1 /*
2  * PROJECT:     ReactOS Task Manager
3  * LICENSE:     LGPL-2.1-or-later (https://spdx.org/licenses/LGPL-2.1-or-later)
4  * PURPOSE:     Processes Page
5  * COPYRIGHT:   Copyright 1999-2001 Brian Palmer <brianp@reactos.org>
6  *              Copyright 2009 Maxime Vernier <maxime.vernier@gmail.com>
7  *              Copyright 2022 Thamatip Chitpong <tangaming123456@outlook.com>
8  */
9 
10 #include "precomp.h"
11 
12 #include "proclist.h"
13 
14 #include <ndk/psfuncs.h>
15 
16 #define CMP(x1, x2)\
17     (x1 < x2 ? -1 : (x1 > x2 ? 1 : 0))
18 
19 #define CONST_STR_LEN(str) (_countof(str) - 1)
20 
21 typedef struct
22 {
23     ULONG ProcessId;
24 } PROCESS_PAGE_LIST_ITEM, *LPPROCESS_PAGE_LIST_ITEM;
25 
26 HWND hProcessPage;                      /* Process List Property Page */
27 
28 HWND hProcessPageListCtrl;              /* Process ListCtrl Window */
29 HWND hProcessPageHeaderCtrl;            /* Process Header Control */
30 static HWND hProcessPageEndProcessButton;      /* Process End Process button */
31 static HWND hProcessPageShowAllProcessesButton;/* Process Show All Processes checkbox */
32 BOOL bProcessPageSelectionMade = FALSE; /* Is item in ListCtrl selected */
33 
34 static int  nProcessPageWidth;
35 static int  nProcessPageHeight;
36 #ifdef RUN_PROC_PAGE
37 static HANDLE   hProcessThread = NULL;
38 static DWORD    dwProcessThread;
39 #endif
40 
41 int CALLBACK    ProcessPageCompareFunc(LPARAM lParam1, LPARAM lParam2, LPARAM lParamSort);
42 void AddProcess(ULONG Index);
43 void UpdateProcesses();
44 void gethmsfromlargeint(LARGE_INTEGER largeint, DWORD *dwHours, DWORD *dwMinutes, DWORD *dwSeconds);
45 void ProcessPageOnNotify(WPARAM wParam, LPARAM lParam);
46 void ProcessPageShowContextMenu(DWORD dwProcessId);
47 BOOL PerfDataGetText(ULONG Index, ULONG ColumnIndex, LPTSTR lpText, ULONG nMaxCount);
48 DWORD WINAPI ProcessPageRefreshThread(void *lpParameter);
49 int ProcessRunning(ULONG ProcessId);
50 
51 void Cleanup(void)
52 {
53     int i;
54     LV_ITEM item;
55     LPPROCESS_PAGE_LIST_ITEM pData;
56     for (i = 0; i < ListView_GetItemCount(hProcessPageListCtrl); i++)
57     {
58         memset(&item, 0, sizeof(LV_ITEM));
59         item.mask = LVIF_PARAM;
60         item.iItem = i;
61         (void)ListView_GetItem(hProcessPageListCtrl, &item);
62         pData = (LPPROCESS_PAGE_LIST_ITEM)item.lParam;
63         HeapFree(GetProcessHeap(), 0, pData);
64     }
65 }
66 
67 int ProcGetIndexByProcessId(DWORD dwProcessId)
68 {
69     int     i;
70     LVITEM  item;
71     LPPROCESS_PAGE_LIST_ITEM pData;
72 
73     for (i=0; i<ListView_GetItemCount(hProcessPageListCtrl); i++)
74     {
75         memset(&item, 0, sizeof(LV_ITEM));
76         item.mask = LVIF_PARAM;
77         item.iItem = i;
78         (void)ListView_GetItem(hProcessPageListCtrl, &item);
79         pData = (LPPROCESS_PAGE_LIST_ITEM)item.lParam;
80         if (pData->ProcessId == dwProcessId)
81         {
82             return i;
83         }
84     }
85     return 0;
86 }
87 
88 DWORD GetSelectedProcessId(void)
89 {
90     int     Index;
91     LVITEM  lvitem;
92 
93     if(ListView_GetSelectedCount(hProcessPageListCtrl) == 1)
94     {
95         Index = ListView_GetSelectionMark(hProcessPageListCtrl);
96 
97         memset(&lvitem, 0, sizeof(LVITEM));
98 
99         lvitem.mask = LVIF_PARAM;
100         lvitem.iItem = Index;
101 
102         (void)ListView_GetItem(hProcessPageListCtrl, &lvitem);
103 
104         if (lvitem.lParam)
105             return ((LPPROCESS_PAGE_LIST_ITEM)lvitem.lParam)->ProcessId;
106     }
107 
108     return 0;
109 }
110 
111 void ProcessPageUpdate(void)
112 {
113     /* Enable or disable the "End Process" button */
114     if (ListView_GetSelectedCount(hProcessPageListCtrl))
115         EnableWindow(hProcessPageEndProcessButton, TRUE);
116     else
117         EnableWindow(hProcessPageEndProcessButton, FALSE);
118 }
119 
120 INT_PTR CALLBACK
121 ProcessPageWndProc(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
122 {
123     RECT    rc;
124     int     nXDifference;
125     int     nYDifference;
126     int     cx, cy;
127 
128     switch (message) {
129     case WM_INITDIALOG:
130         /*
131          * Save the width and height
132          */
133         GetClientRect(hDlg, &rc);
134         nProcessPageWidth = rc.right;
135         nProcessPageHeight = rc.bottom;
136 
137         /* Update window position */
138         SetWindowPos(hDlg, NULL, 15, 30, 0, 0, SWP_NOACTIVATE|SWP_NOOWNERZORDER|SWP_NOSIZE|SWP_NOZORDER);
139 
140         /*
141          * Get handles to the controls
142          */
143         hProcessPageListCtrl = GetDlgItem(hDlg, IDC_PROCESSLIST);
144         hProcessPageHeaderCtrl = ListView_GetHeader(hProcessPageListCtrl);
145         hProcessPageEndProcessButton = GetDlgItem(hDlg, IDC_ENDPROCESS);
146         hProcessPageShowAllProcessesButton = GetDlgItem(hDlg, IDC_SHOWALLPROCESSES);
147 
148         /*
149          * Set the title, and extended window styles for the list control
150          */
151         SetWindowTextW(hProcessPageListCtrl, L"Processes");
152         (void)ListView_SetExtendedListViewStyle(hProcessPageListCtrl, ListView_GetExtendedListViewStyle(hProcessPageListCtrl) | LVS_EX_FULLROWSELECT | LVS_EX_HEADERDRAGDROP);
153 
154         AddColumns();
