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Sweden-Number/programs/taskkill/taskkill.c

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/*
* Task termination utility
*
* Copyright 2008 Andrew Riedi
* Copyright 2010 Andrew Nguyen
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <stdlib.h>
#include <windows.h>
#include <psapi.h>
#include <wine/debug.h>
#include <wine/unicode.h>
#include "taskkill.h"
WINE_DEFAULT_DEBUG_CHANNEL(taskkill);
static BOOL force_termination = FALSE;
static WCHAR **task_list;
static unsigned int task_count;
struct pid_close_info
{
DWORD pid;
BOOL found;
};
static int taskkill_vprintfW(const WCHAR *msg, __ms_va_list va_args)
{
int wlen;
DWORD count, ret;
WCHAR msg_buffer[8192];
wlen = FormatMessageW(FORMAT_MESSAGE_FROM_STRING, msg, 0, 0, msg_buffer,
sizeof(msg_buffer)/sizeof(*msg_buffer), &va_args);
ret = WriteConsoleW(GetStdHandle(STD_OUTPUT_HANDLE), msg_buffer, wlen, &count, NULL);
if (!ret)
{
DWORD len;
char *msgA;
/* On Windows WriteConsoleW() fails if the output is redirected. So fall
* back to WriteFile(), assuming the console encoding is still the right
* one in that case.
*/
len = WideCharToMultiByte(GetConsoleOutputCP(), 0, msg_buffer, wlen,
NULL, 0, NULL, NULL);
msgA = HeapAlloc(GetProcessHeap(), 0, len);
if (!msgA)
return 0;
WideCharToMultiByte(GetConsoleOutputCP(), 0, msg_buffer, wlen, msgA, len,
NULL, NULL);
WriteFile(GetStdHandle(STD_OUTPUT_HANDLE), msgA, len, &count, FALSE);
HeapFree(GetProcessHeap(), 0, msgA);
}
return count;
}
static int CDECL taskkill_printfW(const WCHAR *msg, ...)
{
__ms_va_list va_args;
int len;
__ms_va_start(va_args, msg);
len = taskkill_vprintfW(msg, va_args);
__ms_va_end(va_args);
return len;
}
static int CDECL taskkill_message_printfW(int msg, ...)
{
__ms_va_list va_args;
WCHAR msg_buffer[8192];
int len;
LoadStringW(GetModuleHandleW(NULL), msg, msg_buffer,
sizeof(msg_buffer)/sizeof(WCHAR));
__ms_va_start(va_args, msg);
len = taskkill_vprintfW(msg_buffer, va_args);
__ms_va_end(va_args);
return len;
}
static int taskkill_message(int msg)
{
static const WCHAR formatW[] = {'%','1',0};
WCHAR msg_buffer[8192];
LoadStringW(GetModuleHandleW(NULL), msg, msg_buffer,
sizeof(msg_buffer)/sizeof(WCHAR));
return taskkill_printfW(formatW, msg_buffer);
}
/* Post WM_CLOSE to all top-level windows belonging to the process with specified PID. */
static BOOL CALLBACK pid_enum_proc(HWND hwnd, LPARAM lParam)
{
struct pid_close_info *info = (struct pid_close_info *)lParam;
DWORD hwnd_pid;
GetWindowThreadProcessId(hwnd, &hwnd_pid);
if (hwnd_pid == info->pid)
{
PostMessageW(hwnd, WM_CLOSE, 0, 0);
info->found = TRUE;
}
return TRUE;
}
static DWORD *enumerate_processes(DWORD *list_count)
{
DWORD *pid_list, alloc_bytes = 1024 * sizeof(*pid_list), needed_bytes;
pid_list = HeapAlloc(GetProcessHeap(), 0, alloc_bytes);
if (!pid_list)
return NULL;
for (;;)
{
DWORD *realloc_list;
if (!EnumProcesses(pid_list, alloc_bytes, &needed_bytes))
{
HeapFree(GetProcessHeap(), 0, pid_list);
return NULL;
}
/* EnumProcesses can't signal an insufficient buffer condition, so the
* only way to possibly determine whether a larger buffer is required
* is to see whether the written number of bytes is the same as the
* buffer size. If so, the buffer will be reallocated to twice the
* size. */
if (alloc_bytes != needed_bytes)
break;
alloc_bytes *= 2;
realloc_list = HeapReAlloc(GetProcessHeap(), 0, pid_list, alloc_bytes);
if (!realloc_list)
{
HeapFree(GetProcessHeap(), 0, pid_list);
return NULL;
}
pid_list = realloc_list;
}
*list_count = needed_bytes / sizeof(*pid_list);
return pid_list;
}
static BOOL get_process_name_from_pid(DWORD pid, WCHAR *buf, DWORD chars)
{
HANDLE process;
HMODULE module;
DWORD required_size;
process = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pid);
if (!process)
return FALSE;
if (!EnumProcessModules(process, &module, sizeof(module), &required_size))
{
CloseHandle(process);
return FALSE;
}
if (!GetModuleBaseNameW(process, module, buf, chars))
{
CloseHandle(process);
return FALSE;
}
CloseHandle(process);
return TRUE;
}
/* The implemented task enumeration and termination behavior does not
* exactly match native behavior. On Windows:
*
* In the case of terminating by process name, specifying a particular
* process name more times than the number of running instances causes
* all instances to be terminated, but termination failure messages to
* be printed as many times as the difference between the specification
* quantity and the number of running instances.
