[PPAPI] Quarantine files that are writeable by a Pepper plugin.

base/test/test_file_util_win.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/test/test_file_util.h"
 
 #include <aclapi.h>
 #include <shlwapi.h>
 #include <stddef.h>
 #include <wchar.h>
@@ skipping 141 matching lines @@
 
   DWORD rc = SetNamedSecurityInfo(path_ptr.get(), SE_FILE_OBJECT,
                                   DACL_SECURITY_INFORMATION, nullptr, nullptr,
                                   new_dacl, nullptr);
   LocalFree(security_descriptor);
   LocalFree(new_dacl);
 
   return rc == ERROR_SUCCESS;
 }
 
-// Checks if the volume supports Alternate Data Streams. This is required for
-// the Zone Identifier implementation.
-bool VolumeSupportsADS(const FilePath& path) {
-  wchar_t drive[MAX_PATH] = {0};
-  wcscpy_s(drive, MAX_PATH, path.value().c_str());
-
-  if (!PathStripToRootW(drive))
-    return false;
-
-  DWORD fs_flags = 0;
-  if (!GetVolumeInformationW(drive, NULL, 0, 0, NULL, &fs_flags, NULL, 0))
-    return false;
-
-  if (fs_flags & FILE_NAMED_STREAMS)
-    return true;
-
-  return false;
-}
-
-// Return whether the ZoneIdentifier is correctly set to "Internet" (3)
-// Only returns a valid result when called from same process as the
-// one that (was supposed to have) set the zone identifier.
-bool HasInternetZoneIdentifier(const FilePath& full_path) {
-  FilePath zone_path(full_path.value() + L":Zone.Identifier");
-  std::string zone_path_contents;
-  if (!ReadFileToString(zone_path, &zone_path_contents))
-    return false;
-
-  std::vector<std::string> lines = SplitString(
-      zone_path_contents, "\n", TRIM_WHITESPACE, SPLIT_WANT_ALL);
-  switch (lines.size()) {
-    case 3:
-      // optional empty line at end of file:
-      if (!lines[2].empty())
-        return false;
-      // fall through:
-    case 2:
-      return lines[0] == "[ZoneTransfer]" && lines[1] == "ZoneId=3";
-    default:
-      return false;
-  }
-}
-
 bool MakeFileUnreadable(const FilePath& path) {
   return DenyFilePermission(path, GENERIC_READ);
 }
 
 bool MakeFileUnwritable(const FilePath& path) {
   return DenyFilePermission(path, GENERIC_WRITE);
 }
 
 FilePermissionRestorer::FilePermissionRestorer(const FilePath& path)
     : path_(path), info_(NULL), length_(0) {
   info_ = GetPermissionInfo(path_, &length_);
   DCHECK(info_ != NULL);
   DCHECK_NE(0u, length_);
 }
 
 FilePermissionRestorer::~FilePermissionRestorer() {
   if (!RestorePermissionInfo(path_, info_, length_))
     NOTREACHED();
 }
 
 }  // namespace base