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
TargetCreateNamedPipeW(CreateNamedPipeWFunction orig_CreateNamedPipeW,LPCWSTR pipe_name,DWORD open_mode,DWORD pipe_mode,DWORD max_instance,DWORD out_buffer_size,DWORD in_buffer_size,DWORD default_timeout,LPSECURITY_ATTRIBUTES security_attributes)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