*
* Successful terminations are all listed first in order, with failing
* terminations being listed at the end.
*
* A PID of zero causes taskkill to warn about the inability to terminate
* system processes. */
static int send_close_messages(void)
{
DWORD *pid_list, pid_list_size;
DWORD self_pid = GetCurrentProcessId();
unsigned int i;
int status_code = 0;
pid_list = enumerate_processes(&pid_list_size);
if (!pid_list)
{
taskkill_message(STRING_ENUM_FAILED);
return 1;
}
for (i = 0; i < task_count; i++)
{
WCHAR *p = task_list[i];
BOOL is_numeric = TRUE;
/* Determine whether the string is not numeric. */
while (*p)
{
if (!isdigitW(*p++))
{
is_numeric = FALSE;
break;
}
}
if (is_numeric)
{
DWORD pid = atoiW(task_list[i]);
struct pid_close_info info = { pid };
if (pid == self_pid)
{
taskkill_message(STRING_SELF_TERMINATION);
status_code = 1;
continue;
}
EnumWindows(pid_enum_proc, (LPARAM)&info);
if (info.found)
taskkill_message_printfW(STRING_CLOSE_PID_SEARCH, pid);
else
{
taskkill_message_printfW(STRING_SEARCH_FAILED, task_list[i]);
status_code = 128;
}
}
else
{
DWORD index;
BOOL found_process = FALSE;
for (index = 0; index < pid_list_size; index++)
{
WCHAR process_name[MAX_PATH];
if (get_process_name_from_pid(pid_list[index], process_name, MAX_PATH) &&
!strcmpiW(process_name, task_list[i]))
{
struct pid_close_info info = { pid_list[index] };
found_process = TRUE;
if (pid_list[index] == self_pid)
{
taskkill_message(STRING_SELF_TERMINATION);
status_code = 1;
continue;
}
EnumWindows(pid_enum_proc, (LPARAM)&info);
taskkill_message_printfW(STRING_CLOSE_PROC_SRCH, process_name, pid_list[index]);
}
}
if (!found_process)
{
taskkill_message_printfW(STRING_SEARCH_FAILED, task_list[i]);
status_code = 128;
}
}
}
HeapFree(GetProcessHeap(), 0, pid_list);
return status_code;
}
static int terminate_processes(void)
{
DWORD *pid_list, pid_list_size;
DWORD self_pid = GetCurrentProcessId();
unsigned int i;
int status_code = 0;
pid_list = enumerate_processes(&pid_list_size);
if (!pid_list)
{
taskkill_message(STRING_ENUM_FAILED);
return 1;
}
for (i = 0; i < task_count; i++)
{
WCHAR *p = task_list[i];
BOOL is_numeric = TRUE;
/* Determine whether the string is not numeric. */
while (*p)
{
if (!isdigitW(*p++))
{
is_numeric = FALSE;
break;
}
}
if (is_numeric)
{
DWORD pid = atoiW(task_list[i]);
HANDLE process;
if (pid == self_pid)
{
taskkill_message(STRING_SELF_TERMINATION);
status_code = 1;
continue;
}
process = OpenProcess(PROCESS_TERMINATE, FALSE, pid);
if (!process)
{
taskkill_message_printfW(STRING_SEARCH_FAILED, task_list[i]);
status_code = 128;
continue;
}
if (!TerminateProcess(process, 0))
{
taskkill_message_printfW(STRING_TERMINATE_FAILED, task_list[i]);
status_code = 1;
CloseHandle(process);
continue;
}
taskkill_message_printfW(STRING_TERM_PID_SEARCH, pid);
CloseHandle(process);
}
else
{
DWORD index;
BOOL found_process = FALSE;
for (index = 0; index < pid_list_size; index++)
{
WCHAR process_name[MAX_PATH];
if (get_process_name_from_pid(pid_list[index], process_name, MAX_PATH) &&
!strcmpiW(process_name, task_list[i]))
{
HANDLE process;
if (pid_list[index] == self_pid)
{
taskkill_message(STRING_SELF_TERMINATION);
status_code = 1;
continue;
}
