mirror of
https://github.com/gnif/LookingGlass.git
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139 lines
3.3 KiB
C
139 lines
3.3 KiB
C
/**
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* Looking Glass
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* Copyright © 2017-2026 The Looking Glass Authors
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* https://looking-glass.io
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc., 59
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* Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "platform/process.h"
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#include "common/win32.h"
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#include <fcntl.h>
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#include <io.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <windows.h>
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#include <shellapi.h>
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static bool bindStandardStream(FILE * stream, DWORD streamId)
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{
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const HANDLE handle = GetStdHandle(streamId);
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if (!handle || handle == INVALID_HANDLE_VALUE)
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return false;
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HANDLE duplicate = NULL;
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if (!DuplicateHandle(GetCurrentProcess(), handle, GetCurrentProcess(),
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&duplicate, 0, FALSE, DUPLICATE_SAME_ACCESS))
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return false;
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const int sourceFd = _open_osfhandle((intptr_t)duplicate, _O_TEXT);
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if (sourceFd < 0)
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{
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CloseHandle(duplicate);
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return false;
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}
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FILE * reopened = NULL;
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if (freopen_s(&reopened, "NUL", "w", stream))
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{
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_close(sourceFd);
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return false;
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}
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const int targetFd = _fileno(reopened);
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if (targetFd < 0 || _dup2(sourceFd, targetFd))
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{
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_close(sourceFd);
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return false;
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}
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_close(sourceFd);
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clearerr(reopened);
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setvbuf(reopened, NULL, _IONBF, 0);
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return true;
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}
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static void bindStandardStreams(void)
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{
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const bool stdoutBound = bindStandardStream(stdout, STD_OUTPUT_HANDLE);
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const bool stderrBound = bindStandardStream(stderr, STD_ERROR_HANDLE);
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if ((stdoutBound && stderrBound) || IsDebuggerPresent())
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return;
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if (!AttachConsole(ATTACH_PARENT_PROCESS))
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return;
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if (!stdoutBound)
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bindStandardStream(stdout, STD_OUTPUT_HANDLE);
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if (!stderrBound)
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bindStandardStream(stderr, STD_ERROR_HANDLE);
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}
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static void freeArguments(int argc, char * argv[])
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{
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if (!argv)
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return;
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for (int i = 0; i < argc; ++i)
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free(argv[i]);
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free(argv);
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}
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int WINAPI WinMain(HINSTANCE instance, HINSTANCE previousInstance,
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LPSTR commandLine, int showCommand)
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{
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(void)instance;
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(void)previousInstance;
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(void)commandLine;
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(void)showCommand;
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bindStandardStreams();
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int argc = 0;
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wchar_t ** wideArgv = CommandLineToArgvW(GetCommandLineW(), &argc);
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if (!wideArgv || argc < 1)
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{
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if (wideArgv)
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LocalFree(wideArgv);
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return EXIT_FAILURE;
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}
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char ** argv = calloc((size_t)argc + 1U, sizeof(*argv));
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if (!argv)
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{
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LocalFree(wideArgv);
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return EXIT_FAILURE;
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}
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for (int i = 0; i < argc; ++i)
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{
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argv[i] = lgWideToUtf8(wideArgv[i]);
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if (!argv[i])
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{
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freeArguments(argc, argv);
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LocalFree(wideArgv);
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return EXIT_FAILURE;
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}
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}
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LocalFree(wideArgv);
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const int result = lgClientMain(argc, argv);
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freeArguments(argc, argv);
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return result;
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}
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