1 files changed, 95 insertions, 0 deletions
diff --git a/tools/source/fsys/fileutil.cxx b/tools/source/fsys/fileutil.cxx
new file mode 100644
index 000000000..9470fabd2
--- /dev/null
+++ b/tools/source/fsys/fileutil.cxx
@@ -0,0 +1,95 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#include <tools/fileutil.hxx>
+#if defined _WIN32
+#include <osl/file.hxx>
+#include <o3tl/char16_t2wchar_t.hxx>
+#define WIN32_LEAN_AND_MEAN
+#include <Windows.h>
+#include <davclnt.h>
+#endif
+
+namespace
+{
+#if defined _WIN32
+OUString UNCToDavURL(LPCWSTR sUNC)
+{
+    DWORD nSize = 1024;
+    auto bufURL(std::make_unique<wchar_t[]>(nSize));
+    DWORD nResult = DavGetHTTPFromUNCPath(sUNC, bufURL.get(), &nSize);
+    if (nResult == ERROR_INSUFFICIENT_BUFFER)
+    {
+        bufURL = std::make_unique<wchar_t[]>(nSize);
+        nResult = DavGetHTTPFromUNCPath(sUNC, bufURL.get(), &nSize);
+    }
+    return nResult == ERROR_SUCCESS ? o3tl::toU(bufURL.get()) : OUString();
+}
+#endif
+}
+
+namespace tools
+{
+bool IsMappedWebDAVPath([[maybe_unused]] const OUString& rURL, [[maybe_unused]] OUString* pRealURL)
+{
+#if defined _WIN32
+    if (rURL.startsWithIgnoreAsciiCase("file:"))
+    {
+        OUString aSystemPath;
+        if (osl::FileBase::getSystemPathFromFileURL(rURL, aSystemPath) == osl::FileBase::E_None)
+        {
+            DWORD nSize = MAX_PATH;
+            auto bufUNC(std::make_unique<char[]>(nSize));
+            DWORD nResult = WNetGetUniversalNameW(o3tl::toW(aSystemPath.getStr()),
+                                                  UNIVERSAL_NAME_INFO_LEVEL, bufUNC.get(), &nSize);
+            if (nResult == ERROR_MORE_DATA)
+            {
+                bufUNC = std::make_unique<char[]>(nSize);
+                nResult = WNetGetUniversalNameW(o3tl::toW(aSystemPath.getStr()),
+                                                UNIVERSAL_NAME_INFO_LEVEL, bufUNC.get(), &nSize);
+            }
+            if (nResult == NO_ERROR || nResult == ERROR_BAD_DEVICE)
+            {
+                NETRESOURCEW aReq{};
+                if (nResult == ERROR_BAD_DEVICE) // The path could already be an UNC
+                    aReq.lpRemoteName = const_cast<LPWSTR>(o3tl::toW(aSystemPath.getStr()));
+                else
+                {
+                    auto pInfo = reinterpret_cast<LPUNIVERSAL_NAME_INFOW>(bufUNC.get());
+                    aReq.lpRemoteName = pInfo->lpUniversalName;
+                }
+                nSize = 1024;
+                auto bufInfo(std::make_unique<char[]>(nSize));
+                LPWSTR pSystem = nullptr;
+                nResult = WNetGetResourceInformationW(&aReq, bufInfo.get(), &nSize, &pSystem);
+                if (nResult == ERROR_MORE_DATA)
+                {
+                    bufInfo = std::make_unique<char[]>(nSize);
+                    nResult = WNetGetResourceInformationW(&aReq, bufInfo.get(), &nSize, &pSystem);
+                }
+                if (nResult == NO_ERROR)
+                {
+                    LPNETRESOURCEW pInfo = reinterpret_cast<LPNETRESOURCEW>(bufInfo.get());
+                    if (wcscmp(pInfo->lpProvider, L"Web Client Network") == 0)
+                    {
+                        if (pRealURL)
+                            *pRealURL = UNCToDavURL(aReq.lpRemoteName);
+                        return true;
+                    }
+                }
+            }
+        }
+    }
+#endif
+    return false;
+}
+
+} // namespace tools
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */