forked from mirrors/gecko-dev
30b7f20b67
This patch introduces two classes WinRemoteMessageSender/Receiver to generate/parse a payload of WM_COPYDATA message which is sent from nsWinRemoteClient to nsWinRemoteServer. And, we change the encoding of the payload from utf-8 to utf-16, incrementing the message version from 1 to 2, because our parsing logic on nsWinRemoteServer does not support a variable-width character encoding like utf-8. Differential Revision: https://phabricator.services.mozilla.com/D84228
68 lines
2.4 KiB
C++
68 lines
2.4 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef __WinRemoteMessage_h__
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#define __WinRemoteMessage_h__
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#include <windows.h>
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#include "nsICommandLineRunner.h"
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#include "nsCOMPtr.h"
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// This version defines the format of COPYDATASTRUCT::lpData in a message of
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// WM_COPYDATA.
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// Always use the latest version for production use because the older versions
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// have a bug that a non-ascii character in a utf-8 message cannot be parsed
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// correctly (bug 1650637). We keep the older versions for backward
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// compatibility and the testing purpose only.
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enum class WinRemoteMessageVersion : uint32_t {
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// "<CommandLine>\0" in utf8
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CommandLineOnly = 0,
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// "<CommandLine>\0<WorkingDir>\0" in utf8
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CommandLineAndWorkingDir,
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// L"<CommandLine>\0<WorkingDir>\0" in utf16
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CommandLineAndWorkingDirInUtf16,
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};
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class WinRemoteMessageSender final {
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COPYDATASTRUCT mData;
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nsAutoString mUtf16Buffer;
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nsAutoCString mUtf8Buffer;
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public:
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WinRemoteMessageSender(const wchar_t* aCommandLine,
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const wchar_t* aWorkingDir);
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WinRemoteMessageSender(const WinRemoteMessageSender&) = delete;
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WinRemoteMessageSender(WinRemoteMessageSender&&) = delete;
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WinRemoteMessageSender& operator=(const WinRemoteMessageSender&) = delete;
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WinRemoteMessageSender& operator=(WinRemoteMessageSender&&) = delete;
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COPYDATASTRUCT* CopyData();
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// Constructors for the old formats. Testing purpose only.
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explicit WinRemoteMessageSender(const char* aCommandLine);
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WinRemoteMessageSender(const char* aCommandLine, const char* aWorkingDir);
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};
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class WinRemoteMessageReceiver final {
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nsCOMPtr<nsICommandLineRunner> mCommandLine;
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nsresult ParseV0(char* aBuffer);
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nsresult ParseV1(char* aBuffer);
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nsresult ParseV2(char16_t* aBuffer);
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public:
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WinRemoteMessageReceiver() = default;
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WinRemoteMessageReceiver(const WinRemoteMessageReceiver&) = delete;
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WinRemoteMessageReceiver(WinRemoteMessageReceiver&&) = delete;
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WinRemoteMessageReceiver& operator=(const WinRemoteMessageReceiver&) = delete;
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WinRemoteMessageReceiver& operator=(WinRemoteMessageReceiver&&) = delete;
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nsresult Parse(COPYDATASTRUCT* aMessageData);
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nsICommandLineRunner* CommandLineRunner();
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};
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#endif // __WinRemoteMessage_h__
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