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Sweden-Number/programs/taskmgr/dbgchnl.c

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/*
* ReactOS Task Manager
*
* dbgchnl.c
*
* Copyright (C) 2003 - 2004 Eric Pouech
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#define WIN32_LEAN_AND_MEAN /* Exclude rarely-used stuff from Windows headers */
#include <windows.h>
#include <commctrl.h>
#include <stdlib.h>
#include <malloc.h>
#include <memory.h>
#include <tchar.h>
#include <stdio.h>
#include <winnt.h>
#include <dbghelp.h>
#include "taskmgr.h"
#include "perfdata.h"
#include "column.h"
#include <ctype.h>
/* TODO:
* - the dialog box could be non modal
* - in that case,
* + could refresh channels from time to time
* + set the name of exec (and perhaps its pid) in dialog title
* - get a better UI (replace the 'x' by real tick boxes in list view)
* - enhance visual feedback: the list is large, and it's hard to get the
* right line when clicking on rightmost column (trace for example)
* - get rid of printfs (error reporting) and use real message boxes
* - include the column width settings in the full column management scheme
* - use more global settings (like having a temporary on/off
* setting for a fixme:s or err:s
*/
static BOOL (WINAPI *pSymInitialize)(HANDLE, PSTR, BOOL);
static DWORD (WINAPI *pSymLoadModule)(HANDLE, HANDLE, PSTR, PSTR, DWORD, DWORD);
static BOOL (WINAPI *pSymCleanup)(HANDLE);
static BOOL (WINAPI *pSymFromName)(HANDLE, LPSTR, PSYMBOL_INFO);
BOOL AreDebugChannelsSupported(void)
{
static HANDLE hDbgHelp /* = NULL */;
if (hDbgHelp) return TRUE;
if (!(hDbgHelp = LoadLibrary("dbghelp.dll"))) return FALSE;
pSymInitialize = (void*)GetProcAddress(hDbgHelp, "SymInitialize");
pSymLoadModule = (void*)GetProcAddress(hDbgHelp, "SymLoadModule");
pSymFromName = (void*)GetProcAddress(hDbgHelp, "SymFromName");
pSymCleanup = (void*)GetProcAddress(hDbgHelp, "SymCleanup");
if (!pSymInitialize || !pSymLoadModule || !pSymCleanup || !pSymFromName)
{
FreeLibrary(hDbgHelp);
hDbgHelp = NULL;
return FALSE;
}
return TRUE;
}
static DWORD get_selected_pid(void)
{
LVITEM lvitem;
ULONG Index;
DWORD dwProcessId;
for (Index = 0; Index < (ULONG)ListView_GetItemCount(hProcessPageListCtrl); Index++)
{
memset(&lvitem, 0, sizeof(LVITEM));
lvitem.mask = LVIF_STATE;
lvitem.stateMask = LVIS_SELECTED;
lvitem.iItem = Index;
ListView_GetItem(hProcessPageListCtrl, &lvitem);
if (lvitem.state & LVIS_SELECTED)
break;
}
dwProcessId = PerfDataGetProcessId(Index);
if ((ListView_GetSelectedCount(hProcessPageListCtrl) != 1) || (dwProcessId == 0))
return 0;
return dwProcessId;
}
static int list_channel_CB(HANDLE hProcess, void* addr, char* buffer, void* user)
{
int j;
char val[2];
LVITEMA lvi;
int index;
HWND hChannelLV = (HWND)user;
memset(&lvi, 0, sizeof(lvi));
lvi.mask = LVIF_TEXT;
lvi.pszText = buffer + 1;
index = ListView_InsertItem(hChannelLV, &lvi);
if (index == -1) return 0;
val[1] = '\0';
for (j = 0; j < 4; j++)
{
val[0] = (buffer[0] & (1 << j)) ? 'x' : ' ';
ListView_SetItemText(hChannelLV, index, j + 1, val);
}
return 1;
}
struct cce_user
{
