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/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 base::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 base::FilePath& path) const { 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 base::FilePath current_path = path.StripTrailingSeparators(); 42 base::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 } // namespace chromeos 59
