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-rw-r--r--xpcom/tests/windows/TestNtPathToDosPath.cpp193
1 files changed, 193 insertions, 0 deletions
diff --git a/xpcom/tests/windows/TestNtPathToDosPath.cpp b/xpcom/tests/windows/TestNtPathToDosPath.cpp
new file mode 100644
index 000000000..b826d4f20
--- /dev/null
+++ b/xpcom/tests/windows/TestNtPathToDosPath.cpp
@@ -0,0 +1,193 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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 <windows.h>
+#include <winnetwk.h>
+
+#include "mozilla/FileUtilsWin.h"
+#include "mozilla/DebugOnly.h"
+#include "nsCRTGlue.h"
+
+#include "gtest/gtest.h"
+
+class DriveMapping
+{
+public:
+ DriveMapping(const nsAString& aRemoteUNCPath);
+ ~DriveMapping();
+
+ bool
+ Init();
+ bool
+ ChangeDriveLetter();
+ wchar_t
+ GetDriveLetter() { return mDriveLetter; }
+
+private:
+ bool
+ DoMapping();
+ void
+ Disconnect(wchar_t aDriveLetter);
+
+ wchar_t mDriveLetter;
+ nsString mRemoteUNCPath;
+};
+
+DriveMapping::DriveMapping(const nsAString& aRemoteUNCPath)
+ : mDriveLetter(0)
+ , mRemoteUNCPath(aRemoteUNCPath)
+{
+}
+
+bool
+DriveMapping::Init()
+{
+ if (mDriveLetter) {
+ return false;
+ }
+ return DoMapping();
+}
+
+bool
+DriveMapping::DoMapping()
+{
+ wchar_t drvTemplate[] = L" :";
+ NETRESOURCEW netRes = {0};
+ netRes.dwType = RESOURCETYPE_DISK;
+ netRes.lpLocalName = drvTemplate;
+ netRes.lpRemoteName = reinterpret_cast<wchar_t*>(mRemoteUNCPath.BeginWriting());
+ wchar_t driveLetter = L'D';
+ DWORD result = NO_ERROR;
+ do {
+ drvTemplate[0] = driveLetter;
+ result = WNetAddConnection2W(&netRes, nullptr, nullptr, CONNECT_TEMPORARY);
+ } while (result == ERROR_ALREADY_ASSIGNED && ++driveLetter <= L'Z');
+ if (result != NO_ERROR) {
+ return false;
+ }
+ mDriveLetter = driveLetter;
+ return true;
+}
+
+bool
+DriveMapping::ChangeDriveLetter()
+{
+ wchar_t prevDriveLetter = mDriveLetter;
+ bool result = DoMapping();
+ MOZ_RELEASE_ASSERT(mDriveLetter != prevDriveLetter);
+ if (result && prevDriveLetter) {
+ Disconnect(prevDriveLetter);
+ }
+ return result;
+}
+
+void
+DriveMapping::Disconnect(wchar_t aDriveLetter)
+{
+ wchar_t drvTemplate[] = {aDriveLetter, L':', L'\0'};
+ DWORD result = WNetCancelConnection2W(drvTemplate, 0, TRUE);
+ MOZ_RELEASE_ASSERT(result == NO_ERROR);
+}
+
+DriveMapping::~DriveMapping()
+{
+ if (mDriveLetter) {
+ Disconnect(mDriveLetter);
+ }
+}
+
+bool
+DriveToNtPath(const wchar_t aDriveLetter, nsAString& aNtPath)
+{
+ const wchar_t drvTpl[] = {aDriveLetter, L':', L'\0'};
+ aNtPath.SetLength(MAX_PATH);
+ DWORD pathLen;
+ while (true) {
+ pathLen = QueryDosDeviceW(drvTpl, reinterpret_cast<wchar_t*>(aNtPath.BeginWriting()), aNtPath.Length());
+ if (pathLen || GetLastError() != ERROR_INSUFFICIENT_BUFFER) {
+ break;
+ }
+ aNtPath.SetLength(aNtPath.Length() * 2);
+ }
+ if (!pathLen) {
+ return false;
+ }
+ // aNtPath contains embedded NULLs, so we need to figure out the real length
+ // via wcslen.