const char* name; /* channel to look for */
unsigned value, mask; /* how to change channel */
unsigned done; /* number of successful changes */
unsigned notdone; /* number of unsuccessful changes */
};
/******************************************************************
* change_channel_CB
*
* Callback used for changing a given channel attributes
*/
static int change_channel_CB(HANDLE hProcess, void* addr, char* buffer, void* pmt)
{
struct cce_user* user = (struct cce_user*)pmt;
if (!user->name || !strcmp(buffer + 1, user->name))
{
buffer[0] = (buffer[0] & ~user->mask) | (user->value & user->mask);
if (WriteProcessMemory(hProcess, addr, buffer, 1, NULL))
user->done++;
else
user->notdone++;
}
return 1;
}
void* get_symbol(HANDLE hProcess, char* name, char* lib)
{
char buffer[sizeof(IMAGEHLP_SYMBOL) + 256];
SYMBOL_INFO* si = (SYMBOL_INFO*)buffer;
void* ret = NULL;
if (pSymInitialize(hProcess, NULL, FALSE))
{
si->SizeOfStruct = sizeof(*si);
si->MaxNameLen = sizeof(buffer) - sizeof(IMAGEHLP_SYMBOL);
if (pSymLoadModule(hProcess, NULL, lib, NULL, 0, 0) &&
pSymFromName(hProcess, name, si))
ret = (void*)si->Address;
pSymCleanup(hProcess);
}
return ret;
}
struct dll_option_layout
{
void* next;
void* prev;
char* const* channels;
int nb_channels;
};
typedef int (*EnumChannelCB)(HANDLE, void*, char*, void*);
/******************************************************************
* enum_channel
*
* Enumerates all known channels on process hProcess through callback
* ce.
*/
static int enum_channel(HANDLE hProcess, EnumChannelCB ce, void* user, unsigned unique)
{
struct dll_option_layout dol;
int i, j, ret = 1;
void* buf_addr;
unsigned char buffer[32];
void* addr;
const char** cache = NULL;
unsigned num_cache, used_cache;
if (!(addr = get_symbol(hProcess, "first_dll", "libwine.so"))) return -1;
if (unique)
cache = HeapAlloc(GetProcessHeap(), 0, (num_cache = 32) * sizeof(char*));
else
num_cache = 0;
used_cache = 0;
for (;
ret && addr && ReadProcessMemory(hProcess, addr, &dol, sizeof(dol), NULL);
addr = dol.next)
{
for (i = 0; i < dol.nb_channels; i++)
{
if (ReadProcessMemory(hProcess, (void*)(dol.channels + i), &buf_addr, sizeof(buf_addr), NULL) &&
ReadProcessMemory(hProcess, buf_addr, buffer, sizeof(buffer), NULL))
{
if (unique)
{
/* since some channels are defined in multiple compilation units,
* they will appear several times...
* so cache the channel's names we already reported and don't report
* them again
*/
for (j = 0; j < used_cache; j++)
if (!strcmp(cache[j], buffer + 1)) break;
if (j != used_cache) continue;
if (used_cache == num_cache)
cache = HeapReAlloc(GetProcessHeap(), 0, cache, (num_cache *= 2) * sizeof(char*));
cache[used_cache++] = strcpy(HeapAlloc(GetProcessHeap(), 0, strlen(buffer + 1) + 1),
buffer + 1);
}
ret = ce(hProcess, buf_addr, buffer, user);
}
}
}
if (unique)
{
for (j = 0; j < used_cache; j++) HeapFree(GetProcessHeap(), 0, (char*)cache[j]);
HeapFree(GetProcessHeap(), 0, cache);
}
return 0;
}
static void DebugChannels_FillList(HWND hChannelLV)
{
HANDLE hProcess;
ListView_DeleteAllItems(hChannelLV);