155 
156         /*
157          * Subclass the process list control so we can intercept WM_ERASEBKGND
158          */
159         OldProcessListWndProc = (WNDPROC)SetWindowLongPtrW(hProcessPageListCtrl, GWLP_WNDPROC, (LONG_PTR)ProcessListWndProc);
160 
161 #ifdef RUN_PROC_PAGE
162         /* Start our refresh thread */
163         hProcessThread = CreateThread(NULL, 0, ProcessPageRefreshThread, NULL, 0, &dwProcessThread);
164 #endif
165 
166         /* Refresh page */
167         ProcessPageUpdate();
168 
169         return TRUE;
170 
171     case WM_DESTROY:
172         /* Close the event handle, this will make the */
173         /* refresh thread exit when the wait fails */
174 #ifdef RUN_PROC_PAGE
175         EndLocalThread(&hProcessThread, dwProcessThread);
176 #endif
177         SaveColumnSettings();
178         Cleanup();
179         break;
180 
181     case WM_COMMAND:
182         /* Handle the button clicks */
183         switch (LOWORD(wParam))
184         {
185                 case IDC_ENDPROCESS:
186                         ProcessPage_OnEndProcess();
187         }
188         break;
189 
190     case WM_SIZE:
191         if (wParam == SIZE_MINIMIZED)
192             return 0;
193 
194         cx = LOWORD(lParam);
195         cy = HIWORD(lParam);
196         nXDifference = cx - nProcessPageWidth;
197         nYDifference = cy - nProcessPageHeight;
198         nProcessPageWidth = cx;
199         nProcessPageHeight = cy;
200 
201         /* Reposition the application page's controls */
202         GetWindowRect(hProcessPageListCtrl, &rc);
203         cx = (rc.right - rc.left) + nXDifference;
204         cy = (rc.bottom - rc.top) + nYDifference;
205         SetWindowPos(hProcessPageListCtrl, NULL, 0, 0, cx, cy, SWP_NOACTIVATE|SWP_NOOWNERZORDER|SWP_NOMOVE|SWP_NOZORDER);
206         InvalidateRect(hProcessPageListCtrl, NULL, TRUE);
207 
208         GetClientRect(hProcessPageEndProcessButton, &rc);
209         MapWindowPoints(hProcessPageEndProcessButton, hDlg, (LPPOINT)(PRECT)(&rc), sizeof(RECT)/sizeof(POINT));
210            cx = rc.left + nXDifference;
211         cy = rc.top + nYDifference;
212         SetWindowPos(hProcessPageEndProcessButton, NULL, cx, cy, 0, 0, SWP_NOACTIVATE|SWP_NOOWNERZORDER|SWP_NOSIZE|SWP_NOZORDER);
213         InvalidateRect(hProcessPageEndProcessButton, NULL, TRUE);
214 
215         GetClientRect(hProcessPageShowAllProcessesButton, &rc);
216         MapWindowPoints(hProcessPageShowAllProcessesButton, hDlg, (LPPOINT)(PRECT)(&rc), sizeof(RECT)/sizeof(POINT));
217            cx = rc.left;
218         cy = rc.top + nYDifference;
219         SetWindowPos(hProcessPageShowAllProcessesButton, NULL, cx, cy, 0, 0, SWP_NOACTIVATE|SWP_NOOWNERZORDER|SWP_NOSIZE|SWP_NOZORDER);
220         InvalidateRect(hProcessPageShowAllProcessesButton, NULL, TRUE);
221         break;
222 
223     case WM_NOTIFY:
224         ProcessPageOnNotify(wParam, lParam);
225         break;
226 
227     case WM_KEYDOWN:
228         if (wParam == VK_DELETE)
229             ProcessPage_OnEndProcess();
230         break;
231     }
232 
233     return 0;
234 }
235 
236 void ProcessPageOnNotify(WPARAM wParam, LPARAM lParam)
237 {
238     LPNMHDR        pnmh;
239     NMLVDISPINFO*  pnmdi;
240     LPNMHEADER     pnmhdr;
241     ULONG          Index;
242     ULONG          ColumnIndex;
243     LPPROCESS_PAGE_LIST_ITEM  pData;
244 
245     pnmh = (LPNMHDR) lParam;
246     pnmdi = (NMLVDISPINFO*) lParam;
247     pnmhdr = (LPNMHEADER) lParam;
248 
249     if (pnmh->hwndFrom == hProcessPageListCtrl)
250     {
251         switch (pnmh->code)
252         {
253         case LVN_ITEMCHANGED:
254             ProcessPageUpdate();
255             break;
256 
257         case LVN_GETDISPINFO:
258 
259             if (!(pnmdi->item.mask & LVIF_TEXT))
260                 break;
261 
262             pData = (LPPROCESS_PAGE_LIST_ITEM)pnmdi->item.lParam;
263             Index = PerfDataGetProcessIndex(pData->ProcessId);
264             ColumnIndex = pnmdi->item.iSubItem;
265 
266             PerfDataGetText(Index, ColumnIndex, pnmdi->item.pszText, (ULONG)pnmdi->item.cchTextMax);
267 
268             break;
269 
270         case NM_RCLICK:
271 
272             ProcessPageShowContextMenu(GetSelectedProcessId());
273             break;
274 
275         case LVN_KEYDOWN:
276 
277             if (((LPNMLVKEYDOWN)lParam)->wVKey == VK_DELETE)
278                 ProcessPage_OnEndProcess();
279             break;
280 
281         }
282     }
283     else if (pnmh->hwndFrom == hProcessPageHeaderCtrl)
284     {
285         switch (pnmh->code)
286         {
287         case HDN_ITEMCLICK:
288 
289             TaskManagerSettings.SortColumn = ColumnDataHints[pnmhdr->iItem];
290             TaskManagerSettings.SortAscending = !TaskManagerSettings.SortAscending;
291             (void)ListView_SortItems(hProcessPageListCtrl, ProcessPageCompareFunc, NULL);
292 
293             break;
294 
295         case HDN_ITEMCHANGED:
296 
297             UpdateColumnDataHints();
298 
299             break;
300 
301         case HDN_ENDDRAG:
302 
303             UpdateColumnDataHints();
304 
305             break;
306 
307         }
308     }
309 }
310 
311 /*
312  * Adapted from SH_FormatInteger in dll/win32/shell32/dialogs/filedefext.cpp.
