/src/mozilla-central/dom/filesystem/FileSystemUtils.cpp
Line | Count | Source (jump to first uncovered line) |
1 | | /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
2 | | /* vim: set ts=8 sts=2 et sw=2 tw=80: */ |
3 | | /* This Source Code Form is subject to the terms of the Mozilla Public |
4 | | * License, v. 2.0. If a copy of the MPL was not distributed with this file, |
5 | | * You can obtain one at http://mozilla.org/MPL/2.0/. */ |
6 | | |
7 | | #include "mozilla/dom/FileSystemUtils.h" |
8 | | |
9 | | namespace mozilla { |
10 | | namespace dom { |
11 | | |
12 | | namespace { |
13 | | |
14 | | bool |
15 | | TokenizerIgnoreNothing(char16_t /* aChar */) |
16 | 0 | { |
17 | 0 | return false; |
18 | 0 | } |
19 | | |
20 | | } // anonymous namespace |
21 | | |
22 | | /* static */ bool |
23 | | FileSystemUtils::IsDescendantPath(const nsAString& aPath, |
24 | | const nsAString& aDescendantPath) |
25 | 0 | { |
26 | 0 | // Check the sub-directory path to see if it has the parent path as prefix. |
27 | 0 | if (!aDescendantPath.Equals(aPath) && |
28 | 0 | !StringBeginsWith(aDescendantPath, aPath)) { |
29 | 0 | return false; |
30 | 0 | } |
31 | 0 | |
32 | 0 | return true; |
33 | 0 | } |
34 | | |
35 | | /* static */ bool |
36 | | FileSystemUtils::IsValidRelativeDOMPath(const nsAString& aPath, |
37 | | nsTArray<nsString>& aParts) |
38 | 0 | { |
39 | 0 | // We don't allow empty relative path to access the root. |
40 | 0 | if (aPath.IsEmpty()) { |
41 | 0 | return false; |
42 | 0 | } |
43 | 0 | |
44 | 0 | // Leading and trailing "/" are not allowed. |
45 | 0 | if (aPath.First() == FILESYSTEM_DOM_PATH_SEPARATOR_CHAR || |
46 | 0 | aPath.Last() == FILESYSTEM_DOM_PATH_SEPARATOR_CHAR) { |
47 | 0 | return false; |
48 | 0 | } |
49 | 0 | |
50 | 0 | NS_NAMED_LITERAL_STRING(kCurrentDir, "."); |
51 | 0 | NS_NAMED_LITERAL_STRING(kParentDir, ".."); |
52 | 0 |
|
53 | 0 | // Split path and check each path component. |
54 | 0 | nsCharSeparatedTokenizerTemplate<TokenizerIgnoreNothing> |
55 | 0 | tokenizer(aPath, FILESYSTEM_DOM_PATH_SEPARATOR_CHAR); |
56 | 0 |
|
57 | 0 | while (tokenizer.hasMoreTokens()) { |
58 | 0 | nsDependentSubstring pathComponent = tokenizer.nextToken(); |
59 | 0 | // The path containing empty components, such as "foo//bar", is invalid. |
60 | 0 | // We don't allow paths, such as "../foo", "foo/./bar" and "foo/../bar", |
61 | 0 | // to walk up the directory. |
62 | 0 | if (pathComponent.IsEmpty() || |
63 | 0 | pathComponent.Equals(kCurrentDir) || |
64 | 0 | pathComponent.Equals(kParentDir)) { |
65 | 0 | return false; |
66 | 0 | } |
67 | 0 | |
68 | 0 | aParts.AppendElement(pathComponent); |
69 | 0 | } |
70 | 0 |
|
71 | 0 | return true; |
72 | 0 | } |
73 | | |
74 | | /* static */ nsresult |
75 | | FileSystemUtils::DispatchRunnable(nsIGlobalObject* aGlobal, |
76 | | already_AddRefed<nsIRunnable>&& aRunnable) |
77 | 0 | { |
78 | 0 | nsCOMPtr<nsIRunnable> runnable = aRunnable; |
79 | 0 |
|
80 | 0 | nsCOMPtr<nsIEventTarget> target; |
81 | 0 | if (!aGlobal) { |
82 | 0 | target = SystemGroup::EventTargetFor(TaskCategory::Other); |
83 | 0 | } else { |
84 | 0 | target = aGlobal->EventTargetFor(TaskCategory::Other); |
85 | 0 | } |
86 | 0 |
|
87 | 0 | MOZ_ASSERT(target); |
88 | 0 |
|
89 | 0 | nsresult rv = target->Dispatch(runnable.forget(), NS_DISPATCH_NORMAL); |
90 | 0 | if (NS_WARN_IF(NS_FAILED(rv))) { |
91 | 0 | return rv; |
92 | 0 | } |
93 | 0 | |
94 | 0 | return NS_OK; |
95 | 0 | } |
96 | | |
97 | | } // namespace dom |
98 | | } // namespace mozilla |