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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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