313  */
314 UINT
315 SH_FormatInteger(
316     _In_ LONGLONG Num,
317     _Out_writes_z_(cchResultMax) LPWSTR pwszResult,
318     _In_ UINT cchResultMax)
319 {
320     NUMBERFMTW nf;
321     INT i;
322     INT cchGrouping, cchResult;
323     WCHAR wszNumber[24];
324     WCHAR wszDecimalSep[8], wszThousandSep[8];
325     WCHAR wszGrouping[12];
326 
327     /* Print the number in uniform mode */
328     StringCchPrintfW(wszNumber, _countof(wszNumber), L"%I64u", Num);
329 
330     /* Get system strings for decimal and thousand separators */
331     GetLocaleInfoW(LOCALE_USER_DEFAULT, LOCALE_SDECIMAL, wszDecimalSep, _countof(wszDecimalSep));
332     GetLocaleInfoW(LOCALE_USER_DEFAULT, LOCALE_STHOUSAND, wszThousandSep, _countof(wszThousandSep));
333 
334     /* Initialize format for printing the number in bytes */
335     ZeroMemory(&nf, sizeof(nf));
336     nf.lpDecimalSep = wszDecimalSep;
337     nf.lpThousandSep = wszThousandSep;
338 
339     /* Get system string for groups separator */
340     cchGrouping = GetLocaleInfoW(LOCALE_USER_DEFAULT,
341                                  LOCALE_SGROUPING,
342                                  wszGrouping,
343                                  _countof(wszGrouping));
344 
345     /* Convert grouping specs from string to integer */
346     for (i = 0; i < cchGrouping; i++)
347     {
348         WCHAR wch = wszGrouping[i];
349 
350         if (wch >= L'0' && wch <= L'9')
351             nf.Grouping = nf.Grouping * 10 + (wch - L'0');
352         else if (wch != L';')
353             break;
354     }
355 
356     if ((nf.Grouping % 10) == 0)
357         nf.Grouping /= 10;
358     else
359         nf.Grouping *= 10;
360 
361     /* Format the number */
362     cchResult = GetNumberFormatW(LOCALE_USER_DEFAULT,
363                                  0,
364                                  wszNumber,
365                                  &nf,
366                                  pwszResult,
367                                  cchResultMax);
368     if (!cchResult)
369         return 0;
370 
371     /* GetNumberFormatW returns number of characters including UNICODE_NULL */
372     return cchResult - 1;
373 }
374 
375 void ProcessPageShowContextMenu(DWORD dwProcessId)
376 {
377     HMENU        hMenu;
378     HMENU        hSubMenu;
379     HMENU        hPriorityMenu;
380     POINT        pt;
381     SYSTEM_INFO  si;
382     HANDLE       hProcess;
383     DWORD        dwProcessPriorityClass;
384     WCHAR        strDebugger[260];
385     DWORD        dwDebuggerSize;
386     HKEY         hKey;
387 
388     if (dwProcessId == 0)
389         return;
390 
391     memset(&si, 0, sizeof(SYSTEM_INFO));
392 
393     GetCursorPos(&pt);
394     GetSystemInfo(&si);
395 
396     hMenu = LoadMenuW(hInst, MAKEINTRESOURCEW(IDR_PROCESS_PAGE_CONTEXT));
397     hSubMenu = GetSubMenu(hMenu, 0);
398     hPriorityMenu = GetSubMenu(hSubMenu, 4);
399 
400     hProcess = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, dwProcessId);
401     dwProcessPriorityClass = GetPriorityClass(hProcess);
402     CloseHandle(hProcess);
403 
404     if (si.dwNumberOfProcessors < 2)
405         RemoveMenu(hSubMenu, ID_PROCESS_PAGE_SETAFFINITY, MF_BYCOMMAND);
406 
407     switch (dwProcessPriorityClass)    {
408     case REALTIME_PRIORITY_CLASS:
409         CheckMenuRadioItem(hPriorityMenu, ID_PROCESS_PAGE_SETPRIORITY_REALTIME, ID_PROCESS_PAGE_SETPRIORITY_LOW, ID_PROCESS_PAGE_SETPRIORITY_REALTIME, MF_BYCOMMAND);
410         break;
411     case HIGH_PRIORITY_CLASS:
412         CheckMenuRadioItem(hPriorityMenu, ID_PROCESS_PAGE_SETPRIORITY_REALTIME, ID_PROCESS_PAGE_SETPRIORITY_LOW, ID_PROCESS_PAGE_SETPRIORITY_HIGH, MF_BYCOMMAND);
413         break;
414     case ABOVE_NORMAL_PRIORITY_CLASS:
415         CheckMenuRadioItem(hPriorityMenu, ID_PROCESS_PAGE_SETPRIORITY_REALTIME, ID_PROCESS_PAGE_SETPRIORITY_LOW, ID_PROCESS_PAGE_SETPRIORITY_ABOVENORMAL, MF_BYCOMMAND);
416         break;
417     case NORMAL_PRIORITY_CLASS:
418         CheckMenuRadioItem(hPriorityMenu, ID_PROCESS_PAGE_SETPRIORITY_REALTIME, ID_PROCESS_PAGE_SETPRIORITY_LOW, ID_PROCESS_PAGE_SETPRIORITY_NORMAL, MF_BYCOMMAND);
419         break;
420     case BELOW_NORMAL_PRIORITY_CLASS:
421         CheckMenuRadioItem(hPriorityMenu, ID_PROCESS_PAGE_SETPRIORITY_REALTIME, ID_PROCESS_PAGE_SETPRIORITY_LOW, ID_PROCESS_PAGE_SETPRIORITY_BELOWNORMAL, MF_BYCOMMAND);
422         break;
423     case IDLE_PRIORITY_CLASS:
424         CheckMenuRadioItem(hPriorityMenu, ID_PROCESS_PAGE_SETPRIORITY_REALTIME, ID_PROCESS_PAGE_SETPRIORITY_LOW, ID_PROCESS_PAGE_SETPRIORITY_LOW, MF_BYCOMMAND);
425         break;
426     }
427 
428     if (RegOpenKeyExW(HKEY_LOCAL_MACHINE, L"Software\\Microsoft\\Windows NT\\CurrentVersion\\AeDebug", 0, KEY_READ, &hKey) == ERROR_SUCCESS)
429     {
430         dwDebuggerSize = sizeof(strDebugger);
431         if (RegQueryValueExW(hKey, L"Debugger", NULL, NULL, (LPBYTE)strDebugger, &dwDebuggerSize) == ERROR_SUCCESS)
432         {
433             CharUpper(strDebugger);
434             if (wcsstr(strDebugger, L"DRWTSN32"))
435                 EnableMenuItem(hSubMenu, ID_PROCESS_PAGE_DEBUG, MF_BYCOMMAND|MF_DISABLED|MF_GRAYED);
436         }
437         else
438             EnableMenuItem(hSubMenu, ID_PROCESS_PAGE_DEBUG, MF_BYCOMMAND|MF_DISABLED|MF_GRAYED);
439 
440         RegCloseKey(hKey);
441     } else {
442         EnableMenuItem(hSubMenu, ID_PROCESS_PAGE_DEBUG, MF_BYCOMMAND|MF_DISABLED|MF_GRAYED);
443     }
444     TrackPopupMenu(hSubMenu, TPM_LEFTALIGN|TPM_TOPALIGN|TPM_LEFTBUTTON, pt.x, pt.y, 0, hMainWnd, NULL);
445     DestroyMenu(hMenu);
446 }
447 
448 void RefreshProcessPage(void)
449 {
450 #ifdef RUN_PROC_PAGE
451     /* Signal the event so that our refresh thread */
452     /* will wake up and refresh the process page */
453     PostThreadMessage(dwProcessThread, WM_TIMER, 0, 0);
454 #endif
455 }
