Home | History | Annotate | Download | only in sync_file_system 
      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 "chrome/browser/sync_file_system/syncable_file_system_util.h"
      6 
      7 #include <vector>
      8 
      9 #include "base/command_line.h"
     10 #include "base/location.h"
     11 #include "base/strings/string_util.h"
     12 #include "storage/browser/fileapi/external_mount_points.h"
     13 #include "storage/browser/fileapi/file_observers.h"
     14 #include "storage/browser/fileapi/file_system_context.h"
     15 #include "storage/common/fileapi/file_system_util.h"
     16 
     17 using storage::ExternalMountPoints;
     18 using storage::FileSystemContext;
     19 using storage::FileSystemURL;
     20 
     21 namespace sync_file_system {
     22 
     23 namespace {
     24 
     25 const char kSyncableMountName[] = "syncfs";
     26 const char kSyncableMountNameForInternalSync[] = "syncfs-internal";
     27 
     28 const base::FilePath::CharType kSyncFileSystemDir[] =
     29     FILE_PATH_LITERAL("Sync FileSystem");
     30 
     31 void Noop() {}
     32 
     33 }  // namespace
     34 
     35 void RegisterSyncableFileSystem() {
     36   ExternalMountPoints::GetSystemInstance()->RegisterFileSystem(
     37       kSyncableMountName,
     38       storage::kFileSystemTypeSyncable,
     39       storage::FileSystemMountOption(),
     40       base::FilePath());
     41   ExternalMountPoints::GetSystemInstance()->RegisterFileSystem(
     42       kSyncableMountNameForInternalSync,
     43       storage::kFileSystemTypeSyncableForInternalSync,
     44       storage::FileSystemMountOption(),
     45       base::FilePath());
     46 }
     47 
     48 void RevokeSyncableFileSystem() {
     49   ExternalMountPoints::GetSystemInstance()->RevokeFileSystem(
     50       kSyncableMountName);
     51   ExternalMountPoints::GetSystemInstance()->RevokeFileSystem(
     52       kSyncableMountNameForInternalSync);
     53 }
     54 
     55 GURL GetSyncableFileSystemRootURI(const GURL& origin) {
     56   return GURL(
     57       storage::GetExternalFileSystemRootURIString(origin, kSyncableMountName));
     58 }
     59 
     60 FileSystemURL CreateSyncableFileSystemURL(const GURL& origin,
     61                                           const base::FilePath& path) {
     62   base::FilePath path_for_url = path;
     63   if (storage::VirtualPath::IsAbsolute(path.value()))
     64     path_for_url = base::FilePath(path.value().substr(1));
     65 
     66   return ExternalMountPoints::GetSystemInstance()->CreateExternalFileSystemURL(
     67       origin, kSyncableMountName, path_for_url);
     68 }
     69 
     70 FileSystemURL CreateSyncableFileSystemURLForSync(
     71     storage::FileSystemContext* file_system_context,
     72     const FileSystemURL& syncable_url) {
     73   return ExternalMountPoints::GetSystemInstance()->CreateExternalFileSystemURL(
     74       syncable_url.origin(),
     75       kSyncableMountNameForInternalSync,
     76       syncable_url.path());
     77 }
     78 
     79 bool SerializeSyncableFileSystemURL(const FileSystemURL& url,
     80                                     std::string* serialized_url) {
     81   if (!url.is_valid() || url.type() != storage::kFileSystemTypeSyncable)
     82     return false;
     83   *serialized_url =
     84       GetSyncableFileSystemRootURI(url.origin()).spec() +
     85       url.path().AsUTF8Unsafe();
     86   return true;
     87 }
     88 
     89 bool DeserializeSyncableFileSystemURL(
     90     const std::string& serialized_url, FileSystemURL* url) {
     91 #if !defined(FILE_PATH_USES_WIN_SEPARATORS)
     92   DCHECK(serialized_url.find('\\') == std::string::npos);
     93 #endif  // FILE_PATH_USES_WIN_SEPARATORS
     94 
     95   FileSystemURL deserialized =
     96       ExternalMountPoints::GetSystemInstance()->CrackURL(GURL(serialized_url));
     97   if (!deserialized.is_valid() ||
     98       deserialized.type() != storage::kFileSystemTypeSyncable) {
     99     return false;
    100   }
    101 
    102   *url = deserialized;
    103   return true;
    104 }
    105 
    106 base::FilePath GetSyncFileSystemDir(const base::FilePath& profile_base_dir) {
    107   return profile_base_dir.Append(kSyncFileSystemDir);
    108 }
    109 
    110 void RunSoon(const tracked_objects::Location& from_here,
    111              const base::Closure& callback) {
    112   base::MessageLoop::current()->PostTask(from_here, callback);
    113 }
    114 
    115 base::Closure NoopClosure() {
    116   return base::Bind(&Noop);
    117 }
    118 
    119 }  // namespace sync_file_system
    120