hProcess = OpenProcess(PROCESS_VM_OPERATION | PROCESS_VM_READ, FALSE, get_selected_pid());
if (!hProcess) return; /* FIXME messagebox */
SendMessage(hChannelLV, WM_SETREDRAW, FALSE, 0);
enum_channel(hProcess, list_channel_CB, (void*)hChannelLV, TRUE);
SendMessage(hChannelLV, WM_SETREDRAW, TRUE, 0);
CloseHandle(hProcess);
}
static void DebugChannels_OnCreate(HWND hwndDlg)
{
HWND hLV = GetDlgItem(hwndDlg, IDC_DEBUG_CHANNELS_LIST);
LVCOLUMN lvc;
lvc.mask = LVCF_FMT | LVCF_TEXT | LVCF_WIDTH;
lvc.fmt = LVCFMT_LEFT;
lvc.pszText = _T("Debug Channel");
lvc.cx = 100;
ListView_InsertColumn(hLV, 0, &lvc);
lvc.mask = LVCF_FMT | LVCF_TEXT | LVCF_WIDTH;
lvc.fmt = LVCFMT_CENTER;
lvc.pszText = _T("Fixme");
lvc.cx = 55;
ListView_InsertColumn(hLV, 1, &lvc);
lvc.mask = LVCF_FMT | LVCF_TEXT | LVCF_WIDTH;
lvc.fmt = LVCFMT_CENTER;
lvc.pszText = _T("Err");
lvc.cx = 55;
ListView_InsertColumn(hLV, 2, &lvc);
lvc.mask = LVCF_FMT | LVCF_TEXT | LVCF_WIDTH;
lvc.fmt = LVCFMT_CENTER;
lvc.pszText = _T("Warn");
lvc.cx = 55;
ListView_InsertColumn(hLV, 3, &lvc);
lvc.mask = LVCF_FMT | LVCF_TEXT | LVCF_WIDTH;
lvc.fmt = LVCFMT_CENTER;
lvc.pszText = _T("Trace");
lvc.cx = 55;
ListView_InsertColumn(hLV, 4, &lvc);
DebugChannels_FillList(hLV);
}
static void DebugChannels_OnNotify(HWND hDlg, LPARAM lParam)
{
NMHDR* nmh = (NMHDR*)lParam;
switch (nmh->code)
{
case NM_CLICK:
if (nmh->idFrom == IDC_DEBUG_CHANNELS_LIST)
{
LVHITTESTINFO lhti;
HWND hChannelLV;
HANDLE hProcess;
NMITEMACTIVATE* nmia = (NMITEMACTIVATE*)lParam;
hProcess = OpenProcess(PROCESS_VM_OPERATION | PROCESS_VM_READ | PROCESS_VM_WRITE, FALSE, get_selected_pid());
if (!hProcess) return; /* FIXME message box */
lhti.pt = nmia->ptAction;
hChannelLV = GetDlgItem(hDlg, IDC_DEBUG_CHANNELS_LIST);
SendMessage(hChannelLV, LVM_SUBITEMHITTEST, 0, (LPARAM)&lhti);
if (nmia->iSubItem >= 1 && nmia->iSubItem <= 4)
{
TCHAR val[2];
TCHAR name[32];
unsigned bitmask = 1 << (lhti.iSubItem - 1);
struct cce_user user;
ListView_GetItemText(hChannelLV, lhti.iItem, 0, name, sizeof(name) / sizeof(name[0]));
ListView_GetItemText(hChannelLV, lhti.iItem, lhti.iSubItem, val, sizeof(val) / sizeof(val[0]));
user.name = name;
user.value = (val[0] == 'x') ? 0 : bitmask;
user.mask = bitmask;
user.done = user.notdone = 0;
enum_channel(hProcess, change_channel_CB, &user, FALSE);
if (user.done)
{
val[0] ^= ('x' ^ ' ');
ListView_SetItemText(hChannelLV, lhti.iItem, lhti.iSubItem, val);
}
if (user.notdone)
printf("Some channel instance weren't correctly set\n");
}
CloseHandle(hProcess);
}
break;
}
}
static LRESULT CALLBACK DebugChannelsDlgProc(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
{
switch (message)
{
case WM_INITDIALOG:
DebugChannels_OnCreate(hDlg);
return TRUE;
case WM_COMMAND:
if (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL)
{
EndDialog(hDlg, LOWORD(wParam));
return TRUE;
}
break;
case WM_NOTIFY:
DebugChannels_OnNotify(hDlg, lParam);
break;
}
return FALSE;
}
void ProcessPage_OnDebugChannels(void)
{
DialogBox(hInst, (LPCTSTR)IDD_DEBUG_CHANNELS_DIALOG, hMainWnd, (DLGPROC)DebugChannelsDlgProc);
}
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