456 
457 DWORD WINAPI ProcessPageRefreshThread(void *lpParameter)
458 {
459     MSG      msg;
460 
461     while (1) {
462         /*  Wait for an the event or application close */
463         if (GetMessage(&msg, NULL, 0, 0) <= 0)
464             return 0;
465 
466         if (msg.message == WM_TIMER) {
467 
468             UpdateProcesses();
469 
470             if (IsWindowVisible(hProcessPage))
471                 InvalidateRect(hProcessPageListCtrl, NULL, FALSE);
472 
473             ProcessPageUpdate();
474         }
475     }
476     return 0;
477 }
478 
479 void UpdateProcesses()
480 {
481     int i;
482     ULONG l;
483     LV_ITEM item;
484     LPPROCESS_PAGE_LIST_ITEM pData;
485 
486     SendMessage(hProcessPageListCtrl, WM_SETREDRAW, FALSE, 0);
487 
488     /* Remove old processes */
489     for (i = 0; i < ListView_GetItemCount(hProcessPageListCtrl); i++)
490     {
491         memset(&item, 0, sizeof (LV_ITEM));
492         item.mask = LVIF_PARAM;
493         item.iItem = i;
494         (void)ListView_GetItem(hProcessPageListCtrl, &item);
495         pData = (LPPROCESS_PAGE_LIST_ITEM)item.lParam;
496         if (!ProcessRunning(pData->ProcessId))
497         {
498             (void)ListView_DeleteItem(hProcessPageListCtrl, i);
499             HeapFree(GetProcessHeap(), 0, pData);
500         }
501     }
502 
503     /* Check for difference in listview process and performance process counts */
504     if (ListView_GetItemCount(hProcessPageListCtrl) != PerfDataGetProcessCount())
505     {
506         /* Add new processes by checking against the current items */
507         for (l = 0; l < PerfDataGetProcessCount(); l++)
508         {
509             AddProcess(l);
510         }
511     }
512 
513     if (TaskManagerSettings.SortColumn != -1)
514     {
515         (void)ListView_SortItems(hProcessPageListCtrl, ProcessPageCompareFunc, NULL);
516     }
517 
518     SendMessage(hProcessPageListCtrl, WM_SETREDRAW, TRUE, 0);
519 
520     /* Select first item if any */
521     if ((ListView_GetNextItem(hProcessPageListCtrl, -1, LVNI_FOCUSED | LVNI_SELECTED) == -1) &&
522         (ListView_GetItemCount(hProcessPageListCtrl) > 0) && !bProcessPageSelectionMade)
523     {
524         ListView_SetItemState(hProcessPageListCtrl, 0, LVIS_FOCUSED | LVIS_SELECTED, LVIS_FOCUSED | LVIS_SELECTED);
525         bProcessPageSelectionMade = TRUE;
526     }
527     /*
528     else
529     {
530         bProcessPageSelectionMade = FALSE;
531     }
532     */
533 }
534 
535 BOOL ProcessRunning(ULONG ProcessId)
536 {
537     HANDLE hProcess;
538     DWORD exitCode;
539 
540     if (ProcessId == 0) {
541         return TRUE;
542     }
543 
544     hProcess = OpenProcess(PROCESS_ALL_ACCESS, FALSE, ProcessId);
545     if (hProcess == NULL) {
546         return FALSE;
547     }
548 
549     if (GetExitCodeProcess(hProcess, &exitCode)) {
550         CloseHandle(hProcess);
551         return (exitCode == STILL_ACTIVE);
552     }
553 
554     CloseHandle(hProcess);
555     return FALSE;
556 }
557 
558 void AddProcess(ULONG Index)
559 {
560     LPPROCESS_PAGE_LIST_ITEM pData;
561     int         i;
562     LV_ITEM     item;
563     BOOL    bAlreadyInList = FALSE;
564     ULONG pid;
565 
566     pid = PerfDataGetProcessId(Index);
567 
568     /* Check to see if it's already in our list */
569     for (i=0; i<ListView_GetItemCount(hProcessPageListCtrl); i++)
570     {
571         memset(&item, 0, sizeof(LV_ITEM));
572         item.mask = LVIF_PARAM;
573         item.iItem = i;
574         (void)ListView_GetItem(hProcessPageListCtrl, &item);
575         pData = (LPPROCESS_PAGE_LIST_ITEM)item.lParam;
576         if (pData->ProcessId == pid)
577         {
578             bAlreadyInList = TRUE;
579             break;
580         }
581     }
582     if (!bAlreadyInList)  /* Add */
583     {
584         pData = (LPPROCESS_PAGE_LIST_ITEM)HeapAlloc(GetProcessHeap(), 0, sizeof(PROCESS_PAGE_LIST_ITEM));
585         pData->ProcessId = pid;
586 
587         /* Add the item to the list */
588         memset(&item, 0, sizeof(LV_ITEM));
589         item.mask = LVIF_TEXT|LVIF_PARAM;
590         item.pszText = LPSTR_TEXTCALLBACK;
591         item.iItem = ListView_GetItemCount(hProcessPageListCtrl);
592         item.lParam = (LPARAM)pData;
593         (void)ListView_InsertItem(hProcessPageListCtrl, &item);
594     }
595 }
596 
597 BOOL PerfDataGetText(ULONG Index, ULONG ColumnIndex, LPTSTR lpText, ULONG nMaxCount)
598 {
599     IO_COUNTERS iocounters;
600 
601     switch (ColumnDataHints[ColumnIndex])
602     {
603         case COLUMN_IMAGENAME:
604             PerfDataGetImageName(Index, lpText, nMaxCount);
605             return TRUE;
606 
607         case COLUMN_PID:
608             StringCchPrintfW(lpText, nMaxCount, L"%lu", PerfDataGetProcessId(Index));
609             return TRUE;
610 
611         case COLUMN_USERNAME:
612             PerfDataGetUserName(Index, lpText, nMaxCount);
613             return TRUE;
614 
615         case COLUMN_COMMANDLINE:
616             PerfDataGetCommandLine(Index, lpText, nMaxCount);
617             return TRUE;
618 
619         case COLUMN_SESSIONID:
620             StringCchPrintfW(lpText, nMaxCount, L"%lu", PerfDataGetSessionId(Index));
621             return TRUE;
622 
623         case COLUMN_CPUUSAGE:
624             StringCchPrintfW(lpText, nMaxCount, L"%02lu", PerfDataGetCPUUsage(Index));
625             return TRUE;
626 
627         case COLUMN_CPUTIME:
628         {
629             LARGE_INTEGER time;
630             DWORD dwHours;
631             DWORD dwMinutes;
632             DWORD dwSeconds;
633 
634             time = PerfDataGetCPUTime(Index);
635             gethmsfromlargeint(time, &dwHours, &dwMinutes, &dwSeconds);
636             StringCchPrintfW(lpText, nMaxCount, L"%lu:%02lu:%02lu", dwHours, dwMinutes, dwSeconds);
637             return TRUE;
