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/dragged_file_util.h"
6
7#include <string>
8#include <vector>
9
10#include "base/file_util.h"
11#include "webkit/browser/fileapi/file_system_context.h"
12#include "webkit/browser/fileapi/file_system_operation_context.h"
13#include "webkit/browser/fileapi/file_system_url.h"
14#include "webkit/browser/fileapi/isolated_context.h"
15#include "webkit/browser/fileapi/native_file_util.h"
16#include "webkit/common/blob/shareable_file_reference.h"
17
18namespace fileapi {
19
20typedef IsolatedContext::MountPointInfo FileInfo;
21
22namespace {
23
24// Simply enumerate each path from a given fileinfo set.
25// Used to enumerate top-level paths of an isolated filesystem.
26class SetFileEnumerator : public FileSystemFileUtil::AbstractFileEnumerator {
27 public:
28  explicit SetFileEnumerator(const std::vector<FileInfo>& files)
29      : files_(files) {
30    file_iter_ = files_.begin();
31  }
32  virtual ~SetFileEnumerator() {}
33
34  // AbstractFileEnumerator overrides.
35  virtual base::FilePath Next() OVERRIDE {
36    if (file_iter_ == files_.end())
37      return base::FilePath();
38    base::FilePath platform_file = (file_iter_++)->path;
39    NativeFileUtil::GetFileInfo(platform_file, &file_info_);
40    return platform_file;
41  }
42  virtual int64 Size() OVERRIDE { return file_info_.size; }
43  virtual bool IsDirectory() OVERRIDE { return file_info_.is_directory; }
44  virtual base::Time LastModifiedTime() OVERRIDE {
45    return file_info_.last_modified;
46  }
47
48 private:
49  std::vector<FileInfo> files_;
50  std::vector<FileInfo>::const_iterator file_iter_;
51  base::File::Info file_info_;
52};
53
54}  // namespace
55
56//-------------------------------------------------------------------------
57
58DraggedFileUtil::DraggedFileUtil() {}
59
60base::File::Error DraggedFileUtil::GetFileInfo(
61    FileSystemOperationContext* context,
62    const FileSystemURL& url,
63    base::File::Info* file_info,
64    base::FilePath* platform_path) {
65  DCHECK(file_info);
66  std::string filesystem_id;
67  DCHECK(url.is_valid());
68  if (url.path().empty()) {
69    // The root directory case.
70    // For now we leave three time fields (modified/accessed/creation time)
71    // NULL as it is not really clear what to be set for this virtual directory.
72    // TODO(kinuko): Maybe we want to set the time when this filesystem is
73    // created (i.e. when the files/directories are dropped).
74    file_info->is_directory = true;
75    file_info->is_symbolic_link = false;
76    file_info->size = 0;
77    return base::File::FILE_OK;
78  }
79  base::File::Error error =
80      NativeFileUtil::GetFileInfo(url.path(), file_info);
81  if (base::IsLink(url.path()) && !base::FilePath().IsParent(url.path())) {
82    // Don't follow symlinks unless it's the one that are selected by the user.
83    return base::File::FILE_ERROR_NOT_FOUND;
84  }
85  if (error == base::File::FILE_OK)
86    *platform_path = url.path();
87  return error;
88}
89
90scoped_ptr<FileSystemFileUtil::AbstractFileEnumerator>
91    DraggedFileUtil::CreateFileEnumerator(
92        FileSystemOperationContext* context,
93        const FileSystemURL& root) {
94  DCHECK(root.is_valid());
95  if (!root.path().empty())
96    return LocalFileUtil::CreateFileEnumerator(context, root);
97
98  // Root path case.
99  std::vector<FileInfo> toplevels;
100  IsolatedContext::GetInstance()->GetDraggedFileInfo(
101      root.filesystem_id(), &toplevels);
102  return scoped_ptr<AbstractFileEnumerator>(new SetFileEnumerator(toplevels));
103}
104
105}  // namespace fileapi
106