1 // Copyright (c) 2006-2008 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 "sandbox/win/src/named_pipe_interception.h" 6 7 #include "sandbox/win/src/crosscall_client.h" 8 #include "sandbox/win/src/ipc_tags.h" 9 #include "sandbox/win/src/policy_params.h" 10 #include "sandbox/win/src/policy_target.h" 11 #include "sandbox/win/src/sandbox_factory.h" 12 #include "sandbox/win/src/sandbox_nt_util.h" 13 #include "sandbox/win/src/sharedmem_ipc_client.h" 14 #include "sandbox/win/src/target_services.h" 15 16 namespace sandbox { 17 18 HANDLE WINAPI TargetCreateNamedPipeW( 19 CreateNamedPipeWFunction orig_CreateNamedPipeW, LPCWSTR pipe_name, 20 DWORD open_mode, DWORD pipe_mode, DWORD max_instance, DWORD out_buffer_size, 21 DWORD in_buffer_size, DWORD default_timeout, 22 LPSECURITY_ATTRIBUTES security_attributes) { 23 HANDLE pipe = orig_CreateNamedPipeW(pipe_name, open_mode, pipe_mode, 24 max_instance, out_buffer_size, 25 in_buffer_size, default_timeout, 26 security_attributes); 27 if (INVALID_HANDLE_VALUE != pipe) 28 return pipe; 29 30 // We don't trust that the IPC can work this early. 31 if (!SandboxFactory::GetTargetServices()->GetState()->InitCalled()) 32 return INVALID_HANDLE_VALUE; 33 34 DWORD original_error = ::GetLastError(); 35 36 // We don't support specific Security Attributes. 37 if (security_attributes) 38 return INVALID_HANDLE_VALUE; 39 40 do { 41 void* memory = GetGlobalIPCMemory(); 42 if (NULL == memory) 43 break; 44 45 CountedParameterSet<NameBased> params; 46 params[NameBased::NAME] = ParamPickerMake(pipe_name); 47 48 if (!QueryBroker(IPC_CREATENAMEDPIPEW_TAG, params.GetBase())) 49 break; 50 51 SharedMemIPCClient ipc(memory); 52 CrossCallReturn answer = {0}; 53 ResultCode code = CrossCall(ipc, IPC_CREATENAMEDPIPEW_TAG, pipe_name, 54 open_mode, pipe_mode, max_instance, 55 out_buffer_size, in_buffer_size, 56 default_timeout, &answer); 57 if (SBOX_ALL_OK != code) 58 break; 59 60 ::SetLastError(answer.win32_result); 61 62 if (ERROR_SUCCESS != answer.win32_result) 63 return INVALID_HANDLE_VALUE; 64 65 return answer.handle; 66 } while (false); 67 68 ::SetLastError(original_error); 69 return INVALID_HANDLE_VALUE; 70 } 71 72 } // namespace sandbox 73