638         }
639 
640         case COLUMN_MEMORYUSAGE:
641             SH_FormatInteger(PerfDataGetWorkingSetSizeBytes(Index) / 1024, lpText, nMaxCount);
642             StringCchCatW(lpText, nMaxCount, L" K");
643             return TRUE;
644 
645         case COLUMN_PEAKMEMORYUSAGE:
646             SH_FormatInteger(PerfDataGetPeakWorkingSetSizeBytes(Index) / 1024, lpText, nMaxCount);
647             StringCchCatW(lpText, nMaxCount, L" K");
648             return TRUE;
649 
650         case COLUMN_MEMORYUSAGEDELTA:
651             SH_FormatInteger(PerfDataGetWorkingSetSizeDelta(Index) / 1024, lpText, nMaxCount);
652             StringCchCatW(lpText, nMaxCount, L" K");
653             return TRUE;
654 
655         case COLUMN_PAGEFAULTS:
656             SH_FormatInteger(PerfDataGetPageFaultCount(Index), lpText, nMaxCount);
657             return TRUE;
658 
659         case COLUMN_PAGEFAULTSDELTA:
660             SH_FormatInteger(PerfDataGetPageFaultCountDelta(Index), lpText, nMaxCount);
661             return TRUE;
662 
663         case COLUMN_VIRTUALMEMORYSIZE:
664             SH_FormatInteger(PerfDataGetVirtualMemorySizeBytes(Index) / 1024, lpText, nMaxCount);
665             StringCchCatW(lpText, nMaxCount, L" K");
666             return TRUE;
667 
668         case COLUMN_PAGEDPOOL:
669             SH_FormatInteger(PerfDataGetPagedPoolUsagePages(Index) / 1024, lpText, nMaxCount);
670             StringCchCatW(lpText, nMaxCount, L" K");
671             return TRUE;
672 
673         case COLUMN_NONPAGEDPOOL:
674             SH_FormatInteger(PerfDataGetNonPagedPoolUsagePages(Index) / 1024, lpText, nMaxCount);
675             StringCchCatW(lpText, nMaxCount, L" K");
676             return TRUE;
677 
678         case COLUMN_BASEPRIORITY:
679             StringCchPrintfW(lpText, nMaxCount, L"%lu", PerfDataGetBasePriority(Index));
680             return TRUE;
681 
682         case COLUMN_HANDLECOUNT:
683             SH_FormatInteger(PerfDataGetHandleCount(Index), lpText, nMaxCount);
684             return TRUE;
685 
686         case COLUMN_THREADCOUNT:
687             SH_FormatInteger(PerfDataGetThreadCount(Index), lpText, nMaxCount);
688             return TRUE;
689 
690         case COLUMN_USEROBJECTS:
691             SH_FormatInteger(PerfDataGetUSERObjectCount(Index), lpText, nMaxCount);
692             return TRUE;
693 
694         case COLUMN_GDIOBJECTS:
695             SH_FormatInteger(PerfDataGetGDIObjectCount(Index), lpText, nMaxCount);
696             return TRUE;
697 
698         case COLUMN_IOREADS:
699             PerfDataGetIOCounters(Index, &iocounters);
700             SH_FormatInteger(iocounters.ReadOperationCount, lpText, nMaxCount);
701             return TRUE;
702 
703         case COLUMN_IOWRITES:
704             PerfDataGetIOCounters(Index, &iocounters);
705             SH_FormatInteger(iocounters.WriteOperationCount, lpText, nMaxCount);
706             return TRUE;
707 
708         case COLUMN_IOOTHER:
709             PerfDataGetIOCounters(Index, &iocounters);
710             SH_FormatInteger(iocounters.OtherOperationCount, lpText, nMaxCount);
711             return TRUE;
712 
713         case COLUMN_IOREADBYTES:
714             PerfDataGetIOCounters(Index, &iocounters);
715             SH_FormatInteger(iocounters.ReadTransferCount, lpText, nMaxCount);
716             return TRUE;
717 
718         case COLUMN_IOWRITEBYTES:
719             PerfDataGetIOCounters(Index, &iocounters);
720             SH_FormatInteger(iocounters.WriteTransferCount, lpText, nMaxCount);
721             return TRUE;
722 
723         case COLUMN_IOOTHERBYTES:
724             PerfDataGetIOCounters(Index, &iocounters);
725             SH_FormatInteger(iocounters.OtherTransferCount, lpText, nMaxCount);
726             return TRUE;
727     }
728 
729     return FALSE;
730 }
731 
732 
733 void gethmsfromlargeint(LARGE_INTEGER largeint, DWORD *dwHours, DWORD *dwMinutes, DWORD *dwSeconds)
734 {
735 #ifdef _MSC_VER
736     *dwHours = (DWORD)(largeint.QuadPart / 36000000000L);
737     *dwMinutes = (DWORD)((largeint.QuadPart % 36000000000L) / 600000000L);
738     *dwSeconds = (DWORD)(((largeint.QuadPart % 36000000000L) % 600000000L) / 10000000L);
739 #else
740     *dwHours = (DWORD)(largeint.QuadPart / 36000000000LL);
741     *dwMinutes = (DWORD)((largeint.QuadPart % 36000000000LL) / 600000000LL);
742     *dwSeconds = (DWORD)(((largeint.QuadPart % 36000000000LL) % 600000000LL) / 10000000LL);
743 #endif
744 }
745 
746 int largeintcmp(LARGE_INTEGER l1, LARGE_INTEGER l2)
747 {
748     int ret = 0;
749     DWORD dwHours1;
750     DWORD dwMinutes1;
751     DWORD dwSeconds1;
752     DWORD dwHours2;
753     DWORD dwMinutes2;
754     DWORD dwSeconds2;
755 
756     gethmsfromlargeint(l1, &dwHours1, &dwMinutes1, &dwSeconds1);
757     gethmsfromlargeint(l2, &dwHours2, &dwMinutes2, &dwSeconds2);
758     ret = CMP(dwHours1, dwHours2);
759     if (ret == 0)
760     {
761         ret = CMP(dwMinutes1, dwMinutes2);
762         if (ret == 0)
763         {
764             ret = CMP(dwSeconds1, dwSeconds2);
765         }
766     }
767     return ret;
768 }
769 
770 int CALLBACK ProcessPageCompareFunc(LPARAM lParam1, LPARAM lParam2, LPARAM lParamSort)
771 {
772     int ret = 0;
773     LPPROCESS_PAGE_LIST_ITEM Param1;
774     LPPROCESS_PAGE_LIST_ITEM Param2;
775     ULONG IndexParam1;
776     ULONG IndexParam2;
777     WCHAR text1[260];
778     WCHAR text2[260];
779     ULONG l1;
780     ULONG l2;
781     LARGE_INTEGER  time1;
782     LARGE_INTEGER  time2;
783     IO_COUNTERS    iocounters1;
784     IO_COUNTERS    iocounters2;
785     ULONGLONG      ull1;
786     ULONGLONG      ull2;
787 
788     if (TaskManagerSettings.SortAscending) {
789         Param1 = (LPPROCESS_PAGE_LIST_ITEM)lParam1;
790         Param2 = (LPPROCESS_PAGE_LIST_ITEM)lParam2;
791     } else {
