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reactos/base/applications/shutdown/shutdown.c

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/*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS shutdown/logoff utility
* FILE: base/applications/shutdown/shutdown.c
* PURPOSE: Initiate logoff, shutdown or reboot of the system
*/
#include "precomp.h"
#include <stdlib.h>
#include <tchar.h>
#include <powrprof.h>
/*
* Takes the commandline arguments, and creates a
* struct which matches the arguments supplied.
*/
static DWORD
ParseArguments(struct CommandLineOptions* pOpts, int argc, WCHAR *argv[])
{
int index;
if (!pOpts)
return ERROR_INVALID_PARAMETER;
/* Reset all flags in struct */
pOpts->abort = FALSE;
pOpts->force = FALSE;
pOpts->logoff = FALSE;
pOpts->restart = FALSE;
pOpts->shutdown = FALSE;
pOpts->document_reason = FALSE;
pOpts->hibernate = FALSE;
pOpts->shutdown_delay = 30;
pOpts->remote_system = NULL;
pOpts->reason = ParseReasonCode(NULL); /* NOTE: NEVER use 0 here since it can delay the shutdown. */
pOpts->message = NULL;
pOpts->show_gui = FALSE;
/*
* Determine which flags the user has specified
* to the program so we can use them later.
*/
for (index = 1; index < argc; index++)
{
if (argv[index][0] == L'-' || argv[index][0] == L'/')
{
switch (towlower(argv[index][1]))
{
case L'?': /* Help */
ConResPuts(StdOut, IDS_USAGE);
return ERROR_SUCCESS;
case L'a': /* Cancel delayed shutdown */
pOpts->abort = TRUE;
break;
case L'c': /* Comment on reason for shutdown */
if (index+1 >= argc)
return ERROR_INVALID_DATA;
if (!argv[index+1] || wcslen(argv[index+1]) <= 512)
{
pOpts->message = argv[index+1];
index++;
}
else
{
ConResPuts(StdErr, IDS_ERROR_MAX_COMMENT_LENGTH);
return ERROR_BAD_LENGTH;
}
break;
case L'd': /* Reason code [p|u:]xx:yy */
if (index+1 >= argc)
return ERROR_INVALID_DATA;
pOpts->reason = ParseReasonCode(argv[index+1]);
index++;
break;
case L'e': /* Documents reason for shutdown */
/* TODO: Determine what this flag does exactly. */
pOpts->document_reason = TRUE;
break;
case L'f': /* Force shutdown without warning */
pOpts->force = TRUE;
break;
case L'h': /* Hibernate the local computer */
pOpts->hibernate = TRUE;
break;
case L'i': /* Shows GUI version of the tool */
pOpts->show_gui = TRUE;
break;
case L'l': /* Logoff the current user */
pOpts->logoff = TRUE;
break;
case L'm': /* Target remote systems (UNC name/IP address) */
if (index+1 >= argc)
return ERROR_INVALID_DATA;
pOpts->remote_system = argv[index+1];
index++;
break;
case L'p': /* Turn off local computer with no warning/time-out */
pOpts->force = TRUE;
pOpts->shutdown_delay = 0;
break;
case L'r': /* Restart computer */
pOpts->restart = TRUE;
break;
case L's': /* Shutdown */
pOpts->shutdown = TRUE;
break;
case L't': /* Shutdown delay */
if (index+1 >= argc)
return ERROR_INVALID_DATA;
pOpts->shutdown_delay = _wtoi(argv[index+1]);
if (pOpts->shutdown_delay > 0)
pOpts->force = TRUE;
index++;
break;
default:
/* Unknown arguments will exit the program. */
ConResPuts(StdOut, IDS_USAGE);
return ERROR_SUCCESS;
}
}
}
return ERROR_SUCCESS;
}
static DWORD
EnablePrivilege(LPCWSTR lpszPrivilegeName, BOOL bEnablePrivilege)
{
DWORD dwRet = ERROR_SUCCESS;
HANDLE hToken = NULL;
if (OpenProcessToken(GetCurrentProcess(),
TOKEN_ADJUST_PRIVILEGES,
&hToken))
{
TOKEN_PRIVILEGES tp;
tp.PrivilegeCount = 1;
tp.Privileges[0].Attributes = (bEnablePrivilege ? SE_PRIVILEGE_ENABLED : 0);
if (LookupPrivilegeValueW(NULL,
lpszPrivilegeName,
&tp.Privileges[0].Luid))
{
if (AdjustTokenPrivileges(hToken, FALSE, &tp, 0, NULL, NULL))
{
if (GetLastError() == ERROR_NOT_ALL_ASSIGNED)
dwRet = ERROR_NOT_ALL_ASSIGNED;
}
else
{
dwRet = GetLastError();
}
}
else
{
dwRet = GetLastError();
}
CloseHandle(hToken);
}
else
{
dwRet = GetLastError();
}
/* Display the error description if any */
