зеркало из https://github.com/mozilla/gecko-dev.git
85 строки
2.5 KiB
C++
85 строки
2.5 KiB
C++
/* -*- 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 "mozilla/dom/FileSystemUtils.h"
|
|
#include "nsCharSeparatedTokenizer.h"
|
|
#include "nsIEventTarget.h"
|
|
#include "nsThreadUtils.h"
|
|
|
|
namespace mozilla::dom {
|
|
|
|
/* static */
|
|
bool FileSystemUtils::IsDescendantPath(const nsAString& aPath,
|
|
const nsAString& aDescendantPath) {
|
|
// Check the sub-directory path to see if it has the parent path as prefix.
|
|
if (!aDescendantPath.Equals(aPath) &&
|
|
!StringBeginsWith(aDescendantPath, aPath)) {
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/* static */
|
|
bool FileSystemUtils::IsValidRelativeDOMPath(const nsAString& aPath,
|
|
nsTArray<nsString>& aParts) {
|
|
// We don't allow empty relative path to access the root.
|
|
if (aPath.IsEmpty()) {
|
|
return false;
|
|
}
|
|
|
|
// Leading and trailing "/" are not allowed.
|
|
if (aPath.First() == FILESYSTEM_DOM_PATH_SEPARATOR_CHAR ||
|
|
aPath.Last() == FILESYSTEM_DOM_PATH_SEPARATOR_CHAR) {
|
|
return false;
|
|
}
|
|
|
|
constexpr auto kCurrentDir = u"."_ns;
|
|
constexpr auto kParentDir = u".."_ns;
|
|
|
|
// Split path and check each path component.
|
|
for (const nsAString& pathComponent :
|
|
nsCharSeparatedTokenizerTemplate<NS_TokenizerIgnoreNothing>{
|
|
aPath, FILESYSTEM_DOM_PATH_SEPARATOR_CHAR}
|
|
.ToRange()) {
|
|
// The path containing empty components, such as "foo//bar", is invalid.
|
|
// We don't allow paths, such as "../foo", "foo/./bar" and "foo/../bar",
|
|
// to walk up the directory.
|
|
if (pathComponent.IsEmpty() || pathComponent.Equals(kCurrentDir) ||
|
|
pathComponent.Equals(kParentDir)) {
|
|
return false;
|
|
}
|
|
|
|
aParts.AppendElement(pathComponent);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/* static */
|
|
nsresult FileSystemUtils::DispatchRunnable(
|
|
nsIGlobalObject* aGlobal, already_AddRefed<nsIRunnable>&& aRunnable) {
|
|
nsCOMPtr<nsIRunnable> runnable = aRunnable;
|
|
|
|
nsCOMPtr<nsIEventTarget> target;
|
|
if (!aGlobal) {
|
|
target = GetMainThreadSerialEventTarget();
|
|
} else {
|
|
target = aGlobal->EventTargetFor(TaskCategory::Other);
|
|
}
|
|
|
|
MOZ_ASSERT(target);
|
|
|
|
nsresult rv = target->Dispatch(runnable.forget(), NS_DISPATCH_NORMAL);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
} // namespace mozilla::dom
|