792         Param1 = (LPPROCESS_PAGE_LIST_ITEM)lParam2;
793         Param2 = (LPPROCESS_PAGE_LIST_ITEM)lParam1;
794     }
795     IndexParam1 = PerfDataGetProcessIndex(Param1->ProcessId);
796     IndexParam2 = PerfDataGetProcessIndex(Param2->ProcessId);
797 
798     if (TaskManagerSettings.SortColumn == COLUMN_IMAGENAME)
799     {
800         PerfDataGetImageName(IndexParam1, text1, _countof(text1));
801         PerfDataGetImageName(IndexParam2, text2, _countof(text2));
802         ret = _wcsicmp(text1, text2);
803     }
804     else if (TaskManagerSettings.SortColumn == COLUMN_PID)
805     {
806         l1 = Param1->ProcessId;
807         l2 = Param2->ProcessId;
808         ret = CMP(l1, l2);
809     }
810     else if (TaskManagerSettings.SortColumn == COLUMN_USERNAME)
811     {
812         PerfDataGetUserName(IndexParam1, text1, _countof(text1));
813         PerfDataGetUserName(IndexParam2, text2, _countof(text2));
814         ret = _wcsicmp(text1, text2);
815     }
816     else if (TaskManagerSettings.SortColumn == COLUMN_COMMANDLINE)
817     {
818         PerfDataGetCommandLine(IndexParam1, text1, _countof(text1));
819         PerfDataGetCommandLine(IndexParam2, text2, _countof(text2));
820         ret = _wcsicmp(text1, text2);
821     }
822     else if (TaskManagerSettings.SortColumn == COLUMN_SESSIONID)
823     {
824         l1 = PerfDataGetSessionId(IndexParam1);
825         l2 = PerfDataGetSessionId(IndexParam2);
826         ret = CMP(l1, l2);
827     }
828     else if (TaskManagerSettings.SortColumn == COLUMN_CPUUSAGE)
829     {
830         l1 = PerfDataGetCPUUsage(IndexParam1);
831         l2 = PerfDataGetCPUUsage(IndexParam2);
832         ret = CMP(l1, l2);
833     }
834     else if (TaskManagerSettings.SortColumn == COLUMN_CPUTIME)
835     {
836         time1 = PerfDataGetCPUTime(IndexParam1);
837         time2 = PerfDataGetCPUTime(IndexParam2);
838         ret = largeintcmp(time1, time2);
839     }
840     else if (TaskManagerSettings.SortColumn == COLUMN_MEMORYUSAGE)
841     {
842         l1 = PerfDataGetWorkingSetSizeBytes(IndexParam1);
843         l2 = PerfDataGetWorkingSetSizeBytes(IndexParam2);
844         ret = CMP(l1, l2);
845     }
846     else if (TaskManagerSettings.SortColumn == COLUMN_PEAKMEMORYUSAGE)
847     {
848         l1 = PerfDataGetPeakWorkingSetSizeBytes(IndexParam1);
849         l2 = PerfDataGetPeakWorkingSetSizeBytes(IndexParam2);
850         ret = CMP(l1, l2);
851     }
852     else if (TaskManagerSettings.SortColumn == COLUMN_MEMORYUSAGEDELTA)
853     {
854         l1 = PerfDataGetWorkingSetSizeDelta(IndexParam1);
855         l2 = PerfDataGetWorkingSetSizeDelta(IndexParam2);
856         ret = CMP(l1, l2);
857     }
858     else if (TaskManagerSettings.SortColumn == COLUMN_PAGEFAULTS)
859     {
860         l1 = PerfDataGetPageFaultCount(IndexParam1);
861         l2 = PerfDataGetPageFaultCount(IndexParam2);
862         ret = CMP(l1, l2);
863     }
864     else if (TaskManagerSettings.SortColumn == COLUMN_PAGEFAULTSDELTA)
865     {
866         l1 = PerfDataGetPageFaultCountDelta(IndexParam1);
867         l2 = PerfDataGetPageFaultCountDelta(IndexParam2);
868         ret = CMP(l1, l2);
869     }
870     else if (TaskManagerSettings.SortColumn == COLUMN_VIRTUALMEMORYSIZE)
871     {
872         l1 = PerfDataGetVirtualMemorySizeBytes(IndexParam1);
873         l2 = PerfDataGetVirtualMemorySizeBytes(IndexParam2);
874         ret = CMP(l1, l2);
875     }
876     else if (TaskManagerSettings.SortColumn == COLUMN_PAGEDPOOL)
877     {
878         l1 = PerfDataGetPagedPoolUsagePages(IndexParam1);
879         l2 = PerfDataGetPagedPoolUsagePages(IndexParam2);
880         ret = CMP(l1, l2);
881     }
882     else if (TaskManagerSettings.SortColumn == COLUMN_NONPAGEDPOOL)
883     {
884         l1 = PerfDataGetNonPagedPoolUsagePages(IndexParam1);
885         l2 = PerfDataGetNonPagedPoolUsagePages(IndexParam2);
886         ret = CMP(l1, l2);
887     }
888     else if (TaskManagerSettings.SortColumn == COLUMN_BASEPRIORITY)
889     {
890         l1 = PerfDataGetBasePriority(IndexParam1);
891         l2 = PerfDataGetBasePriority(IndexParam2);
892         ret = CMP(l1, l2);
893     }
894     else if (TaskManagerSettings.SortColumn == COLUMN_HANDLECOUNT)
895     {
896         l1 = PerfDataGetHandleCount(IndexParam1);
897         l2 = PerfDataGetHandleCount(IndexParam2);
898         ret = CMP(l1, l2);
899     }
900     else if (TaskManagerSettings.SortColumn == COLUMN_THREADCOUNT)
901     {
902         l1 = PerfDataGetThreadCount(IndexParam1);
903         l2 = PerfDataGetThreadCount(IndexParam2);
904         ret = CMP(l1, l2);
905     }
906     else if (TaskManagerSettings.SortColumn == COLUMN_USEROBJECTS)
907     {
908         l1 = PerfDataGetUSERObjectCount(IndexParam1);
909         l2 = PerfDataGetUSERObjectCount(IndexParam2);
910         ret = CMP(l1, l2);
911     }
912     else if (TaskManagerSettings.SortColumn == COLUMN_GDIOBJECTS)
913     {
914         l1 = PerfDataGetGDIObjectCount(IndexParam1);
915         l2 = PerfDataGetGDIObjectCount(IndexParam2);
916         ret = CMP(l1, l2);
917     }
918     else if (TaskManagerSettings.SortColumn == COLUMN_IOREADS)
919     {
920         PerfDataGetIOCounters(IndexParam1, &iocounters1);
921         PerfDataGetIOCounters(IndexParam2, &iocounters2);
922         ull1 = iocounters1.ReadOperationCount;
923         ull2 = iocounters2.ReadOperationCount;
924         ret = CMP(ull1, ull2);
925     }
926     else if (TaskManagerSettings.SortColumn == COLUMN_IOWRITES)
927     {
928         PerfDataGetIOCounters(IndexParam1, &iocounters1);
929         PerfDataGetIOCounters(IndexParam2, &iocounters2);
930         ull1 = iocounters1.WriteOperationCount;
931         ull2 = iocounters2.WriteOperationCount;
932         ret = CMP(ull1, ull2);
933     }
934     else if (TaskManagerSettings.SortColumn == COLUMN_IOOTHER)