if (dwRet != ERROR_SUCCESS) DisplayError(dwRet);
return dwRet;
}
/* Main entry for program */
int wmain(int argc, WCHAR *argv[])
{
DWORD error = ERROR_SUCCESS;
struct CommandLineOptions opts;
/* Initialize the Console Standard Streams */
ConInitStdStreams();
if (argc == 1) /* i.e. no commandline arguments given */
{
ConResPuts(StdOut, IDS_USAGE);
return EXIT_SUCCESS;
}
error = ParseArguments(&opts, argc, argv);
if (error != ERROR_SUCCESS)
{
DisplayError(error);
return EXIT_FAILURE;
}
/* If the user wants to abort a shutdown */
if (opts.abort)
{
/* First, the program has to determine if the shutdown/restart is local
or remote. This is done since each one requires separate privileges. */
if (opts.remote_system == NULL)
EnablePrivilege(SE_SHUTDOWN_NAME, TRUE);
else
EnablePrivilege(SE_REMOTE_SHUTDOWN_NAME, TRUE);
/* Abort the delayed system shutdown specified. */
if (!AbortSystemShutdownW(opts.remote_system))
{
ConResPuts(StdErr, IDS_ERROR_ABORT);
DisplayError(GetLastError());
return EXIT_FAILURE;
}
else
{
return EXIT_SUCCESS;
}
}
/*
* If the user wants to hibernate the computer. Assume
* that the user wants to wake the computer up from
* hibernation and it should not force it on the system.
*/
if (opts.hibernate)
{
if (IsPwrHibernateAllowed())
{
EnablePrivilege(SE_SHUTDOWN_NAME, TRUE);
/* The shutdown utility cannot hibernate remote systems */
if (opts.remote_system != NULL)
{
return EXIT_FAILURE;
}
if (!SetSuspendState(TRUE, FALSE, FALSE))
{
ConResPuts(StdErr, IDS_ERROR_HIBERNATE);
DisplayError(GetLastError());
return EXIT_FAILURE;
}
else
{
ConResPuts(StdOut, IDS_ERROR_HIBERNATE_ENABLED);
return EXIT_SUCCESS;
}
}
else
{
return EXIT_FAILURE;
}
}
/* Both shutdown and restart flags cannot both be true */
if (opts.shutdown && opts.restart)
{
ConResPuts(StdErr, IDS_ERROR_SHUTDOWN_REBOOT);
return EXIT_FAILURE;
}
/* Ensure that the timeout amount is not too high or a negative number */
if (opts.shutdown_delay > MAX_SHUTDOWN_TIMEOUT)
{
ConResPrintf(StdErr, IDS_ERROR_TIMEOUT, opts.shutdown_delay);
return EXIT_FAILURE;
}
/* If the user wants a GUI environment */
if (opts.show_gui)
{
if (ShutdownGuiMain(opts))
return EXIT_SUCCESS;
else
return EXIT_FAILURE;
}
if (opts.logoff && (opts.remote_system == NULL))
{
/*
* NOTE: Sometimes, shutdown and logoff are used together. If the logoff
* flag is used by itself, then simply logoff. But if used with shutdown,
* then skip logging off of the computer and eventually go to the action
* for shutdown.
*/
if (!opts.shutdown && !opts.restart)
{
EnablePrivilege(SE_SHUTDOWN_NAME, TRUE);
if (ExitWindowsEx(EWX_LOGOFF, opts.reason))
{
return EXIT_SUCCESS;
}
else
{
ConResPuts(StdErr, IDS_ERROR_LOGOFF);
DisplayError(GetLastError());
return EXIT_FAILURE;
}
}
}
/*
* Since both shutting down the system and restarting calls the exact same
* function, all we need to know is if we wanted to restart or shutdown.
*/
if (opts.shutdown || opts.restart)
{
/*
* First, the program has to determine if the shutdown/restart is local
* or remote. This is done since each one requires separate privileges.
*/
if (opts.remote_system == NULL)
{
EnablePrivilege(SE_SHUTDOWN_NAME, TRUE);
}
else
{
/* TODO: Remote shutdown is not supported yet */
// EnablePrivilege(SE_REMOTE_SHUTDOWN_NAME, TRUE);
return EXIT_SUCCESS;
}
/* Initiate the shutdown */
if (!InitiateSystemShutdownExW(opts.remote_system,
opts.message,
opts.shutdown_delay,
opts.force,
opts.restart,
opts.reason))
{
/*
* If there is an error, give the proper output depending
* on whether the user wanted to shutdown or restart.
*/
if (opts.restart)
ConResPuts(StdErr, IDS_ERROR_RESTART);
else
ConResPuts(StdErr, IDS_ERROR_SHUTDOWN);
DisplayError(GetLastError());
return EXIT_FAILURE;
}
else
{
return EXIT_SUCCESS;
}
}
return EXIT_SUCCESS;
}
/* EOF */
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