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      1 // Copyright 2013 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "webkit/browser/fileapi/sandbox_file_system_backend_delegate.h"
      6 
      7 #include "base/basictypes.h"
      8 #include "base/file_util.h"
      9 #include "base/files/scoped_temp_dir.h"
     10 #include "base/memory/scoped_ptr.h"
     11 #include "base/message_loop/message_loop.h"
     12 #include "base/message_loop/message_loop_proxy.h"
     13 #include "content/public/test/test_file_system_options.h"
     14 #include "testing/gtest/include/gtest/gtest.h"
     15 #include "url/gurl.h"
     16 #include "webkit/browser/fileapi/file_system_url.h"
     17 
     18 namespace fileapi {
     19 
     20 namespace {
     21 
     22 FileSystemURL CreateFileSystemURL(const char* path) {
     23   const GURL kOrigin("http://foo/");
     24   return FileSystemURL::CreateForTest(
     25       kOrigin, kFileSystemTypeTemporary, base::FilePath::FromUTF8Unsafe(path));
     26 }
     27 
     28 }  // namespace
     29 
     30 class SandboxFileSystemBackendDelegateTest : public testing::Test {
     31  protected:
     32   virtual void SetUp() {
     33     ASSERT_TRUE(data_dir_.CreateUniqueTempDir());
     34     delegate_.reset(new SandboxFileSystemBackendDelegate(
     35         NULL /* quota_manager_proxy */,
     36         base::MessageLoopProxy::current().get(),
     37         data_dir_.path(),
     38         NULL /* special_storage_policy */,
     39         CreateAllowFileAccessOptions()));
     40   }
     41 
     42   base::ScopedTempDir data_dir_;
     43   base::MessageLoop message_loop_;
     44   scoped_ptr<SandboxFileSystemBackendDelegate> delegate_;
     45 };
     46 
     47 TEST_F(SandboxFileSystemBackendDelegateTest, IsAccessValid) {
     48   // Normal case.
     49   EXPECT_TRUE(delegate_->IsAccessValid(CreateFileSystemURL("a")));
     50 
     51   // Access to a path with parent references ('..') should be disallowed.
     52   EXPECT_FALSE(delegate_->IsAccessValid(CreateFileSystemURL("a/../b")));
     53 
     54   // Access from non-allowed scheme should be disallowed.
     55   EXPECT_FALSE(delegate_->IsAccessValid(
     56       FileSystemURL::CreateForTest(
     57           GURL("unknown://bar"), kFileSystemTypeTemporary,
     58           base::FilePath::FromUTF8Unsafe("foo"))));
     59 
     60   // Access with restricted name should be disallowed.
     61   EXPECT_FALSE(delegate_->IsAccessValid(CreateFileSystemURL(".")));
     62   EXPECT_FALSE(delegate_->IsAccessValid(CreateFileSystemURL("..")));
     63 
     64   // This is also disallowed due to Windows XP parent path handling.
     65   EXPECT_FALSE(delegate_->IsAccessValid(CreateFileSystemURL("...")));
     66 
     67   // These are identified as unsafe cases due to weird path handling
     68   // on Windows.
     69   EXPECT_FALSE(delegate_->IsAccessValid(CreateFileSystemURL(" ..")));
     70   EXPECT_FALSE(delegate_->IsAccessValid(CreateFileSystemURL(".. ")));
     71 
     72   // Similar but safe cases.
     73   EXPECT_TRUE(delegate_->IsAccessValid(CreateFileSystemURL(" .")));
     74   EXPECT_TRUE(delegate_->IsAccessValid(CreateFileSystemURL(". ")));
     75   EXPECT_TRUE(delegate_->IsAccessValid(CreateFileSystemURL("b.")));
     76   EXPECT_TRUE(delegate_->IsAccessValid(CreateFileSystemURL(".b")));
     77 
     78   // A path that looks like a drive letter.
     79   EXPECT_TRUE(delegate_->IsAccessValid(CreateFileSystemURL("c:")));
     80 }
     81 
     82 }  // namespace fileapi
     83