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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "mojo/edk/embedder/platform_channel_pair.h" | 5 #include "mojo/edk/embedder/platform_channel_pair.h" |
6 | 6 |
7 #include <windows.h> | 7 #include <windows.h> |
8 | 8 |
9 #include <string> | 9 #include <string> |
10 | 10 |
11 #include "base/command_line.h" | 11 #include "base/command_line.h" |
12 #include "base/logging.h" | 12 #include "base/logging.h" |
13 #include "base/rand_util.h" | 13 #include "base/rand_util.h" |
14 #include "base/strings/string_number_conversions.h" | 14 #include "base/strings/string_number_conversions.h" |
15 #include "base/strings/stringprintf.h" | 15 #include "base/strings/stringprintf.h" |
16 #include "base/win/windows_version.h" | 16 #include "base/win/windows_version.h" |
17 #include "mojo/edk/embedder/platform_handle.h" | 17 #include "mojo/edk/embedder/platform_handle.h" |
18 | 18 |
19 namespace mojo { | 19 namespace mojo { |
20 namespace embedder { | 20 namespace embedder { |
21 | 21 |
22 namespace { | 22 namespace { |
23 | 23 |
24 std::wstring GeneratePipeName() { | 24 std::wstring GeneratePipeName() { |
25 return base::StringPrintf(L"\\\\.\\pipe\\mojo.%u.%u.%I64u", | 25 return base::StringPrintf(L"\\\\.\\pipe\\mojo.%u.%u.%I64u", |
26 GetCurrentProcessId(), | 26 GetCurrentProcessId(), GetCurrentThreadId(), |
27 GetCurrentThreadId(), | |
28 base::RandUint64()); | 27 base::RandUint64()); |
29 } | 28 } |
30 | 29 |
31 } // namespace | 30 } // namespace |
32 | 31 |
33 PlatformChannelPair::PlatformChannelPair() { | 32 PlatformChannelPair::PlatformChannelPair() { |
34 std::wstring pipe_name = GeneratePipeName(); | 33 std::wstring pipe_name = GeneratePipeName(); |
35 | 34 |
36 const DWORD kOpenMode = | 35 const DWORD kOpenMode = |
37 PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED | FILE_FLAG_FIRST_PIPE_INSTANCE; | 36 PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED | FILE_FLAG_FIRST_PIPE_INSTANCE; |
38 const DWORD kPipeMode = PIPE_TYPE_BYTE | PIPE_READMODE_BYTE; | 37 const DWORD kPipeMode = PIPE_TYPE_BYTE | PIPE_READMODE_BYTE; |
39 server_handle_.reset(PlatformHandle( | 38 server_handle_.reset(PlatformHandle( |
40 CreateNamedPipeW(pipe_name.c_str(), | 39 CreateNamedPipeW(pipe_name.c_str(), kOpenMode, kPipeMode, |
41 kOpenMode, | |
42 kPipeMode, | |
43 1, // Max instances. | 40 1, // Max instances. |
44 4096, // Out buffer size. | 41 4096, // Out buffer size. |
45 4096, // In buffer size. | 42 4096, // In buffer size. |
46 5000, // Timeout in milliseconds. | 43 5000, // Timeout in milliseconds. |
47 nullptr))); // Default security descriptor. | 44 nullptr))); // Default security descriptor. |
48 PCHECK(server_handle_.is_valid()); | 45 PCHECK(server_handle_.is_valid()); |
49 | 46 |
50 const DWORD kDesiredAccess = GENERIC_READ | GENERIC_WRITE; | 47 const DWORD kDesiredAccess = GENERIC_READ | GENERIC_WRITE; |
51 // The SECURITY_ANONYMOUS flag means that the server side cannot impersonate | 48 // The SECURITY_ANONYMOUS flag means that the server side cannot impersonate |
52 // the client. | 49 // the client. |
53 const DWORD kFlags = | 50 const DWORD kFlags = |
54 SECURITY_SQOS_PRESENT | SECURITY_ANONYMOUS | FILE_FLAG_OVERLAPPED; | 51 SECURITY_SQOS_PRESENT | SECURITY_ANONYMOUS | FILE_FLAG_OVERLAPPED; |
55 // Allow the handle to be inherited by child processes. | 52 // Allow the handle to be inherited by child processes. |
56 SECURITY_ATTRIBUTES security_attributes = { | 53 SECURITY_ATTRIBUTES security_attributes = { |
57 sizeof(SECURITY_ATTRIBUTES), nullptr, TRUE}; | 54 sizeof(SECURITY_ATTRIBUTES), nullptr, TRUE}; |
58 client_handle_.reset( | 55 client_handle_.reset( |
59 PlatformHandle(CreateFileW(pipe_name.c_str(), | 56 PlatformHandle(CreateFileW(pipe_name.c_str(), kDesiredAccess, |
60 kDesiredAccess, | |
61 0, // No sharing. | 57 0, // No sharing. |
62 &security_attributes, | 58 &security_attributes, OPEN_EXISTING, kFlags, |
63 OPEN_EXISTING, | |
64 kFlags, | |
65 nullptr))); // No template file. | 59 nullptr))); // No template file. |
66 PCHECK(client_handle_.is_valid()); | 60 PCHECK(client_handle_.is_valid()); |
67 | 61 |
68 // Since a client has connected, ConnectNamedPipe() should return zero and | 62 // Since a client has connected, ConnectNamedPipe() should return zero and |
69 // GetLastError() should return ERROR_PIPE_CONNECTED. | 63 // GetLastError() should return ERROR_PIPE_CONNECTED. |
70 CHECK(!ConnectNamedPipe(server_handle_.get().handle, nullptr)); | 64 CHECK(!ConnectNamedPipe(server_handle_.get().handle, nullptr)); |
71 PCHECK(GetLastError() == ERROR_PIPE_CONNECTED); | 65 PCHECK(GetLastError() == ERROR_PIPE_CONNECTED); |
72 } | 66 } |
73 | 67 |
74 // static | 68 // static |
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108 << command_line->GetSwitchValueASCII(kMojoPlatformChannelHandleSwitch); | 102 << command_line->GetSwitchValueASCII(kMojoPlatformChannelHandleSwitch); |
109 // (Any existing switch won't actually be removed from the command line, but | 103 // (Any existing switch won't actually be removed from the command line, but |
110 // the last one appended takes precedence.) | 104 // the last one appended takes precedence.) |
111 command_line->AppendSwitchASCII( | 105 command_line->AppendSwitchASCII( |
112 kMojoPlatformChannelHandleSwitch, | 106 kMojoPlatformChannelHandleSwitch, |
113 base::IntToString(HandleToLong(client_handle_.get().handle))); | 107 base::IntToString(HandleToLong(client_handle_.get().handle))); |
114 } | 108 } |
115 | 109 |
116 } // namespace embedder | 110 } // namespace embedder |
117 } // namespace mojo | 111 } // namespace mojo |
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