+ aNtPath.SetLength(NS_strlen(aNtPath.BeginReading()));
+ return true;
+}
+
+bool
+TestNtPathToDosPath(const wchar_t* aNtPath,
+ const wchar_t* aExpectedDosPath)
+{
+ nsAutoString output;
+ bool result = mozilla::NtPathToDosPath(nsDependentString(aNtPath), output);
+ return result && output == reinterpret_cast<const nsAString::char_type *>(aExpectedDosPath);
+}
+
+TEST(NtPathToDosPath, Tests)
+{
+ nsAutoString cDrive;
+ ASSERT_TRUE(DriveToNtPath(L'C', cDrive));
+
+ // empty string
+ EXPECT_TRUE(TestNtPathToDosPath(L"", L""));
+
+ // non-existent device, must fail
+ EXPECT_FALSE(TestNtPathToDosPath(L"\\Device\\ThisDeviceDoesNotExist\\Foo", nullptr));
+
+ // base case
+ nsAutoString testPath(cDrive);
+ testPath.Append(L"\\Program Files");
+ EXPECT_TRUE(TestNtPathToDosPath(testPath.get(), L"C:\\Program Files"));
+
+ // short filename
+ nsAutoString ntShortName(cDrive);
+ ntShortName.Append(L"\\progra~1");
+ EXPECT_TRUE(TestNtPathToDosPath(ntShortName.get(), L"C:\\Program Files"));
+
+ // drive letters as symbolic links (NtCreateFile uses these)
+ EXPECT_TRUE(TestNtPathToDosPath(L"\\??\\C:\\Foo", L"C:\\Foo"));
+
+ // other symbolic links (should fail)
+ EXPECT_FALSE(TestNtPathToDosPath(L"\\??\\MountPointManager", nullptr));
+
+ // socket (should fail)
+ EXPECT_FALSE(TestNtPathToDosPath(L"\\Device\\Afd\\Endpoint", nullptr));
+
+ // UNC path (using MUP)
+ EXPECT_TRUE(TestNtPathToDosPath(L"\\Device\\Mup\\127.0.0.1\\C$",
+ L"\\\\127.0.0.1\\C$"));
+
+ // UNC path (using LanmanRedirector)
+ EXPECT_TRUE(TestNtPathToDosPath(L"\\Device\\LanmanRedirector\\127.0.0.1\\C$",
+ L"\\\\127.0.0.1\\C$"));
+
+ DriveMapping drvMapping(NS_LITERAL_STRING("\\\\127.0.0.1\\C$"));
+ // Only run these tests if we were able to map; some machines don't have perms
+ if (drvMapping.Init()) {
+ wchar_t expected[] = L" :\\";
+ expected[0] = drvMapping.GetDriveLetter();
+ nsAutoString networkPath;
+ ASSERT_TRUE(DriveToNtPath(drvMapping.GetDriveLetter(), networkPath));
+
+ networkPath += u"\\";
+ EXPECT_TRUE(TestNtPathToDosPath(networkPath.get(), expected));
+
+ // NtPathToDosPath must correctly handle paths whose drive letter mapping has
+ // changed. We need to test this because the APIs called by NtPathToDosPath
+ // return different info if this has happened.
+ ASSERT_TRUE(drvMapping.ChangeDriveLetter());
+
+ expected[0] = drvMapping.GetDriveLetter();
+ ASSERT_TRUE(DriveToNtPath(drvMapping.GetDriveLetter(), networkPath));
+
+ networkPath += u"\\";
+ EXPECT_TRUE(TestNtPathToDosPath(networkPath.get(), expected));
+ }
+}