +1,28 @@
+/*
+    barrier -- mouse and keyboard sharing utility
+    Copyright (C) Barrier contributors
+
+    This package is free software; you can redistribute it and/or
+    modify it under the terms of the GNU General Public License
+    found in the file LICENSE that should have accompanied this file.
+
+    This package is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef BARRIER_LIB_COMMON_WIN32_ENCODING_UTILITIES_H
+#define BARRIER_LIB_COMMON_WIN32_ENCODING_UTILITIES_H
+
+#include <windows.h>
+#include <string>
+#include <vector>
+
+std::string win_wchar_to_utf8(const WCHAR* utfStr);
+std::vector<WCHAR> utf8_to_win_char(const std::string& str);
+
+#endif

src/lib/io/fstream.cpp

@@ -0,0 +1,57 @@
+/*
+    barrier -- mouse and keyboard sharing utility
+    Copyright (C) Barrier contributors
+
+    This package is free software; you can redistribute it and/or
+    modify it under the terms of the GNU General Public License
+    found in the file LICENSE that should have accompanied this file.
+
+    This package is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "fstream.h"
+#if SYSAPI_WIN32
+#include "common/win32/encoding_utilities.h"
+#endif
+#include <fstream>
+
+namespace barrier {
+
+namespace {
+
+template<class Stream>
+void open_utf8_path_impl(Stream& stream, const std::string& path, std::ios_base::openmode mode)
+{
+#if SYSAPI_WIN32
+    // on Windows we need to use a private constructor from wchar_t* string.
+    auto wchar_path = utf8_to_win_char(path);
+    stream.open(wchar_path.data(), mode);
+#else
+    stream.open(path.c_str(), mode);
+#endif
+}
+
+} // namespace
+
+void open_utf8_path(std::ifstream& stream, const std::string& path, std::ios_base::openmode mode)
+{
+    open_utf8_path_impl(stream, path, mode);
+}
+
+void open_utf8_path(std::ofstream& stream, const std::string& path, std::ios_base::openmode mode)
+{
+    open_utf8_path_impl(stream, path, mode);
+}
+
+void open_utf8_path(std::fstream& stream, const std::string& path, std::ios_base::openmode mode)
+{
+    open_utf8_path_impl(stream, path, mode);
+}
+
+} // namespace barrier

src/lib/io/fstream.h

@@ -0,0 +1,35 @@
+/*
+    barrier -- mouse and keyboard sharing utility
+    Copyright (C) Barrier contributors
+
+    This package is free software; you can redistribute it and/or
+    modify it under the terms of the GNU General Public License
+    found in the file LICENSE that should have accompanied this file.
+
+    This package is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef BARRIER_LIB_IO_FSTREAM_H
+#define BARRIER_LIB_IO_FSTREAM_H
+
+#include <iosfwd>
+#include <ios>
+
+namespace barrier {
+
+void open_utf8_path(std::ifstream& stream, const std::string& path,
+                    std::ios_base::openmode mode = std::ios_base::in);
+void open_utf8_path(std::ofstream& stream, const std::string& path,
+                    std::ios_base::openmode mode = std::ios_base::out);
+void open_utf8_path(std::fstream& stream, const std::string& path,
+                    std::ios_base::openmode mode = std::ios_base::in | std::ios_base::out);
+
+} // namespace barrier
+
+#endif

src/lib/ipc/IpcLogOutputter.cpp

@@ -29,7 +29,6 @@
 #include "base/EventQueue.h"
 #include "base/TMethodEventJob.h"
 #include "base/TMethodJob.h"
-#include "base/Unicode.h"
 
 enum EIpcLogOutputter {
     kBufferMaxSize = 1000,
@@ -197,7 +196,7 @@ IpcLogOutputter::sendBuffer()
         return;
     }
 
-    IpcLogLineMessage message(Unicode::textToUTF8(getChunk(kMaxSendLines)));
+    IpcLogLineMessage message(getChunk(kMaxSendLines));
     m_sending = true;
     m_ipcServer.send(message, kIpcClientGui);
     m_sending = false;

src/lib/net/SecureSocket.cpp

@@ -25,6 +25,7 @@
 #include "base/Log.h"
 #include "base/String.h"
 #include "common/DataDirectories.h"
+#include "io/fstream.h"
 
 #include <openssl/ssl.h>
 #include <openssl/err.h>
@@ -708,7 +709,7 @@ SecureSocket::verifyCertFingerprint()
     // check if this fingerprint exist
     std::string fileLine;
     std::ifstream file;
-    file.open(trustedServersFilename.c_str());
+    barrier::open_utf8_path(file, trustedServersFilename);
 
     if (!file.is_open()) {
         LOG((CLOG_NOTE "Unable to open trustedServersFile: %s", trustedServersFilename.c_str() ));

src/lib/platform/MSWindowsScreen.cpp

@@ -41,9 +41,9 @@
 #include "base/IEventQueue.h"
 #include "base/TMethodEventJob.h"
 #include "base/TMethodJob.h"
-#include "common/win32/KnownFolderPaths.h"
 
 #include <string.h>
+#include <Shlobj.h>
 #include <comutil.h>
 #include <algorithm>
 
@@ -1916,12 +1916,14 @@ const std::string&
 MSWindowsScreen::getDropTarget() const
 {
     if (m_dropTargetPath.empty()) {
-        m_dropTargetPath = desktopPath();
+        // SHGetFolderPath is deprecated in vista, but use it for xp support.
-        if (!m_dropTargetPath.empty()) {
+        char desktopPath[MAX_PATH];
-            LOG((CLOG_DEBUG "using desktop for drop target: %s", m_dropTargetPath.c_str()));
+        if (SUCCEEDED(SHGetFolderPath(NULL, CSIDL_DESKTOP, NULL, 0, desktopPath))) {
+            m_dropTargetPath = std::string(desktopPath);
+            LOG((CLOG_INFO "using desktop for drop target: %s", m_dropTargetPath.c_str()));
         }
         else {
-            LOG((CLOG_ERR "failed to get desktop path, no drop target available"));
+            LOG((CLOG_ERR "failed to get desktop path, no drop target available, error=%d", GetLastError()));
         }
     }
     return m_dropTargetPath;