process = OpenProcess(PROCESS_TERMINATE, FALSE, pid_list[index]);
if (!process)
{
taskkill_message_printfW(STRING_SEARCH_FAILED, task_list[i]);
status_code = 128;
continue;
}
if (!TerminateProcess(process, 0))
{
taskkill_message_printfW(STRING_TERMINATE_FAILED, task_list[i]);
status_code = 1;
CloseHandle(process);
continue;
}
found_process = TRUE;
taskkill_message_printfW(STRING_TERM_PROC_SEARCH, task_list[i], pid_list[index]);
CloseHandle(process);
}
}
if (!found_process)
{
taskkill_message_printfW(STRING_SEARCH_FAILED, task_list[i]);
status_code = 128;
}
}
}
HeapFree(GetProcessHeap(), 0, pid_list);
return status_code;
}
static BOOL add_to_task_list(WCHAR *name)
{
static unsigned int list_size = 16;
if (!task_list)
{
task_list = HeapAlloc(GetProcessHeap(), 0,
list_size * sizeof(*task_list));
if (!task_list)
return FALSE;
}
else if (task_count == list_size)
{
void *realloc_list;
list_size *= 2;
realloc_list = HeapReAlloc(GetProcessHeap(), 0, task_list,
list_size * sizeof(*task_list));
if (!realloc_list)
return FALSE;
task_list = realloc_list;
}
task_list[task_count++] = name;
return TRUE;
}
/* FIXME Argument processing does not match behavior observed on Windows.
* Stringent argument counting and processing is performed, and unrecognized
* options are detected as parameters when placed after options that accept one. */
static BOOL process_arguments(int argc, WCHAR *argv[])
{
static const WCHAR slashForceTerminate[] = {'/','f',0};
static const WCHAR slashImage[] = {'/','i','m',0};
static const WCHAR slashPID[] = {'/','p','i','d',0};
static const WCHAR slashHelp[] = {'/','?',0};
static const WCHAR slashTerminateChildren[] = {'/','t',0};
if (argc > 1)
{
int i;
BOOL has_im = FALSE, has_pid = FALSE;
/* Only the lone help option is recognized. */
if (argc == 2 && !strcmpW(slashHelp, argv[1]))
{
taskkill_message(STRING_USAGE);
exit(0);
}
for (i = 1; i < argc; i++)
{
int got_im = 0, got_pid = 0;
if (!strcmpiW(slashTerminateChildren, argv[i]))
WINE_FIXME("/T not supported\n");
if (!strcmpiW(slashForceTerminate, argv[i]))
force_termination = TRUE;
/* Options /IM and /PID appear to behave identically, except for
* the fact that they cannot be specified at the same time. */
else if ((got_im = !strcmpiW(slashImage, argv[i])) ||
(got_pid = !strcmpiW(slashPID, argv[i])))
{
if (!argv[i + 1])
{
taskkill_message_printfW(STRING_MISSING_PARAM, argv[i]);
taskkill_message(STRING_USAGE);
return FALSE;
}
if (got_im) has_im = TRUE;
if (got_pid) has_pid = TRUE;
if (has_im && has_pid)
{
taskkill_message(STRING_MUTUAL_EXCLUSIVE);
taskkill_message(STRING_USAGE);
return FALSE;
}
if (!add_to_task_list(argv[i + 1]))
return FALSE;
i++;
}
else
{
taskkill_message(STRING_INVALID_OPTION);
taskkill_message(STRING_USAGE);
return FALSE;
}
}
}
else
{
taskkill_message(STRING_MISSING_OPTION);
taskkill_message(STRING_USAGE);
return FALSE;
}
return TRUE;
}
int wmain(int argc, WCHAR *argv[])
{
int status_code = 0;
if (!process_arguments(argc, argv))
{
HeapFree(GetProcessHeap(), 0, task_list);
return 1;
}
if (force_termination)
status_code = terminate_processes();
else
status_code = send_close_messages();
HeapFree(GetProcessHeap(), 0, task_list);
return status_code;
}
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