1 // Copyright (c) 2012 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 "content/browser/renderer_host/file_utilities_message_filter.h" 6 7 #include "base/file_util.h" 8 #include "content/browser/child_process_security_policy_impl.h" 9 #include "content/common/file_utilities_messages.h" 10 11 namespace content { 12 13 FileUtilitiesMessageFilter::FileUtilitiesMessageFilter(int process_id) 14 : BrowserMessageFilter(FileUtilitiesMsgStart), 15 process_id_(process_id) { 16 } 17 18 FileUtilitiesMessageFilter::~FileUtilitiesMessageFilter() { 19 } 20 21 void FileUtilitiesMessageFilter::OverrideThreadForMessage( 22 const IPC::Message& message, 23 BrowserThread::ID* thread) { 24 if (IPC_MESSAGE_CLASS(message) == FileUtilitiesMsgStart) 25 *thread = BrowserThread::FILE; 26 } 27 28 bool FileUtilitiesMessageFilter::OnMessageReceived( 29 const IPC::Message& message) { 30 bool handled = true; 31 IPC_BEGIN_MESSAGE_MAP(FileUtilitiesMessageFilter, message) 32 IPC_MESSAGE_HANDLER(FileUtilitiesMsg_GetFileInfo, OnGetFileInfo) 33 IPC_MESSAGE_UNHANDLED(handled = false) 34 IPC_END_MESSAGE_MAP() 35 return handled; 36 } 37 38 void FileUtilitiesMessageFilter::OnGetFileInfo( 39 const base::FilePath& path, 40 base::File::Info* result, 41 base::File::Error* status) { 42 *result = base::File::Info(); 43 *status = base::File::FILE_OK; 44 45 // Get file metadata only when the child process has been granted 46 // permission to read the file. 47 if (!ChildProcessSecurityPolicyImpl::GetInstance()->CanReadFile( 48 process_id_, path)) { 49 return; 50 } 51 52 if (!base::GetFileInfo(path, result)) 53 *status = base::File::FILE_ERROR_FAILED; 54 } 55 56 } // namespace content 57
