storage/browser/fileapi/dragged_file_util.cc

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