935     {
936         PerfDataGetIOCounters(IndexParam1, &iocounters1);
937         PerfDataGetIOCounters(IndexParam2, &iocounters2);
938         ull1 = iocounters1.OtherOperationCount;
939         ull2 = iocounters2.OtherOperationCount;
940         ret = CMP(ull1, ull2);
941     }
942     else if (TaskManagerSettings.SortColumn == COLUMN_IOREADBYTES)
943     {
944         PerfDataGetIOCounters(IndexParam1, &iocounters1);
945         PerfDataGetIOCounters(IndexParam2, &iocounters2);
946         ull1 = iocounters1.ReadTransferCount;
947         ull2 = iocounters2.ReadTransferCount;
948         ret = CMP(ull1, ull2);
949     }
950     else if (TaskManagerSettings.SortColumn == COLUMN_IOWRITEBYTES)
951     {
952         PerfDataGetIOCounters(IndexParam1, &iocounters1);
953         PerfDataGetIOCounters(IndexParam2, &iocounters2);
954         ull1 = iocounters1.WriteTransferCount;
955         ull2 = iocounters2.WriteTransferCount;
956         ret = CMP(ull1, ull2);
957     }
958     else if (TaskManagerSettings.SortColumn == COLUMN_IOOTHERBYTES)
959     {
960         PerfDataGetIOCounters(IndexParam1, &iocounters1);
961         PerfDataGetIOCounters(IndexParam2, &iocounters2);
962         ull1 = iocounters1.OtherTransferCount;
963         ull2 = iocounters2.OtherTransferCount;
964         ret = CMP(ull1, ull2);
965     }
966     return ret;
967 }
968 
969 /**
970  * @brief
971  * Maps an NT "\Device\..." path to its Win32 "DOS" equivalent.
972  *
973  * @param[in]   lpDevicePath
974  * The NT device path to convert.
975  *
976  * @param[out]  lpDosPath
977  * Receives the converted Win32 path.
978  *
979  * @param[in]   dwLength
980  * Size of the lpDosPath buffer in characters.
981  *
982  * @return
983  * The number of characters required (if lpDosPath == NULL or dwLength == 0),
984  * or actually written in the lpDosPath buffer, including the NULL terminator.
985  * Returns 0 in case of failure.
986  **/
987 static DWORD
988 DevicePathToDosPath(
989     _In_ LPCWSTR lpDevicePath,
990     _Out_writes_to_opt_(dwLength, return)
991          LPWSTR lpDosPath,
992     _In_opt_ DWORD dwLength)
993 {
994     DWORD dwRet = 0;
995     WCHAR szDrive[3] = L"?:";
996     WCHAR szDeviceName[MAX_PATH];
997 
998     /* Check if lpDevicePath is a device path */
999     if (_wcsnicmp(lpDevicePath, L"\\Device\\", CONST_STR_LEN(L"\\Device\\")) != 0)
1000     {
1001         return 0;
1002     }
1003 
1004     for (szDrive[0] = L'A'; szDrive[0] <= L'`'; szDrive[0]++)
1005     {
1006         if (QueryDosDeviceW(szDrive, szDeviceName, _countof(szDeviceName)) != 0)
1007         {
1008             size_t len = wcslen(szDeviceName);
1009 
1010             if (_wcsnicmp(lpDevicePath, szDeviceName, len) == 0)
1011             {
1012                 /* Get the required length, including the NULL terminator */
1013                 dwRet = _countof(szDrive) + wcslen(lpDevicePath + len);
1014 
1015                 if (lpDosPath && (dwLength >= dwRet))
1016                 {
1017                     StringCchPrintfW(lpDosPath, dwLength, L"%s%s",
1018                                      szDrive, lpDevicePath + len);
1019                 }
1020 
1021                 break;
1022             }
1023         }
1024     }
1025 
1026     return dwRet;
1027 }
1028 
1029 /**
1030  * @brief
1031  * Retrieves the Win32 path of an executable image, by handle.
1032  *
1033  * @param[in]   hProcess
1034  * Handle to the executable image; it should be opened with
1035  * PROCESS_QUERY_INFORMATION access rights.
1036  *
1037  * @param[out]  lpExePath
1038  * Receives the Win32 image path.
1039  *
1040  * @param[in]   dwLength
1041  * Size of the lpExePath buffer in characters.
1042  *
1043  * @return
1044  * The number of characters required (if lpExePath == NULL or dwLength == 0),
1045  * or actually written in the lpExePath buffer, including the NULL terminator.
1046  * Returns 0 in case of failure.
1047  **/
1048 static DWORD
1049 GetProcessExecutablePath(
1050     _In_ HANDLE hProcess,
1051     _Out_writes_to_opt_(dwLength, return)
1052          LPWSTR lpExePath,
1053     _In_opt_ DWORD dwLength)
1054 {
1055     DWORD dwRet = 0;
1056     NTSTATUS Status;
1057     BYTE StaticBuffer[sizeof(UNICODE_STRING) + (MAX_PATH * sizeof(WCHAR))];
1058     PVOID DynamicBuffer = NULL;
1059     PUNICODE_STRING ExePath;
1060     ULONG SizeNeeded;
1061 
1062     Status = NtQueryInformationProcess(hProcess,
1063                                        ProcessImageFileName,
1064                                        StaticBuffer,
1065                                        /* Reserve a NULL terminator */
1066                                        sizeof(StaticBuffer) - sizeof(WCHAR),
1067                                        &SizeNeeded);
1068     if (NT_SUCCESS(Status))
1069     {
1070         ExePath = (PUNICODE_STRING)StaticBuffer;
1071     }
1072     else if (Status == STATUS_INFO_LENGTH_MISMATCH)
1073     {
1074         /* Allocate the buffer, reserving space for a NULL terminator */
1075         DynamicBuffer = HeapAlloc(GetProcessHeap(), 0, SizeNeeded + sizeof(WCHAR));
1076         if (!DynamicBuffer)
1077             return 0;
1078 
1079         Status = NtQueryInformationProcess(hProcess,
1080                                            ProcessImageFileName,
1081                                            DynamicBuffer,
1082                                            SizeNeeded,
1083                                            &SizeNeeded);
1084         if (!NT_SUCCESS(Status))
1085             goto Cleanup;
1086 
1087         ExePath = DynamicBuffer;
1088     }
1089     else
1090     {
1091         return 0;
1092     }
1093 
1094     /* Manually NULL-terminate */
1095     ExePath->Buffer[ExePath->Length / sizeof(WCHAR)] = UNICODE_NULL;
1096 
1097     /* HACK: Convert device path format into Win32 path format.
