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| 1 // Copyright (c) 2011 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/chromeos/fileapi/file_access_permissions.h" |
| 6 |
| 7 #include "base/command_line.h" |
| 8 #include "base/logging.h" |
| 9 |
| 10 namespace chromeos { |
| 11 |
| 12 FileAccessPermissions::FileAccessPermissions() {} |
| 13 |
| 14 FileAccessPermissions::~FileAccessPermissions() {} |
| 15 |
| 16 |
| 17 void FileAccessPermissions::GrantAccessPermission( |
| 18 const std::string& extension_id, const FilePath& path) { |
| 19 base::AutoLock locker(lock_); |
| 20 PathAccessMap::iterator path_map_iter = path_map_.find(extension_id); |
| 21 if (path_map_iter == path_map_.end()) { |
| 22 PathSet path_set; |
| 23 path_set.insert(path); |
| 24 path_map_.insert(PathAccessMap::value_type(extension_id, path_set)); |
| 25 } else { |
| 26 if (path_map_iter->second.find(path) != path_map_iter->second.end()) |
| 27 return; |
| 28 path_map_iter->second.insert(path); |
| 29 } |
| 30 } |
| 31 |
| 32 bool FileAccessPermissions::HasAccessPermission( |
| 33 const std::string& extension_id, const FilePath& path) { |
| 34 base::AutoLock locker(lock_); |
| 35 PathAccessMap::const_iterator path_map_iter = path_map_.find(extension_id); |
| 36 if (path_map_iter == path_map_.end()) |
| 37 return false; |
| 38 |
| 39 // Check this file and walk up its directory tree to find if this extension |
| 40 // has access to it. |
| 41 FilePath current_path = path.StripTrailingSeparators(); |
| 42 FilePath last_path; |
| 43 while (current_path != last_path) { |
| 44 if (path_map_iter->second.find(current_path) != path_map_iter->second.end()) |
| 45 return true; |
| 46 last_path = current_path; |
| 47 current_path = current_path.DirName(); |
| 48 } |
| 49 return false; |
| 50 } |
| 51 |
| 52 void FileAccessPermissions::RevokePermissions( |
| 53 const std::string& extension_id) { |
| 54 base::AutoLock locker(lock_); |
| 55 path_map_.erase(extension_id); |
| 56 } |
| 57 |
| 58 } |
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