1098      * Use ProcessImageFileNameWin32 instead if the kernel supports it. */
1099     dwRet = DevicePathToDosPath(ExePath->Buffer, lpExePath, dwLength);
1100 
1101 Cleanup:
1102     HeapFree(GetProcessHeap(), 0, DynamicBuffer);
1103 
1104     return dwRet;
1105 }
1106 
1107 /**
1108  * @brief
1109  * Retrieves the Win32 path of an executable image, by identifier.
1110  *
1111  * @param[in]   dwProcessId
1112  * Identifier of the running executable image.
1113  *
1114  * @param[out]  lpExePath
1115  * Receives the Win32 image path.
1116  *
1117  * @param[in]   dwLength
1118  * Size of the lpExePath buffer in characters.
1119  *
1120  * @return
1121  * The number of characters required (if lpExePath == NULL or dwLength == 0),
1122  * or actually written in the lpExePath buffer, including the NULL terminator.
1123  * Returns 0 in case of failure.
1124  **/
1125 static DWORD
1126 GetProcessExecutablePathById(
1127     _In_ DWORD dwProcessId,
1128     _Out_writes_to_opt_(dwLength, return)
1129          LPWSTR lpExePath,
1130     _In_opt_ DWORD dwLength)
1131 {
1132     DWORD dwRet = 0;
1133 
1134     if (dwProcessId == 0)
1135         return 0;
1136 
1137     /* PID = 4 ("System") */
1138     if (dwProcessId == 4)
1139     {
1140         static const WCHAR szKernelExe[] = L"\\ntoskrnl.exe";
1141         LPWSTR pszSystemDir;
1142         UINT uLength;
1143 
1144         uLength = GetSystemDirectoryW(NULL, 0);
1145         if (uLength == 0)
1146             return 0;
1147 
1148         pszSystemDir = HeapAlloc(GetProcessHeap(), 0, uLength * sizeof(WCHAR));
1149         if (!pszSystemDir)
1150             return 0;
1151 
1152         if (GetSystemDirectoryW(pszSystemDir, uLength) != 0)
1153         {
1154             /* Get the required length, including the NULL terminator */
1155             dwRet = uLength + CONST_STR_LEN(szKernelExe);
1156 
1157             if (lpExePath && (dwLength >= dwRet))
1158             {
1159                 StringCchPrintfW(lpExePath, dwLength, L"%s%s",
1160                                  pszSystemDir, szKernelExe);
1161             }
1162         }
1163 
1164         HeapFree(GetProcessHeap(), 0, pszSystemDir);
1165     }
1166     else
1167     {
1168         HANDLE hProcess;
1169 
1170         hProcess = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, dwProcessId);
1171         if (hProcess)
1172         {
1173             dwRet = GetProcessExecutablePath(hProcess, lpExePath, dwLength);
1174             CloseHandle(hProcess);
1175         }
1176     }
1177 
1178     return dwRet;
1179 }
1180 
1181 void ProcessPage_OnProperties(void)
1182 {
1183     DWORD dwProcessId;
1184     DWORD dwLength;
1185     LPWSTR pszExePath;
1186     SHELLEXECUTEINFOW info = { 0 };
1187 
1188     dwProcessId = GetSelectedProcessId();
1189 
1190     /* Retrieve the image path length */
1191     dwLength = GetProcessExecutablePathById(dwProcessId, NULL, 0);
1192     if (dwLength == 0)
1193         return;
1194 
1195     /* Allocate and retrieve the image path */
1196     pszExePath = HeapAlloc(GetProcessHeap(), 0, dwLength * sizeof(WCHAR));
1197     if (!pszExePath)
1198         return;
1199 
1200     if (GetProcessExecutablePathById(dwProcessId, pszExePath, dwLength) == 0)
1201         goto Cleanup;
1202 
1203     /* Call the shell to display the file properties */
1204     info.cbSize = sizeof(SHELLEXECUTEINFOW);
1205     info.fMask = SEE_MASK_INVOKEIDLIST;
1206     info.hwnd = NULL;
1207     info.lpVerb = L"properties";
1208     info.lpFile = pszExePath;
1209     info.lpParameters = L"";
1210     info.lpDirectory = NULL;
1211     info.nShow = SW_SHOW;
1212     info.hInstApp = NULL;
1213 
1214     ShellExecuteExW(&info);
1215 
1216 Cleanup:
1217     HeapFree(GetProcessHeap(), 0, pszExePath);
1218 }
1219 
1220 void ProcessPage_OnOpenFileLocation(void)
1221 {
1222     DWORD dwProcessId;
1223     DWORD dwLength;
1224     LPWSTR pszExePath;
1225     static const WCHAR szCmdFormat[] = L"/select,\"%s\"";
1226     LPWSTR pszCmdLine = NULL;
1227 
1228     dwProcessId = GetSelectedProcessId();
1229 
1230     /* Retrieve the image path length */
1231     dwLength = GetProcessExecutablePathById(dwProcessId, NULL, 0);
1232     if (dwLength == 0)
1233         return;
1234 
1235     /* Allocate and retrieve the image path */
1236     pszExePath = HeapAlloc(GetProcessHeap(), 0, dwLength * sizeof(WCHAR));
1237     if (!pszExePath)
1238         return;
1239 
1240     if (GetProcessExecutablePathById(dwProcessId, pszExePath, dwLength) == 0)
1241         goto Cleanup;
1242 
1243     /* Build the shell command line */
1244     dwLength += CONST_STR_LEN(szCmdFormat) - CONST_STR_LEN(L"%s");
1245     pszCmdLine = HeapAlloc(GetProcessHeap(), 0, dwLength * sizeof(WCHAR));
1246     if (!pszCmdLine)
1247         goto Cleanup;
1248 
1249     StringCchPrintfW(pszCmdLine, dwLength, szCmdFormat, pszExePath);
1250 
1251     /* Call the shell to open the file location and select it. If Explorer shell
1252      * is not available, use ReactOS's alternative file browser instead. */
1253     ShellExecuteW(NULL, L"open",
1254                   GetShellWindow() ? L"explorer.exe" : L"filebrowser.exe",
1255                   pszCmdLine, NULL, SW_SHOWNORMAL);
1256 
1257 Cleanup:
1258     HeapFree(GetProcessHeap(), 0, pszCmdLine);
1259     HeapFree(GetProcessHeap(), 0, pszExePath);
1260 }
1261